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CALIBRATION OR STANDARDIZATION METHODS

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250 - Radiant energy

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DocumentTitleDate
20130043380CALIBRATION OF MASS SPECTROMETRY SYSTEMS - A method for operating a mass spectrometer (MS) includes establishing a pressure differential across a membrane wherein an upstream pressure in a calibrant gas inlet line on an upstream side of the membrane is greater than a downstream pressure in an ion source on a downstream side of the membrane; flowing a calibrant gas from the calibrant gas inlet line, through a nano-scale orifice of the membrane, and into the ion source; and maintaining the upstream pressure at a constant value. The calibrant may be flowed at a low flow rate. An MS system includes a membrane interposed between a calibrant gas introduction system and a mass spectrometer. The membrane may include an orifice of nano-scale diameter.02-21-2013
20130043379NEUTRON MULTIPLICITY COUNTING - Each pulse of a pulse sequence received from a neutron detector is set as a trigger pulse triggering a predefined gate, the multiplicity of pulses within this gate is determined, the pulse having triggered the gate is assigned to a multiplicity category corresponding to this multiplicity of pulses and the trigger-to-predecessor distances from the trigger pulse to pulses preceding the trigger pulse within a certain range in the pulse sequence are determined. The range within which one looks for predecessor pulses of each trigger pulse exceeds the dead time of the neutron detector. For each multiplicity category, the number of trigger pulses assigned thereto is determined. For each multiplicity category, one builds, based upon the trigger-to-predecessor intervals determined, a distribution in time after an arbitrary preceding pulse of trigger pulses assigned to that specific multiplicity category. Based upon the multiplicity-specific distribution, one estimates, for each multiplicity category, the number of trigger pulses lost due to neutron detector dead time that would have been assigned to the multiplicity category. When the estimated number of lost trigger pulses is known, the number of trigger pulses assigned to each multiplicity category is accordingly corrected. As trigger pulses could have been assigned to a wrong multiplicity category due to missing pulses inside the triggered gates, the number of trigger pulses assigned to each multiplicity category may additionally be corrected for that using a similar technique.02-21-2013
20100006749CLOSED LOOP DAYLIGHT HARVESTING LIGHT CONTROL SYSTEM HAVING AUTO-CALIBRATION - An apparatus and method for enabling an automatic calibration sequence for a light control system having a daylight harvesting scheme is disclosed herein. An ambient light sensor connects to a detection circuit for detecting the amount of ambient light within a given zone. A microprocessor connects between the detection circuit and a dimming circuit for providing control to initiate dimming and to start the auto-calibration sequence. Responsive to the amount of ambient light detected, the dimming circuit controls the power supplied to a plurality of electrical loads. A storage unit connects to the microprocessor for storing minimum light levels assessed during the auto-calibration sequence wherein the ambient light levels are monitored for a predetermined amount of time to determine the lowest level of ambient light generated for the purpose of setting and storing a target voltage level associated with such.01-14-2010
20100072355ARC FLASH PROTECTION WITH SELF-TEST - An method for automatically testing an arc flash detection system by periodically or continually transmitting electro-optical (EO) radiation through one or more transmission cables electro-optically coupled to respective EO radiation collectors. A test EO signal may pass through the EO radiation collector to be received by an EO sensor. An attenuation of the EO signal may be determined by comparing the intensity of the transmitted EO signal to an intensity of the received EO signal. A self-test failure may be detected if the attenuation exceeds a threshold. EO signals may be transmitted according to a particular pattern (e.g., a coded signal) to allow an arc flash detection system to distinguish the test EO radiation from EO radiation indicative of an arc flash event.03-25-2010
20130075599UNIVERSAL MOUNTING SYSTEM FOR CALIBRATION SOURCE FOR USE IN PET SCANNERS - A universal mounting adapter is configured for interchangeably mounting a calibration source to two or more different imaging devices. The two imaging devices have different mounting brackets so they cannot be used with the same conventional calibration source. The present adapter includes mounting mechanisms for both types of bracket, allowing the attached calibration source to be moved from one imaging device to the other, while maintaining the calibration source in a prescribed geometry within the respective imaging device. This can be performed without the need for any tools.03-28-2013
20130075598Pulsed Mass Calibration in Time-of-Flight Mass Spectrometry - A method is provided for calibrating mass-to-charge ratio measurements obtained from a time-of-flight mass spectrometer used as a detector for a chromatographic system. The method can include introducing a calibrant material into the time-of-flight mass spectrometer after a sample is introduced to the chromatographic system, but before the analysis of the sample is complete, such that calibrant material and sample material are not present at the ion source of the mass spectrometer, contemporaneously. The method can include acquiring a multiplicity of mass spectra of the calibrant material during an analytical run, and in some embodiments, calculating a multiplicity of mass calibrations on the basis of mass spectra obtained from the calibrant material introduced during the analytical run.03-28-2013
20080258051Equipment and Process for Measuring the Precision of Sun Tracking for Photovoltaic Concentrators - Mechanical sun trackers which have optical systems on their surface for concentrating direct solar radiation and its subsequent conversion into electricity through thermal or photovoltaic processes require precision solar tracking, which has to be all the more precise the greater the concentration factor used. Thus the precision required in these systems is generally less than a degree, and frequently of the order of a tenth of a degree. In view of the large dimensions of the surfaces, or apertures, of these trackers, currently in the approximate range of 20-250 m10-23-2008
20110192966Radiographic imaging apparatus, method and program - At least one of conditions including that power is applied to a radiation detector, that a predetermined time period has elapsed from the application of power, and that the radiation detector is connected is detected. When at least one of the conditions is detected, determination is made as to whether or not calibration information of the currently used radiation detector is appropriate. If a negative determination is made, control is exerted to enable calibration.08-11-2011
20100148048SYSTEM FOR PROVIDING A CALIBRATION FOR A TESTING DEVICE USED TO EVALUATE ETHANOL PRODUCTION YIELD, AND ASSOCIATED METHOD - A system is provided to calibrate for a near infrared analytical testing device configured to screen for ethanol production yield of an ethanol-producing material. The system comprises a first analytical testing device configured collect a first and second signal associated with a characteristic parameter of a sample material, wherein the characteristic parameter is capable of enabling evaluation of ethanol production yield for plant material corresponding to the sample material. A drying unit is configured to drive the sample material to a substantially standard moisture level. A fermentation unit is configured to ferment the sample material. A second analytical testing device is configured to collect a reference measurement associated with the characteristic parameter. The reference measurement is capable of being correlated to the first and second signals for building a calibration model used to evaluate ethanol production yield of plant material corresponding in composition to the sample material. Associated methods are also provided.06-17-2010
20100116977MEASUREMENT AND ENDPOINTING OF SAMPLE THICKNESS - An improved method for TEM sample creation. The use of a SEM-STEM detector in the dual-beam FIB/SEM allows a sample to be thinned using the FIB, while the STEM signal is used to monitor sample thickness. A preferred embodiment of the present invention can measure the thickness of or create S/TEM samples by using a precise endpoint detection method that is reproducible and suitable for automation. Preferred embodiments also enable automatic endpointing during TEM lamella creation and provide users with direct feedback on sample thickness during manual thinning. Preferred embodiments of the present invention thus provide improved methods for endpointing sample thinning and methods to partially or fully automate endpointing to increase throughput and reproducibility of TEM sample creation.05-13-2010
20100072356SYSTEMS AND METHODS FOR REDUCING NOISE FROM MASS SPECTRA - Systems and methods for reducing background noise in a mass spectrum. The method includes the following steps of: (a) obtaining an original mass spectrum; (b) determining a noise mass spectrum corresponding to background noise in the original mass spectrum; and (c) determining a corrected mass spectrum by subtracting the noise mass spectrum from the original mass spectrum. Step (b) of the method may include the steps of: A) effecting a transformation of the original mass spectrum into the frequency domain to obtain an original frequency spectrum; B) identifying at least one dominant frequency in the original frequency spectrum; C) generating a noise frequency spectrum by selectively filtering for said dominant frequencies; and D) determining the noise mass spectrum by effecting a transformation of the noise frequency spectrum into the mass domain. Preferably for each correlated pair of original and noise intensity data points, the minimum value is determined and the noise mass spectrum is modified by making the noise intensity data point equal to the minimum value.03-25-2010
20100072354TRUE COINCIDENCE SUMMING CORRECTION AND TOTAL EFFICIENCY COMPUTATION FOR RADIONUCLIDE SPECTROSCOPY ANALYSIS - A method, system, and software for calculating the true coincidence summing effects for radionuclide spectroscopy analysis. A set of equations which can be implemented with a stored computer program performs calculations to correct the spectroscopic analysis data for gamma-gamma coincidence events, gamma-X-ray coincidence events, as well as gamma-annihilation photon coincidence events. The net gamma-ray, KX-ray and annihilation photon summing-out probabilities for the analytic gamma-ray is the total summing-out probability from all gamma-ray summing-out chains subtracted by the total summing-out probability from all gamma-ray sub-cascade chains involving the analytic gamma-ray. A total efficiency calculation is performed to eliminate the need for using radioactive sources to create summing specific calibration measurements and for increased accuracy.03-25-2010
20130032707CHARGED PARTICLE BEAM DRAWING APPARATUS AND ELECTRICAL CHARGING EFFECT CORRECTION METHOD THEREOF - A charged particle beam drawing apparatus calculates a pattern area density distribution by using a central processing unit, calculates a dose distribution by using the central processing unit, calculates an irradiation amount distribution by using the central processing unit, performs a convolution calculation of the irradiation amount distribution and a fogging charged particle distribution by using a high speed processing unit, a processing speed of the high speed processing unit being higher than a processing speed of the central processing unit, calculates an irradiation time by using the central processing unit, calculates an elapsed time by using the central processing unit, calculates an electrical charging amount distribution by using the central processing unit, and performs a convolution calculation of the electrical charging amount distribution and a position deviation response function by using the high speed processing unit.02-07-2013
20130032706Optical Simulation-Based Time-Of-Flight Compensation and PET System Configuration - A method of configuring a time-of-flight positron emission tomography (PET) system includes determining a set of parameters of a detector of the PET system. Each parameter is configured to affect photon travel within the detector. The method further includes simulating operation of the detector to generate a photon detection timing data profile for a plurality of depth of interaction (DOI) positions within the detector via a simulation model of the detector configured in accordance with the set of parameters, and determining a time-of-flight correction factor for each DOI position of the plurality of DOI positions based on the simulated operation. The correction factor is indicative of a time offset of the photon detection timing data profile.02-07-2013
20120205530FLUENCE MONITORING DEVICES WITH SCINTILLATING FIBERS FOR X-RAY RADIOTHERAPY TREATMENT AND METHODS FOR CALIBRATION AND VALIDATION OF SAME - According to one aspect, a fluence monitoring detector for use with a multileaf collimator on a radiotherapy machine having an x-ray radiation source. The fluence monitoring detector includes a plurality of scintillating optical fibers, each scintillating optical fiber configured to generate a light output at each end thereof in response to incident radiation pattern thereon from the radiation source and multileaf collimator, a plurality of collection optical fibers coupled to the opposing ends of the scintillating optical fibers and operable to collect the light output coming from both ends of each scintillating optical fiber, and a photo-detector coupled to the collection optical fibers and operable to converts optical energy transmitted by the collection optical fibers to electric signals for determining actual radiation pattern information.08-16-2012
20100102215METHOD FOR IDENTIFYING 3-D LOCATION OF GAMMA INTERACTION AND FLAT PANEL GAMMA IMAGING HEAD APPARATUS USING THE SAME - The present invention provides a method for identifying a 3-D event location of a gamma interaction for enhancing the precision of event location determination and improving the practicability of an edge-on ends-read imaging detector. The method establishes two expected photopeak relations and a mapping table for every unit in the sensor array before imaging. In real practice, two sensing values with respect to the energy of scintillation photons generated during the detection on an event are obtained by the edge-on ends-read imaging detector. Furthermore, two energy windows corresponding to each sensing value are determined according to the corresponding expected photopeak relations. If both the two sensing values fall within the corresponding energy windows respectively, the event location along the long axis of sensor array is determined according to the sensor values with respect to the mapping table mentioned above.04-29-2010
20100096540Fibre Optic Dosimeter - A dosimeter for radiation fields is described. The dosimeter includes a scintillator a light pipe having a first end in optical communication with the scintillator and a light detector. The light pipe may have a hollow core with a light reflective material about the periphery of the hollow core. The dosimeter may further include a light source that generates light for use as a calibrating signal for a measurement signal and/or for use to check the light pipe.04-22-2010
20130026353Conical Water-Equivalent Phantom Design for Beam Hardening Correction in Preclinical Micro-CT - Apparatuses, methods, and computer-readable mediums are provided that utilize a phantom to correct attenuation due to beam hardening. The phantom includes a calibration tip attached to a proximal end of a portion. The portion has a diameter that increases incrementally from the proximal end of the portion towards a distal end of the portion (e.g., a substantially conical shape, a substantially convex shape, a substantially concave shape, or a series of adjacent steps). In another embodiment, a method is provided in which the phantom is scanned and an image of the phantom is reconstructed. Thereafter, an x-ray path length and estimated attenuation coefficient are calculated. A sum of expected coefficients are also calculated. The calculations are used to generate an algorithm for beam hardening coefficients.01-31-2013
20100108873METHOD AND ASSEMBLY FOR OPTICAL REPRODUCTION WITH DEPTH DISCRIMINATION - The invention relates to a method and an assembly for generating optical section images. The invention permits the three-dimensional, layered optical scanning of spatially extended objects and is used in microscopy, but is not limited to this field. In said method, illumination patterns with periodicity in at least one direction are projected into a Plane and the light from the sample which is reflected and/or scattered and/or emitted fluorescence light is being imaged onto a spatially resolving detector. According to the invention, initially there is a calibration step, in which the local phase and/or the local period of the illumination patterns are determined for each location on the detector. In the sample detection mode, for the calculation of each optical section image there are two illumination patterns projected into or onto the sample and the resulting intensity distributions are used to form an image on the detector. The steps of the procedure to project and detect the two illumination steps can be repeated as required, especially at different focal settings of the sample and/or different exposure wavelengths, where at least one optical section image is calculated from the recorded intensity distributions with the aid of the local phase and/or local period.05-06-2010
20100065729DEVICE FOR DETECTING INFRARED RADIATION COMPRISING A RESISTIVE IMAGING BOLOMETER, A SYSTEM COMPRISING AN ARRAY OF SUCH BOLOMETERS AND A METHOD FOR READING AN IMAGING BOLOMETER INTEGRATED INTO SUCH A SYSTEM - A device for detecting infrared radiation including a resistive imaging bolometer, a mechanism for measuring drift in the electrical resistance of the bolometer relative to a reference value of the electrical resistance of the bolometer which corresponds to predetermined operating conditions of the bolometer, and a mechanism for correcting the effects of the drift in resistance or for correcting the drift itself.03-18-2010
20130087697POSITRON EMISSION TOMOGRAPHY METHOD AND DEVICE WITH APPLICATION ADAPTABILITY - A positron emission tomography method and a device with application adaptability. The method includes: 1. scanning a tested object initially for obtaining initial activity information of the tested object; 2. programming and adjusting a detector module based on the result of the initial scan so as to obtain a new system structure, and rapidly calibrating the new system structure; 3. performing a scan with the new system structure for obtaining activity information of the tested object; 4. analyzing the activity information of the tested object obtained at step 3. If quality of the activity information can satisfy requirements of the application, the scan is finished; otherwise programming and adjusting the detector module is repeated, rapid calibration is performed, and the activity information of the tested object is obtained again with the new system structure until the activity information satisfies requirements of the application. The device includes a detector module (04-11-2013
20090114804System and Methods for Improving Signal/Noise Ratio for Signal Detectors - A method and system for characterizing and quantifying various error and calibration components of signals associated with photo-detectors. By varying the detector operational parameters such as input light intensity and integration times, measured signals can be analyzed to separate out and quantify various components of the measured signals. The various components thus determined may be categorized according to their dependencies on the operational parameters. Such component characterization allows better understanding of the detector system and ways in which such system can be improved so as to yield an improved measurement result for which the detector is being utilized.05-07-2009
20090302206OPTICAL REFERENCE, AND A METHOD OF USING SAME - A detector calibration reference is disposed along a path of travel for radiation that extends from a radiation source to a radiation detector. The detector calibration reference has mutually exclusive first and second portions that are offset in a direction transverse to the path of travel, the first portion being substantially opaque to radiation from the source, and the second portion being substantially transmissive to radiation from the source. The detector calibration reference is moved relative to the path of travel in a manner so that the first and second portions become successively aligned with the path of travel.12-10-2009
20120217386ORGANIC-SCINTILLATOR COMPTON GAMMA RAY TELESCOPE - Apparatus and methods for imaging sources of gamma rays with a large area, comparatively low-cost Compton telescope (08-30-2012
20120217385DEVICE FOR USE IN NORMALIZING READINGS ON A TESTING MACHINE - An example optic module verification device for use in periodic normalization of a testing machine used to test samples in wells is disclosed. The example testing machine includes a plurality of photon counters that each count photons emitted from different wells. The example verification device includes a plurality of verification wells located so as to each be associated with one of the photon counters when used in the testing machine. The example device also includes a photon emitter in each verification well, each photon emitter including a C08-30-2012
20130056625BLACKBODY CALIBRATION STANDARD FOR SUBMILLIMETER FREQUENCY RANGE - Blackbody calibration standard including a main absorber and a secondary absorber, wherein the main absorber is comprised in a cavity and the secondary absorber is comprised in a cavity and the secondary absorber is arranged such that it surrounds the cavity comprising the main absorber.03-07-2013
20080296484ION IMPLANTATION SYSTEM AND METHOD OF MONITORING IMPLANT ENERGY OF AN ION IMPLANTATION DEVICE - An ion implantation system and method of monitoring implant energy of an ion implantation device. The ion implantation system includes an ion implantation device and a monitoring device. The ion implantation device generates a plurality of charged particles and accelerates them with an accelerating voltage for ion implantation. The monitoring device performs spectroscopic analysis of the charged particles to obtain the real accelerating voltage. Thus, implant energy output by the ion implantation device can be calibrated.12-04-2008
20110012014SPECTRAL DETECTOR CALIBRATION - A method includes detecting radiation that traverses a material having a known spectral characteristic with a radiation sensitive detector pixel that outputs a signal indicative of the detected radiation and determining a mapping between the output signal and the spectral characteristic. The method further includes determining an energy of a photon detected by the radiation sensitive detector pixel based on a corresponding output of the radiation sensitive detector pixel and the mapping.01-20-2011
20110012013Methods of Calibrating and Operating an Ion Trap Mass Analyzer to Optimize Mass Spectral Peak Characteristics - A method for calibrating an ion trap mass spectrometer is disclosed. The method includes establishing an optimal phase and amplitude-m/z relationship by acquiring peak quality data at varying values of amplitude and phase. The resonant ejection voltage applied to the electrodes of the ion trap may then be controlled during analytical scans in accordance with the established relationship between m/z and resonant ejection voltage amplitude.01-20-2011
20110012012METHOD FOR LINEARIZING AN ENERGY SPECTRUM OF RADIATION DETECTORS - A method for linearizing a radiation detector is provided, the method including measuring a pulse height spectrum of a predetermined radiation source, identifying at least one spectrum template for the predetermined radiation source, and determining a linearization function by comparing the measured pulse height spectrum with the at least one identified spectrum template. The at least one spectrum template is a predefined synthesized energy spectrum for the predetermined radiation source and for the corresponding radiation detector. Further, a detector for measuring one or more types of radiation is provided, the detector being adapted for transforming the measured pulse height spectrum in an energy-calibrated spectrum, the transformation including a linearization step, where a linearization function used with the linearization step is determined according to the inventive method.01-20-2011
20090236511Method for evaluating an image dataset acquired by a radiation-based image acquisition device - The invention relates to a method for evaluating an image dataset obtained by a radiation-based image acquisition device. A scatter background dataset is determined as a function of the image data. The image dataset is corrected pixel by pixel by multiplying the image dataset with the inverse of a function dependent on the quotient of the scatter background data and the image data at a respective pixel. The function is a nonlinear, smooth function determined by a coefficient and having positive derivatives. The absolute value of the function is one for the value zero. The image acquisition parameter dependent coefficient is determined by an optimization process.09-24-2009
20090236510SCINTILLATING FIBER DOSIMETER ARRAY - A radiation dosimetry apparatus and method use a scintillating optical fiber array for detecting dose levels. The scintillating optical fiber detectors generate optical energy in response to a predetermined type of radiation, and are coupled to collection optical fibers that transmit the optical energy to a photo-detector for conversion to an electrical signal. The detectors may be embedded in one or more modular, water-equivalent phantom slabs. A repeatable connector couples the collection fibers to the photo-detector, maintaining the fiber ends in a predetermined spatial relationship. The detector fibers may be distributed as desired in a three-dimensional detection space, and may be oriented with their longitudinal axes at different orientations relative to a transmission axis of an incident radiation beam. A calibration method uses two measurements in two spectral windows, one with irradiation of the scintillator at a known dose and one with only irradiation of the collection fiber.09-24-2009
20130068939WATER PHANTOM AND MEASUREMENT SYSTEM - A measurement system for use in radiation therapy, for example for measuring radiation sources, in particular for a water phantom. The water phantom has a water container and a measurement system, on which at least one holder for a radiation detector is arranged. The holder can be moved within the water container along at least one movement axis, with a control unit being present, which accepts and executes commands for controlling the movement axis. A virtual coordinate system which is aligned to the water surface is defined so that the movement device does not have to be aligned with great complexity. A conversion unit transfers control commands from the virtual coordinate system into the real coordinate system of the movement device so movements of the holder are always parallel and/or perpendicular to the water surface.03-21-2013
20130068938METHOD FOR EFFICIENT DAILY CONSTANCY CHECK OR CALIBRATION OF PROTON THERAPY SYSTEM - Systems and methods are provided for efficiently performing daily maintenance or quality assurance on proton therapy systems. Specifically, a system is provided which includes a solid-state phantom, a plurality of ionization chambers disposed within the solid-state phantom, and a measuring device coupled to the plurality of ionization chambers and operable to perform radiation measurements of proton beams received within the plurality of ionization chambers. Measurements of proton beams received in the ionization chambers may be used to derive the dose at the ionization chambers and be subsequently compared to pre-generated target data (e.g., data corresponding to proper treatment according to a radiation therapy treatment plan). If the data obtained through the maintenance procedure does not conform to the target data, the proton beam generator may be further calibrated.03-21-2013
20130214144METHOD FOR HOMOGENIZATION OF THE THRESHOLD VALUES OF A MULTI-CHANNEL, QUANTA-COUNTING RADIATION DETECTOR - A method is disclosed for homogenization of threshold values of a multichannel, quanta-counting radiation detector. In an embodiment of the method empty measurements are carried out with the detector at different spectral compositions of the radiation with different settings of threshold values of the comparators. For each channel of which the comparators is to be set to the same energy threshold, an adapted threshold value is determined for this energy threshold from the empty measurement, at which a variation of the normalized count rate of the channel is minimized over the different spectral compositions of the radiation. This avoids problems in the further processing of the measurement data of the detector, which can occur during alterations of the spectrum.08-22-2013
20100038528High-Resolution Ion Chamber - Nested ionization chambers provide independent measurements of a radiation beam that does not fully irradiate the volume of one or both chambers. By mathematically combining these independent measurements, partial volume effects caused by a change in ionization detector calibrations when the full detector volume is not irradiated by the radiation beam, may be decreased, providing more accurate measurement of extremely small radiation beams.02-18-2010
20090020691Rotation Device for Radiation Source - A Positron Emission Tomography (PET) scanner may have a PET gantry, a calibration radiation source arranged rotatable in the PET gantry, and a drive mechanism coupled with the calibration radiation source, wherein the drive mechanism is formed by non ferromagnetic materials.01-22-2009
20090008541THERMAL INFRARED SIGNAGE METHOD WITH APPLICATION TO INFRARED WEAPON SIGHT CALIBRATION - A method of creating signage visible by infrared cameras and infrared weapon sights is provided. Particular application is made to the calibration of infrared weapon sights. An improved calibration target and method is developed.01-08-2009
20120235029TESTING AN INFRARED PROXIMITY SENSOR - A system for testing an IR proximity sensor has an infrared reflector that receives radiation transmitted from the proximity sensor under test. An electronically modulated IR-transmissive device is positioned between the sensor and the reflector. A tester is coupled to control the IR-transmissive device for testing the sensor. Other embodiments are also described and claimed.09-20-2012
20110278444Radiation Beam Analyzer And Method - A radiation beam analyzer for measuring the distribution and intensity of radiation produced by a Cyberknife®. The analyzer employs a relative small tank of water into which a sensor is placed to maintain a constant SAD (source to axis distance). A first method maintains a fixed position of detector, and raises or lowers the small tank of water. A second method moves the detector up, down or rotationally synchronously in opposite directions with respect to the small tank of water to keep the SAD constant. These methods position the detector relative to the radiation source to simulate the location of a malady within a patient's body. An embodiment of the present invention enables measurements of substantially larger fields. This is accomplished by rotating a tank of water 90 degrees from a first position to a second position11-17-2011
20110278443METHOD OF COLLECTING CALIBRATION DATA IN RADIATION TOMOGRAPHY APPARATUS - This invention has one object to provide a method of collecting calibration data in radiation tomography apparatus that allows reliable collection of calibration data with a wide detector ring. In order to achieve this purpose, in the method of collecting calibration data in radiation tomography apparatus according to this invention, the number of coincidence events is obtained while the phantom that emits annihilation gamma-ray pairs moves as to pass through an inner hole of the detector ring. Such configuration dose not need the phantom having a width equal or larger than the detector ring, and may realize reliable collection of calibration data. Moreover, it may be considered that annihilation gamma-ray pairs have been emitted in uniform property without depending on positions of the detector ring. As a result, calibration data that is more suitable for removal of a image artifact may be obtained.11-17-2011
20100224770METHOD FOR CONFIGURING AN ION MOBILITY SPECTROMETER SYSTEM - This invention relates to a method of configuring an ion mobility spectrometer system, particularly for detecting a target analyte. The method involves using quantum chemical techniques to estimate the K09-09-2010
20090194676NUCLEAR GAUGES AND METHODS OF CONFIGURATION AND CALIBRATION OF NUCLEAR GAUGES - Nuclear gauges and method of configuration and methods of calibrations of the nuclear gauges are provided. The nuclear gauges are used in measuring the density and/or moisture of construction-related materials. The nuclear gauge can include a gauge housing having a vertical cavity therethrough and at least one radiation detector located within the housing. The nuclear gauge can include a vertically moveable source rod and a radiation source operatively positioned within a distal end of the source rod.08-06-2009
20080315079Symbia Head Position Correction: Apparatus and Method - A system and method provide for more accurate SPECT/CT image registration. CT data is utilized to establish a global spatial coordinate system of a common test phantom. The common test phantom is then used to obtain a set of point source nuclear images. Three-dimensional CT point source data is mapped to a two-dimensional image plane of corresponding point source data, to obtain a pair of intersecting projection cones that are used to obtain a set of detector head position correction parameters to correct detector head positioning in the CT coordinate system when obtaining SPECT projection images of the same object.12-25-2008
20080251709Pmt Gain and Energy Calibrations Using Lutetium Background Radiation - A scintillator (10-16-2008
20110127414METHOD FOR CALIBRATING A SENSOR SYSTEM - The invention relates to a method for the calibration of a sensor system.06-02-2011
20100243877SCINTILLATOR BASED RADIATION DETECTION - Methods and related systems are described for the detection of nuclear radiation. The system can include a tool body adapted to be deployed in a wellbore and a scintillator material that intrinsically generates radiation. The scintillator material is mounted within the tool body. A photodetection system is coupled to the scintillator material, and mounted within the tool body. Features in a spectrum associated with a scintillation material's intrinsic radioactive decay are used for the determination of one or more parameter's of the response function of the radiation detector system.09-30-2010
20100171031CALIBRATION OF LITHOGRAPHIC PROCESS MODELS - A method is provided for calibrating a model of a lithographic process that includes defining a parameter space of lithographic model parameters that are expected in an integrated circuit layout. The parameter space is defined according to bin values of a lithographic model parameter that span the range from a predetermined minimum and maximum value of the model parameter. The bin values may be incremented uniformly between the maximum and minimum parameter values, or may be distributed according to a weighting. The lithographic model is calibrated to an initial calibration test pattern. The resulting simulated calibration pattern is evaluated to determine whether the model parameter space is adequately populated. If the parameter space is over or under populated, the calibration pattern is modified until the calibration pattern test values adequately populate the parameter space, so that the final calibrated lithographic process model will more reliably predict images over the full range of image parameters.07-08-2010
20090127449METHODS AND APPARATUS FOR PERFORMANCE VERIFICATION AND STABILIZATION OF RADIATION DETECTION DEVICES - The rare earth metal Lutetium in compound form is used in check sources of various shapes and sizes to calibrate and tune radiation detection devices. Radioactive Lutetium-176, a naturally occurring (non man-made) isotope forming part of the Lutetium compound, produces gamma energies of approximately 90, 200, and 300 kilo-electron Volts which are used in the calibration. Such gamma energies are close to the predominant spectral lines of special nuclear materials such as U-235 and Pu-239, which is to be monitored by radiation detection devices. Lutetium in a radioactive calibration source (which is either integrated into the radiation detection device or positioned close to it during calibration) provides benefits including that no reactor or accelerator is required during production or use, for the creation of man-made radioactivity, no dangerous radiation exposure occurs and (because of the long half-life of Lu-176) the radioactive calibration source essentially never needs to be replaced. Moreover, the handling of such a source is much less restrictive and costly than that of a conventional man-made radioactive isotope.05-21-2009
20110284730LIGHT SENSOR KNOB - A system may include a housing, a light sensor, and a knob protruding from the housing and configured to rotate between angular positions about an axis. The knob may be configured to receive light from directions generally perpendicular to the axis, and the light sensor may be arranged to receive the light received by the knob. A method may include installing a light level control device having a light sensor, and adjusting the field of view of the light sensor by rotating a knob on the light level control device. The light sensor may be arranged to receive light from different angles in a plane substantially perpendicular to the axis of the knob.11-24-2011
20100264302Method and device for calibrating an irradiation device - The present invention relates to a method and a device for calibrating an irradiation device of an apparatus for generatively manufacturing a three-dimensional object. The calibration includes steps of arranging an image converter plate (10-21-2010
20090289181Device for Measuring Absorbed Dose in an Ionizing Radiation Field and Use of the Device - The present invention concerns an arrangement for the measurement of absorbed dose at a given distance from a radioactive source. The arrangement comprises a detector body (11-26-2009
20110006195APPARATUS AND METHOD FOR DETECTING HIGH-ENGERY RADIATION - A high-energy radiation detector apparatus, comprising a high-energy radiation detector substrate and a plurality of charge collection electrodes operatively coupled to first and second opposing sides of the detector substrate is disclosed. Charge collection circuitry is associated with the plurality of charge collection electrodes for collecting charge induced on the charge collection electrodes by a high energy radiation photon interaction event caused by high-energy radiation incident on the detector substrate.01-13-2011
20090250602SINGLE-USE EXTERNAL DOSIMETERS FOR USE IN RADIATION THERAPIES - Methods, systems, devices, and computer program products include positioning single-use radiation sensor patches that have adhesive means onto the skin of a patient to evaluate the radiation dose delivered during a treatment session. The sensor patches are configured to be minimally obtrusive and operate without the use of externally extending power cords or lead wires.10-08-2009
20100032557SPECULAR ARRAY FOR RADIOMETRIC CALIBRATION AND METHOD - A specular array for radiometric calibration (SPARC) includes a plurality of spherical mirrors disposed upon a uniform background as at least one array of reflective points, at least two points reflecting a different intensity of directly incident sunlight. Each mirror has a radius of curvature and a diameter, the radius of curvature and the diameter providing a field of regard, the collective mirrors providing a collective minimum calibratability field of regard. Based upon the radius of curvature, the transmittance value of the sun to each mirror and from each mirror to a sensor being calibrated, the intensity of calibration light provided to the input aperture of a sensor to be calibrated within the collective minimum calibratability field of regard may be determined and used as a baseline for sensor calibration. An associated method of combined spatial and radiometric calibration is also provided.02-11-2010
20090189062Method of Calibrating Beam Position in Charged-Particle Beam System - A method of calibrating the beam position in a charged-particle beam system starts with finding a focus deviation on the material surface for each point within a deflection field. A focus correction voltage V07-30-2009
20090152455METHODS FOR CALIBRATING MASS SPECTROMETRY (MS) AND OTHER INSTRUMENT SYSTEMS AND FOR PROCESSING MS AND OTHER DATA - A method for obtaining at least one calibration filter for a Mass Spectrometry (MS) instrument system. Measured isotope peak cluster data in a mass spectral range is obtained for a given calibration standard. Relative isotope abundances and actual mass locations of isotopes corresponding thereto are calculated for the given calibration standard. Mass spectral target peak shape functions centered within respective mass spectral ranges are specified. Convolution operations are performed between the calculated relative isotope abundances and the mass spectral target peak shape functions to form calculated isotope peak cluster data. A deconvolution operation is performed between the measured isotope peak cluster data and the calculated isotope peak cluster data after the convolution operations to obtain the at least one calibration filter. Provisions are made for normalizing peak widths, combining internal and external calibration, and using selected measured peaks as standards. Aspects of the methods are applied to other analytical instruments.06-18-2009
20090065686METHODS AND SYSTEMS FOR BACKGROUND CORRECTION IN TANDEM MASS SPECTROMETRY BASED QUANTITATION - A corrected reporter ion intensity is calculated in tandem mass spectrometry based quantitation using isobaric labels. An analyte in each of two or more samples of a mixture of samples is labeled with a different isobaric label. The analyte is eluted from the mixture of samples and intensities of the eluting analyte are measured. An analyte intensity is selected at each of at least two times from the measured intensities. Tandem mass spectrometry is performed on the eluting analyte at each of the at least two times. A plurality of reporter ion intensities is produced. A system of linear equations is created expressing each reporter ion intensity of the plurality of reporter ion intensities as a sum of a background noise intensity and the product of a fragmentation efficiency and an analyte intensity. A corrected reporter ion intensity is calculated from a solution of the system of linear equations.03-12-2009
20090121122TECHNIQUES FOR MEASURING AND CONTROLLING ION BEAM ANGLE AND DENSITY UNIFORMITY - Techniques for measuring and controlling ion beam angle and density uniformity are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for measuring and controlling ion beam angle and density uniformity. The apparatus may include a measuring assembly having an opening, a cup, and at least one collector at the rear of the cup. The apparatus may further include an actuator to move the measuring assembly along an actuation path to scan an ion beam to measure and control ion beam uniformity.05-14-2009
20110139972Methods and Apparatus for Providing FAIMS Waveforms Using Solid-State Switching Devices - A high field asymmetric waveform ion mobility spectrometry (FAIMS) comprises an electrical power supply electrically connected to at least one of the FAIMS electrodes and operable to as to apply a periodic asymmetric square-wave waveform voltage to at least one of the electrodes so as to selectively transmit a type of ion in and through a FAIMS analyzer region to an ion outlet, wherein the electrical power supply is operable so as to vary a time duration of pulses of the asymmetric square-wave waveform so as to control the type of ion selectively transmitted, an efficiency of said selective transmission or the ability to prevent transmission of a different type of ions in and through said analyzer region to the ion outlet.06-16-2011
20110198487OPTICAL READHEAD AND METHOD OF USING THE SAME - A method of determining auto-calibrating information of a test sensor includes providing an optical read head that includes a light source, a light guide and a detector. The read head forms an opening that is sized to receive a test sensor. The detector includes a linear-detector array or single detector. A test sensor is provided having apertures formed therein. The test sensor is placed in the opening of the optical read head. Light is transmitted from the light source through the apertures. The light transmitted through the apertures using the detector or detecting the absence of light being transmitted through the test sensor using the detector is detected. The detected light or the absence of detected light information from the detector is used to determine the auto-calibration information of the test sensor.08-18-2011
20090272888THERMAL INFRARED IMAGING SYSTEM AND ASSOCIATED METHODS FOR RADIOMETRIC CALIBRATION - A thermal infrared (IR) imaging system and associated calibration methods are described. In various illustrative embodiments, techniques are provided for the stabilization and radiometric calibration of a thermal IR imager without stabilization of the device's focal-plane-array (FPA) temperature. In one embodiment, a scene image is corrected for FPA temperature to produce a FPA-temperature-stabilized image, to which radiometric calibration can optionally be added through additional calculations and prior device characterization. In another embodiment, the internal shutter of the thermal IR imager is used as an equivalent external blackbody source to cancel the FPA-temperature-dependent offset from a scene image Radiometric calibration can be included through additional calculations and prior device characterization. In some embodiments, these techniques are combined to correct for dependence on FPA temperature of both the imager's responsivity and its zero-radiance-scene offset.11-05-2009
20090272889METHOD FOR MEASURING FIBER DIGESTIBILITY - Described is a method of measuring fiber digestion in ruminants and calibrating spectrophotometers using the measured fiber digestion values. The method includes the steps of harvesting rumen fluid from at least one ruminant animal and combining the rumen fluid with a primer composition comprising a carbohydrate. The rumen fluid and carbohydrate are then incubated in a sealed container until a pre-determined pressure is achieved within the sealed container. A plant matter sample is digested with the rumen fluid so treated. The digested sample is the measured for absorbance or reflectance using a spectrophotometer. The digestion values and the absorbance or reflectance values are then correlated to construct a standard curve for predicting fiber digestion values using spectrophotometric analysis, preferably NIRS analysis.11-05-2009
20090283668CALIBRATION METHOD AND SYSTEM FOR PET SCANNERS - A method, system and kit for calibrating a PET scanner is disclosed. A first aliquot (11-19-2009
20100276580Quantitative Calibration Method and System for Genetic Analysis Instrumentation - Aspects of the present invention provide a method and apparatus of generating a calibration matrix for a spectral detector instrument. A calibration plate contains one or more dye mixtures in each well of the calibration plate at known absolute concentration. From the calibration plate, aspects of the present invention are used to prepare a concentration matrix based on the dyes used in the assay and the different dye mixtures used in the calibration plate. An excitation source exposes the calibration plate causing the spectral species in each of the wells to fluoresce. The emission spectra for the different dye mixtures of dyes as gathered by the spectral detector instrument at different points in the range of spectra is used to generate a spectral matrix. Bilinear calibration is performed on the concentration matrix and the spectral matrix as to determine a calibration matrix relating spectra directly to absolute concentrations.11-04-2010
20100276578METHOD FOR DETERMINING DEGREE OF AGING OF A POLYMER RESIN MATERIAL - A method of determining degree of aging of an incompletely cured polymer resin material collecting IR spectra on a series of standards with carefully controlled aging time and data collected at appropriate time intervals with the standard LC method for determining cure condition of the material, using said spectra and LC data to make a multivariate calibration model and using said model to predict the cure condition of uncured samples of interest.11-04-2010
20120292494METHOD AND SYSTEM FOR SPECTRAL CALIBRATION OF A REMOTE SENSING SENSOR AND A SYNTHETIC TARGET HAVING A TUNABLE SPECTRAL COMPOSITION - A method and a system for spectral calibration of a remote sensing sensor and a synthetic target having a tunable spectral composition are described. The system or synthetic target includes a plurality of reflective mirrors arranged to reflect radiation from a source of radiation onto a remotely located radiation sensor. A first mirror in the plurality of mirrors is configured to reflect a first portion of the radiation in a first wavelength toward the remotely located radiation sensor. A second mirror in the plurality of mirrors is configured to reflect a second portion of the radiation in a second wavelength different from the first wavelength toward the remotely located radiation sensor. The first portion of the radiation and the second portion of the radiation can be selected to calibrate the remotely located radiation sensor so as to provide a quantitative spectral relationship between the radiation detected at the remotely located sensor and the radiation reflected by the plurality of mirrors.11-22-2012
20090261239Self Calibrating Irradiation System - A self calibrating irradiation system is provided. The system includes sources for providing a calibration beam and a radiation beam, one or more detectors and a processor. A method of calibrating an irradiation system is also provided. The method includes measuring the energy of a calibration beam and periodically updating a transmission value of the laser system based on a calibration factor and the energy of the calibration beam.10-22-2009
20080245958SYSTEM AND METHOD TO CREATE HAZE STANDARD - In one embodiment, a system to create a haze standard on a surface of an object, comprises a radiation targeting assembly that targets a radiation beam onto the surface of the object, a drive assembly to impart relative motion between the radiation targeting assembly and the surface of the object, and a controller to regulate the radiation targeting assembly to deliver radiation at a controlled power level to at least one portion of the surface, thereby forming at least one region having a known haze characteristic.10-09-2008
20100102214Optical phase reference - A validation apparatus for testing the measurement accuracy of a phase fluorimeter comprising:04-29-2010
20110266426Methods for Calibration of Usable Fragmentation Energy in Mass Spectrometry - A method of calibrating ion collision energy used in a mass spectrometer, comprises: (a) obtaining fragment ion yield data for each of a plurality of precursor ion populations having respective mass-to-charge ratios at each of a plurality of settings of a fragmentation-energy-related variable; (b) locating, for each mass-to-charge ratio, reference values of the fragmentation-energy-related variable, each reference value corresponding to a respective reference feature of the ion yield data at the mass-to-charge ratio; (c) determining, from the plurality of locating steps, the variation, with mass-to-charge-ratio, of each of the reference values of the fragmentation-energy-related variable; (d) associating each of the reference values of the fragmentation-energy related variable with respective reference values of a dimensionless useable-fragmentation-energy variable; and (e) storing parameters describing the variation of each of the reference values of the fragmentation-energy-related variable with mass-to-charge ratio, wherein the parameters comprise coefficients of at least one non-linear equation.11-03-2011
20080237456Method And Apparatus For Observing A Specimen - A method and device for observing a specimen, in which a convergent electron beam is irradiated and scanned from a desired direction, on a surface of a calibration substrate on which a pattern with a known shape is formed, and a beam SEM image of the pattern formed on the calibration substrate is obtained. An actual direction of the electron beam irradiated on the surface of the calibration substrate is calculated by use of the information about an apparent geometric deformation of the known shape on the SEM image, and the actual direction of the electron beam to the desired is adjusted direction by using information of the calculated direction. The pattern with the known shape formed on the calibration substrate has a crystal plane formed by anisotropic chemical etching10-02-2008
20080283737BACKLIGHT MODULE AND CALIBRATION METHOD THEREOF - A backlight module having a plurality of light emitting blocks is provided. The backlight module includes a plurality of light emitting devices and a plurality of photo-sensors. The light emitting devices are disposed in the light emitting blocks. Herein, the light emitting devices disposed in the same lighting block can be turned on simultaneously. Further, the photo-sensors are disposed among the light emitting blocks. Herein, the photo-sensors are capable of detecting the luminous intensity of the neighboring light emitting blocks. The photo-sensors of the above-mentioned backlight module can accurately detect the luminous intensity of each light emitting block. A calibration method of the backlight module is also provided.11-20-2008
20080290264Corrector for the correction of chromatic aberrations in a particle-optical apparatus - The invention describes a corrector for the correction of chromatic aberrations in a particle lens, such as used in a SEM or a TEM. So as to reduce the stability demands on the power supplies of such a corrector, the energy with which the particle beam passes through the corrector is lower than the energy with which the beam passes through the lens to be corrected.11-27-2008
20080290265SYSTEM AND METHOD OF CALIBRATING A MILLIMETER WAVE RADIOMETER USING AN OPTICAL CHOPPER - A system of calibrating a millimeter wave radiometer using an optical chopper is disclosed. In a particular embodiment, the system includes a scanning mirror for reflecting millimeter wave energy from a scene and an optical chopper that is adapted to periodically interrupt the flow of the millimeter wave energy. The system further includes a synchronization processor for synchronizing oscillations of the scanning mirror with the movement of the optical chopper. In addition, a calibration processor calibrates the millimeter wave radiometer using a reference target of the optical chopper that has predetermined constant millimeter wave energy.11-27-2008
20080308718POSITION CONTROL FOR SCANNING PROBE SPECTROSCOPY - A method of position control for scanning probe spectroscopy of a specimen. Probe positional error is determined by comparing images generated from a sequence of scans to identify differences between positions of at least a portion of a reference characteristic of the specimen in the images. A probe is moved to a target location for spectroscopic analysis, as a function of the determined probe positional error.12-18-2008
20080265150Optical measuring system - Apparatus and methods are described for measuring amplitude and phase variations in a spatially coherent beam of light. A beam of coherent light is made incident upon a spatial array of phase modulating elements displaying a pixelated first phase distribution. In a measuring region of said spatial array, the phase distribution is changed to a new value while retaining the first phase distribution outside the measuring region, for example by flashing a single pixel. The change in intensity resulting from the change in phase distribution is then determined.10-30-2008
20090314933Low-Scattering Foam Phantom for Molecular Imaging - A phantom for use in generating a normalization data set to be used in PET scanning (particularly integrated MR/PET scanning) is disclosed. The phantom features radiation activity distributed throughout a foam material. The foam—e.g., a polyurethane foam—may be produced by reacting two liquids, one of which is emulsified with water in which Ge12-24-2009
20090314932TECHNIQUES FOR MEASURING ION BEAM EMITTANCE - Techniques for measuring ion beam emittance are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for measuring ion beam emittance. The apparatus may comprise a measurement assembly comprising a first mask, a second mask, and a pivot axis, such that the measurement assembly rotates about the pivot axis in order to scan an ion beam using either the first mask or the second mask to measure ion beam emittance for providing a measure of ion beam uniformity.12-24-2009
20090014635METHOD FOR CORRECTING SPECTRAL INTERFERENCE IN ICP EMISSION SPECTROSCOPY (OES) - The present invention relates to a method for correcting spectral interference in a spectrum which is determined using an inductively coupled plasma spectrometer (ICP) for analysing element contents of a liquid or gaseous sample, comprising the following steps: 01-15-2009
20080272284Calibrating a Positron Emission Tomography Scanner - A method for calibrating a positron emission tomography scanner of a radiation therapy device is provided. The method includes applying at least one defined radiation dose in a sample body; measuring the activity generated by the radiation dose using the positron emission tomography scanner; and calibrating the positron emission tomography scanner based on the measured activity.11-06-2008
20100270462Slit and slot scan, SAR, and compton devices and systems for radiation imaging - The invention provides methods and apparatus for detecting radiation including x-ray photon (including gamma ray photon) and particle radiation for radiographic imaging (including conventional CT and radiation therapy portal and CT), nuclear medicine, material composition analysis, container inspection, mine detection, remediation, high energy physics, and astronomy. This invention provides novel face-on, edge-on, edge-on sub-aperture resolution (SAR), and face-on SAR scintillator detectors, designs and systems for enhanced slit and slot scan radiographic imaging suitable for medical, industrial, Homeland Security, and scientific applications. Some of these detector designs are readily extended for use as area detectors, including cross-coupled arrays, gas detectors, and Compton gamma cameras. Energy integration, photon counting, and limited energy resolution readout capabilities are described. Continuous slit and slot designs as well as sub-slit and sub-slot geometries are described, permitting the use of modular detectors.10-28-2010
20110266427Imaging Test Piece for Medium and Large Security X-Ray Scanners - The invention provides a test device for assessing the detection capability of an X-ray system with a medium and/or large tunnel size. The device comprises a support and at least one test module mounted on the support. The device may optionally also comprise a stand which holds the support at a predetermined angle to the horizontal. The test module, or at least one of the test modules, is capable of being used in a test for an aspect of the detection capability.11-03-2011
20100200742POST-IONIZATION OF NEUTRALS FOR ION MOBILITY OTOFMS IDENTIFICATION OF MOLECULES AND ELEMENTS DESORBED FROM SURFACES - The present invention relates to a method and apparatus for ionizing a neutral MALDI desorption plume, and in particular, for efficiently measuring the ionized MALDI desorption plume when post-ionization techniques are combined with a medium pressure MALDI-IM-oTOFMS instrument. Additionally, the present disclosure provides a method and apparatus that simultaneously separates tissue-sample MALDI ions by IM-oTOFMS according to their chemical family. After separation, the MALDI ions are directly compared to the ions created by post-ionizing the co-desorbed neutral molecules with a second laser wherein the second laser is delayed by a few hundred microseconds. The present disclosure further provides novel approaches that enhance the analysis of ions, including the use of giant fullerene internal standards to enhance mass accuracy, and ultraviolet (UV) declustering lasers to generate intact peptides and proteins, either of which may be followed by VUV post-ionization which generates identifiable structural fragments.08-12-2010
20090084947METHOD FOR CALIBRATING NUCLEAR MEDICINE DIAGNOSIS APPARATUS - A nuclear medicine diagnosis apparatus, which rotates a rod-shaped radiation source or a point radiation source while changing the radius thereof and carries out a calibration work, is provided to resolve the following problems. If detector calibration is carried out using a cylindrical phantom whose interior is filled with a 04-02-2009
20110139973TOF MASS SPECTROMETER FOR STIGMATIC IMAGING AND ASSOCIATED METHOD - The present invention is concerned with improving the focusing of ions having a particular mass to charge ratio by optimising the electric field for the focusing of ions having that particular mass to charge ratio. In particular, the stigmatic focusing of ions can be improved by adjusting a voltage applied to an ion-optical lens 06-16-2011
20090230294Methods and Systems for In Situ Calibration of Imaging in Biological Analysis - Software, methods, and systems for calibrating photometric devices are provided. These involve using a non-uniform test illumination field to approximate a photon transfer curve by calculating stable pixel values and statistical dispersions on a pixel-by-pixel basis.09-17-2009
20090242744ARRANGEMENT FOR PRODUCING ELECTROMAGNETIC RADIATION AND METHOD FOR OPERATING SAID ARRANGEMENT - A method for operating an assembly configured to produce electromagnetic radiation, especially X-ray radiation or extreme ultraviolet radiation. Particles, especially electrons, are guided onto a target by way of an adjustable focusing device. The particles produce electromagnetic radiation in the target. At least one object, especially a calibration object, is penetrated by the electromagnetic radiation and a radiogram of the object is recorded. The radiogram or a plurality of radiograms is automatically evaluated and the focusing device is adjusted depending on the evaluation.10-01-2009
20090256066Method for calibrating detected mass in mass spectrometry - In a mass spectrometry system designed so as to feed a solution to an interface 10-15-2009
20100012828Infrared Sensor and Method of Calibrating the Same - An infrared sensor system and a method of calibrating the system are disclosed. In one aspect, a method includes determining a transmission of a transmissive window and a transmission of a transmissive fluid. In addition, an infrared emission of the transmissive window is determined along with an infrared emission of the transmissive fluid for at least one temperature. In a system that has an infrared sensor and an optical pathway to the infrared sensor, the transmissive window and the transmissive fluid are placed in the optical pathway. A semiconductor chip is placed in the optical pathway proximate the transmissive fluid. Radiation from the optical pathway is measured with the infrared sensor. An emissivity of the semiconductor chip is determined using the measured radiation and the determined transmissions and emissions of the transmissive window and the transmissive fluid.01-21-2010
20110127415SYSTEM FOR CONTROLING AND CALIBRATING SINGLE PHOTON DETECTION DEVICES - A single photon detection system and method are disclosed which have a control block for helping to monitor and optimize performance, especially at high detection rates. The system is based on photon detectors constructed with avalanche photodiodes (APD) gated in time to operate in the Geiger mode. An electrical reference frequency is generated which is subtracted from the APD output in order to better isolate the breakdown event. The resulting signal is sampled and analyzed to allow the control unit to optimize the magnitude and phase of the electrical reference frequency. The control unit may also change the gate pulse shape and phase, including by the use of a digital-to-analog converter. The gate pulse can be shifted off an input optical pulse so as to estimate dark count rate, or shifted to measure a reference input signal to estimate detection efficiency.06-02-2011
20100012829APPARATUS AND METHODS FOR REAL-TIME VERIFICATION OF RADIATION THERAPY - Various embodiments are described herein for an area integrated fluence monitoring sensor that can be used to measure a radiation dose. The sensor comprises at least one Gradient Ion Chamber (GIC) comprising an ion chamber having a volume gradient across a length or width thereof, a gas or liquid located within the ion chamber and an electrode to detect ions generated within the gas or liquid when the at least one GIC is subjected to an ionizing radiation beam. Various embodiments are also described herein for an Integral Quality Monitoring system and associated method that can be used to measure and monitor the quality of radiation doses provided by a radiation treatment system.01-21-2010
20100148047Method for Improving Clinical Data Quality In Positron Emission Tomography - A method for improving clinical data quality in Positron Emission Tomography (PET). The method provides for the processing of PET data to accurately and efficiently determine a data single-to-noise ratio (SNR) corresponding to each individual clinical patient scan, as a function of a singles rate in a PET scanner. The method relates an injected dose to the singles rate to determine SNR(D06-17-2010
20100148046METHOD FOR COLLABORATIVE TUNING OF GAMMA CAMERA - A system and tuning method to collaboratively calibrate high voltage DAC values and Photomultiplier Tube DAC values of photomultiplier tubes of a gamma camera so that the detector produces a valid energy spectrum over the entire detector surface. A method for tuning a gamma camera having a plurality of photosensors, exposes the photosensors to scintillation photons corresponding to nuclear radiation of known energy; measures an energy output corresponding to each specific photosensor; calculates an average enemy output of all photosensors in the camera; collaboratively adjusts a DAC value corresponding to a voltage applied to a specific photosensor and a DAC06-17-2010
20100155587SYSTEM AND METHOD FOR IMPROVING THE QUALITY OF THERMAL IMAGES - An image improvement system and method are disclosed that compensates for effects of optical scattering and pixel cross-talk on image quality in an imager employing a focal plane array. The method characterizes these effects on a test image, presents them as a set of stored numerical coefficients, and applies the coefficients during image processing.06-24-2010
20100187410RADIATION IMAGING APPARATUS, PROCESSING METHOD THEREFOR, AND RADIATION IMAGING SYSTEM - An apparatus includes an imaging unit configured to perform imaging by using a plurality of image capture elements for accumulating electric charges, a storage unit configured to store an offset correction image, a correction image generation unit configured, when capturing a radiation image through radiant-ray irradiation, to combine the offset correction image with an image captured by using a part of the plurality of image capture elements through the imaging unit without radiant-ray irradiation to update the offset correction image, and a correction processing unit configured to correct the captured radiation image, based on the offset correction image.07-29-2010
20100193674Lamp system producing uniform high intensity ultraviolet light for exposure of photolithographic and other light polymerizable materials - A lamp exposure system producing uniform, high intensity ultraviolet light includes a plurality of lamps generating light in an ultraviolet spectrum range, a separate reflector associated with and covering each of the plurality of lamps, forming distinct lamp and reflector pairs, such that each lamp reflector pair has a generally separate reflective light path to a surface of a substrate, at least one capacitor connected to each lamp to store energy to energize the lamp, and a triggering and control circuit to trigger the at least one capacitor connected to each lamp independently, such that each lamp can be controlled separately with respect to illumination time and intensity. A method for exposing substrates to ultraviolet light, and a method for calibrating the lamp exposure system are also disclosed.08-05-2010
20100155588RECOMBINANT VON WILLEBRAND FACTOR AS MOLECULAR WEIGHT MARKER FOR MASS SPECTROMETRY ANALYSES - Methods for determining molecular mass of at least 150 kDa of an analyte of interest using MALDI mass spectrometry in combination with a recombinant von Willebrand factor (rVWF) molecular weight marker are disclosed. More specifically, monomeric and multimeric rVWF are used for external and internal calibration of mass spectra applied for analytes having high molecular weights above 150 kDa.06-24-2010
20090072131Estimation of Crystal Efficiency With Axially Compressed Sinogram - The present invention provides a method for estimating crystal efficiency in a PET detector that takes axial compression into account. It does so via an iterative methodology in which a μ-map is first generated and then is used to obtain a solution for the equation03-19-2009
20100176284Radiation Beam Analyzer And Method - A radiation beam analyzer for measuring the distribution and intensity of radiation produced by a CyberKnife®. The analyzer employs a relative small tank of water into which a sensor is placed. The distance between the sensor and the radiation source is not varied. The tank of water is raised and lowered relative to the sensor to simulate the location of a malady within a patient's body. This movement of the tank permits the radiation from the CyberKnife® to be properly calibrated and adjusted for a proper treatment of a malady in a patient. In a second embodiment a radiation beam analyzer measures the distribution and intensity of radiation produced by a radiation source. The analyzer employs a relative small tank of water into which a sensor or detector is placed. The distance between the sensor and the radiation source is not varied. There are two methods to maintain the SAD (source to axis distance) constant. A first method maintains the position of detector fixed, utilizing a holder designed to retain the detector, and raises or lowers the small tank of water. A second method moves the detector up or down with a raising and lower mechanism in one direction and synchronically moves the small tank of water in the opposite direction with another raising and lowering mechanism. The second method also keeps the SAD constant. These methods position the detector relative to the radiation source to simulate the location of a malady within a patient's body. This movement of the tank permits the radiation from the radiation beam source to be properly isocentrically measured.07-15-2010
20100224769Method of calibrating an apparatus for measuring radon and/or its progeny in an air sample - A method of calibrating an apparatus for measuring Radon and/or its progeny in an air sample, includes providing an apparatus for measuring Radon in an air sample that includes a preset offset voltage corresponding to a threshold conductivity value and a preselected reading value for indicating a concentration of Radon and/or its progeny, exposing the apparatus to a calibration area for measuring conductivity of the air therein, comparing the measured conductivity value of the air with the preset offset value for conductivity, and setting a lower threshold conductivity value and corresponding threshold reading value same as the preselected reading value, if the measured conductivity of the air is determined to be lower than the preset offset value for conductivity.09-09-2010
20100213361Mass Spectrometer - A mass spectrometer is disclosed wherein an ion signal is split into a first and second signal. The first and second signals are multiplied by different gains and are digitised. Arrival time and intensity pairs are calculated for both digitised signals and the resulting time and intensity pairs are combined to form a high dynamic range spectrum. The spectrum is then combined with other corresponding spectra to form a summed spectrum.08-26-2010
20100252723DIGITAL SILICON PHOTOMULTIPLIER FOR TOF-PET - A radiation detector includes an array of detector pixels each including an array of detector cells. Each detector cell includes a photodiode biased in a breakdown region and digital circuitry coupled with the photodiode and configured to output a first digital value in a quiescent state and a second digital value responsive to photon detection by the photodiode. Digital triggering circuitry is configured to output a trigger signal indicative of a start of an integration time period responsive to a selected number of one or more of the detector cells transitioning from the first digital value to the second digital value. Readout digital circuitry accumulates a count of a number of transitions of detector cells of the array of detector cells from the first digital state to the second digital state over the integration time period.10-07-2010
20100224771SYSTEM AND METHOD FOR CALIBRATING AN AMBIENT LIGHT SENSOR - A system and a method for calibrating an ambient light sensor (ALS) are disclosed. The ALS, an adjustable resistor and a switch are located on a first surface of a printed circuit board (PCB), and the adjustable resistor and the switch are connected in series between an adjustable probe of the ALS and the ground. A resistor is connected between two pads located on a second surface of the PCB via two probes touching the pads. A controller connected to the PCB reads a light sensitivity of the ALS and calculates a calculated resistance value of the adjustable resistor by a formula “detected light sensitivity/resistance value of the resistor=objective light sensitivity/resistance value of the adjustable resistor”, wherein the objective light sensitivity and the resistance value of the resistor are given.09-09-2010
20100224772Apparatus and Method for Temperature Mapping a Rotating Turbine Component in a High Temperature Combustion Environment - Apparatus and method for temperature mapping a rotating component (09-09-2010
20100243876Optical Standard for the Calibration and Characterization of Optical Measuring Devices - The invention relates to an optical standard (09-30-2010
20100219333METHOD AND KIT FOR CALIBRATING A PHOTOLUMINESCENCE MEASUREMENT SYSTEM - The invention is directed to a method and a kit for calibrating a photoluminescence measurement system, in particular a fluorescence measurement system. The kit includes a number of fluorescence standards i and their corrected and certified fluorescence spectra I09-02-2010
20100133426Sample and method for evaluating resolution of scanning electron microscope, and electron scanning microscope - A method of evaluating a resolution of a scanning electron microscope includes picking up a first image of a concave and convex pattern formed on a surface of a sample utilizing a first scanning electron microscope, picking up a second image of the concave and convex pattern on the sample utilizing a second scanning electron microscope, respectively processing the first image and the second image in order to evaluate unevenness in resolution between the first scanning electron microscope and the second scanning electron microscope, and determining whether a height of the concave and convex pattern as measured from a bottom thereof is sufficient so that no affection by a secondary electron emitted from the bottom of the concave and convex pattern is exhibited.06-03-2010
20100243878METHOD AND DEVICE FOR MONITORING AN AUTOMATIC DRIFT COMPENSATION - A device for monitoring an automatic drift compensation of a scintillation counter may include a drift compensation monitoring unit which is designed to evaluate a counting rate caused by a monitoring radiation source for the purpose of monitoring the automatic drift compensation.09-30-2010
20090020692SCATTERED RADIATION CORRECTION OF DETECTOR SIGNALS FOR PROJECTION-BASED IMAGING - A method of correcting detector signals, in particular for scatter noise correction with an projection-based imaging device, comprises the steps of irradiating an object (01-22-2009
20110057093METHOD FOR CALIBRATING A DEFLECTION UNIT IN A TIRF MICROSCOPE, TIRF MICROSCOPE, AND METHOD FOR OPERATING THE SAME - The invention relates to a method for calibrating a deflection unit in a TIRF microscope, by means of which an angle of incidence of excitation light onto a specimen is adjusted, wherein a setting of said deflection unit is adjusted such that the pertaining angle of incidence is definitely greater or definitely smaller than an anticipated critical angle for total reflection of the excitation light on a surface of a used specimen, the angle of incidence is scanned by varying the setting of said deflection unit in the direction of an anticipated critical angle, an intensity of an optical response of the used specimen elicited by the excitation light being measured for each setting of the deflection unit, the intensity of the optical response of the specimen used is measured at least for a number of settings of the deflection unit until the intensity of the optical response of the specimen used traverses a flank, and the setting of the deflection unit pertaining to the flank is stored as the setting for the critical angle for total reflection at the specimen used.03-10-2011
20080277572Ionizing radiations - An anthropometric phantom that can be subjected to ionizing radiations comprises a simulation of a part at least of a human body and which includes a number of cavities that contain a liquid that changes in colour when exposed to radiation.11-13-2008
20090108191Mass Spectrometer gain adjustment using ion ratios - The gain of the ion detector of a mass spectrometer is calibrated by using the ion detector to measure a ratio of the abundances of at least two ion species having a known abundance ratio. The gain of the ion detector is changed until the measured abundance ratio matches the known abundance ratio.04-30-2009
20100301198INTRINSIC RADIOACTIVITY IN A SCINTILLATOR AS COUNT RATE REFERENCE - Methods and related systems are described for the detection of nuclear radiation. The system can include a scintillator material that intrinsically generates radiation and a photodetection system coupled to the scintillator material and adapted to generate electrical signals based on light emitted from the scintillator material. A processing system adapted and programmed to receive the electrical signals, to generate a count rate reference value based at least in part on electrical signals generated in response to the light emitted from the scintillator material due to the intrinsically generated radiation.12-02-2010
20100301197MONITORING SYSTEM - A system and method for monitoring user exposure to toxic compounds are described. Compounds monitored are preferable volatile organic compounds including benzene, toluene, or xylene. An adsorbent badge is provided for wearing by a user; this is subsequently analysed by means of a field asymmetric ion mobility spectrometer. Multiple badges may be provided to different users, each associated with a unique user identifier.12-02-2010
20110127413Systems and Methods for Calibrating Time Alignment For A Positron Emission Tomography (PET) System - A representative positron emission tomography (PET) calibration system includes a PET scanner having a ring detector, a phantom that is placed at approximately the center of the ring detector, and a time alignment calibration manager that is coupled to the PET scanner. The time alignment calibration manager detects coincidence events from the phantom, calculates position of time of flight events from the ring detector based on the detected coincidence events, and calculates time offsets for the ring detector using a mean value calculation based on the calculated position of the time of flight events.06-02-2011
20100133427EXTENDED DYNAMIC RANGE LIGHT DETECTION SYSTEMS AND METHODS - Systems and methods for detecting and measuring light emitted from a sample and having a large dynamic range, e.g., a range of luminous intensity covering six or more orders of magnitude, that may be difficult to fully detect using a single detector with a limited detection range. Simultaneous measurements of the emitted light in two intensity ranges are performed using two detectors, e.g., one including a photomultiplier tube (PMT) and the other including a solid state detector such as a photodiode. A beam splitting element directs light emitted from a sample under investigation to both detectors simultaneously such that a portion of the light impinges on the first detector and a second portion of the light impinges on the second detector. A processor receives output signals from the two detectors and provides an output representing the luminous intensity of the sample over a detection range greater than the detection range of each individual detector, thereby providing a detection system having an enhanced dynamic range.06-03-2010
20110108718NOVEL AUTO CALIBRATION TECHNIQUE FOR RADIATION DETECTORS - An apparatus and a method for calibrating a source detection device. The apparatus comprises a detector having a known amplification gain, a count rate meter, a means of measuring peak energy of a detected particle, a means of counting the number of particles detected at a given energy range and a means of comparing the number of particles counted over an energy range with an expected value. The apparatus adjusts the gain to cause the measured spectrum to correspond with an expected spectrum.05-12-2011
20110108717Infrared Sensor Control Architecture - A system and method for optimizing fixed and temporal noise in an infrared imaging system. The system may use correction tables with correction factors, each correction factor indexed to a plurality of system parameters.05-12-2011
20110031386DEVICE AND METHOD FOR CALIBRATING A SENSOR SYSTEM - The invention relates to an apparatus and a method for the calibration of a sensor system.02-10-2011
20110031387CHARGED PARTICLE BEAM WRITING APPARATUS AND METHOD THEREOF - A charged particle beam writing apparatus includes a charge amount distribution calculation unit configured to calculate a charge amount distribution which is charged by irradiation of a charged particle beam onto a writing region of a target workpiece, by using a charge decay amount and a charge decay time constant both of which depend on a pattern area density, a position displacement amount distribution calculation unit configured to calculate a position displacement amount of each writing position due to charge amounts of the charge amount distribution by performing convolution of each charge amount of the charge amount distribution with a response function, and a writing unit configured to write a pattern on the each writing position where the position displacement amount has been corrected, using a charged particle beam.02-10-2011
20090050796METHOD FOR ENHANCING MASS ASSIGNMENT ACCURACY - A method of operating an ion trap spectrometer system having an ion trap is provided. The method comprises a) providing a group of ions for analysis, wherein the group of ions includes a first analyte; b) providing a filtered first analyte having a first mass-to-charge ratio by filtering out ions other than the first analyte; c) storing the filtered first analyte in the ion trap; d) storing a first set of calibrant ions in the ion trap with the filtered first analyte, wherein the first set of calibrant ions has at least one calibrant ion and each calibrant ion in the first set of calibrant ions has a known mass-to-charge ratio; e) transmitting the filtered first analyte and the first set of calibrant ions from the ion trap for detection; f) detecting the filtered first analyte to generate a first analyte mass signal peak representing the filtered first analyte, and detecting each calibrant ion in the first set of calibrant ions to generate an associated calibrant mass signal peak for each calibrant ion in the first set of calibrant ions; and, g) calibrating a first mass signal derived from the first analyte mass signal peak by comparing the known mass-to-charge ratio and the associated calibrant mass signal peak for each calibrant ion in the first set of calibrant ions.02-26-2009
20090032693Scanning Electron Microscope Alignment Method and Scanning Electron Microscope - The present invention aims to provide an axis alignment method, astigmatism correction method and SEM for implementing these methods, which can prevent an alignment or correction error attributable to conditions of a specimen. A first aspect is to obtain the difference between the optimal values acquired from an automatic axis alignment result on a standard sample and from each of automatic axis alignment results on a observation target sample, and to correct an optimal value adjusted using the standard sample by use of the difference thus obtained. A second aspect is to acquire an optimal stigmator value (astigmatism correction signal) by using the standard sample, to store the optimal stigmator value as a default value, to add the optimal stigmator value and the default value depending on the height of an observation target sample pattern, and to perform an astigmatism correction on the basis of the resultant stigmator value.02-05-2009
20090218480METHOD OF AND SYSTEM FOR CALIBRATION OF INSPECTION SYSTEMS PRODUCING X-RAY IMAGES - According to one embodiment, a calibration system for calibrating image data produced by an imaging system is provided. The calibration system includes a processor configured for: receiving the image data from the imaging system; receiving a plurality of reference values from the imaging system; and calibrating the image data using the reference values. The reference values correspond to air image data produced by the imaging system.09-03-2009
20100065728Apparatus and method for setting group of sensor node - An apparatus for setting a group of a sensor node and a method thereof. According to the apparatus and the method, intensity of a communication signal output from a sensor node is lowered, and the sensor node is set as a group of a master if the communication signal is received in the master, so that the sensor node can be exactly set as belonging to the group of the master.03-18-2010
20120175509GAMMA CAMERA CALIBRATION METHODS AND SYSTEMS - Calibration techniques for a gamma camera of a medical imaging system are provided. The calibration of a gamma camera includes acquiring data from a patient at a gamma camera over a first interval, processing the received data to determine a pixel energy spectrum for each pixel of the data and a main energy peak location for each pixel based on the pixel energy spectrum, and calibrating the gamma camera based on the main energy peak location. Imaging systems implementing the calibration techniques are also provided.07-12-2012
20110101212METHOD FOR ADJUSTING A SPATIAL LIGHT MODULATOR - A method for adjusting a spatial light modulator comprising an array of channels, the method includes selecting a plurality of channel sets, wherein all the channels in each set are contiguously arranged; determining a first intensity value for first output radiation in the channel sets; performing a first adjustment based on the first intensity value, including adjusting a control level of a first channel in the first channel set without adjusting a control level of a second channel in the first one of the channel sets; determining a second intensity value for second output radiation, which includes output radiation by some of the channels in the first channel set, and excludes output radiation provided by at least one channel in the first channel set; and performing a second adjustment based at least on the second intensity value.05-05-2011
20110174963PRACTICAL SPECT CALIBRATION METHOD FOR QUANTIFICATION OF NUCLIDES WITH HIGH-ENERGY CONTRIBUTIONS - When calibrating a nuclear camera, such as a SPECT camera, point spread functions (PSF) are simulated for all possible photon energies and detection distances that the camera may experience. During manufacturer-side calibration, a point source (07-21-2011
20110024611CALIBRATION METHOD FOR VIDEO AND RADIATION IMAGERS - The relationship between the high energy radiation imager pixel (HERIP) coordinate and real-world x-coordinate is determined by a least square fit between the HERIP x-coordinate and the measured real-world x-coordinates of calibration markers that emit high energy radiation imager and reflect visible light. Upon calibration, a high energy radiation imager pixel position may be determined based on a real-world coordinate of a moving vehicle. Further, a scale parameter for said high energy radiation imager may be determined based on the real-world coordinate. The scale parameter depends on the y-coordinate of the moving vehicle as provided by a visible light camera. The high energy radiation imager may be employed to detect radiation from moving vehicles in multiple lanes, which correspondingly have different distances to the high energy radiation imager.02-03-2011
20090294640SYSTEM FOR CAPTURING GRAPHICAL IMAGES USING HYPERSPECTRAL ILLUMINATION - A graphical scanner for scanning a graphical image includes a source for producing an optical beam, a monochromator for dividing the optical beam into a plurality of component beams for hyperspectral bandpasses, a director for directing the component beams to illuminate portions of the graphical image, a sensor for measuring a light intensity for the one or illuminated portions, and a translator for transforming the measured light intensities for each of the one or more portions into hyperspectral traces each representing a spectral power distribution. The translator further transforms the hyperspectral traces into one or more device-independent representations of color.12-03-2009
20090152454METHOD AND APPARATUS FOR AUTOMATED SPECTRAL CALIBRATION - The disclosure generally relates to a method and apparatus for automated spectral calibration of a spectroscopy device. In one embodiment, the disclosure relates to a method for simultaneous calibration and spectral imaging of a sample by: simultaneously illuminating the sample and a calibrant with a plurality of illuminating photons; receiving, at the spectrometer, a first plurality of photons collected from the sample and a second plurality of photons collected from the calibrant; forming a calibrant spectrum from the first plurality of collected photons and a sample spectrum from the second plurality of collected photons; comparing the calibrant spectrum with a reference spectrum of the calibrant to determine a wavelength-shift in the calibrant spectrum; applying the wavelength-shift to the sample spectrum to obtain a calibrated sample spectrum.06-18-2009
20080308719Shielded Source Detection and Activity Correction System - The method of analyzing the measured radiation spectra to estimate the identified nuclide activities using a designated efficiency calibration based on average expected geometry and using spectral characteristics to flag significant shielding that would otherwise skew said nuclide activities (FIG. 12-18-2008
20100282958METHOD FOR OPERATING AN FTIR SPECTROMETER, AND FTIR SPECTROMETER - An FTIR (Fourier transformation infrared) spectrometer is disclosed, wherein a validation/calibration of the spectrometer can be carried out in cyclically recurring intervals. Using at least two temporarily available gases, a reference spectrum with a zero gas and an absorption spectrum with a calibration gas are recorded. Substitute gases can be used during validation of the spectrometer as gas components, the substitute gases simulating actual measured gas components with respect to metrological properties.11-11-2010
20100294922Automated calibration methodology for VUV metrology system - A calibration pad having multiple calibration sites is provided. A particular calibration site may be utilized until that particular site has been determined to have become unacceptable for further use, for example from contamination, in which case the calibration processes may then move to use a different calibration site(s) on the calibration pad(s). A variety of techniques may be utilized to provide the determination that a site is no longer acceptable for use. Movement may thus occur over time from site to site for use in a calibration process. A variety of criteria may be established to determine when to move to another site. Though the designation of a site as “bad” may be based upon measured reflectance data, other criteria may also be used. For example, the number of times a site has been exposed to light may be the criteria for designating a site as bad. Alternatively the cumulative exposure of a site may be the criteria. Further, the plurality of calibration sites that are provided on the single calibration pad may be pre-evaluated so as to initially screen out unacceptable calibration sites prior to use. The techniques provided may be utilized in calibration processes which utilize a single calibration sample or processes which require a plurality of calibration samples.11-25-2010
20080210853Medical apparatus and procedure for positioning a patient in an isocenter - A medical device, in particular a radiation therapy device, includes both an examination table that can be positioned at an isocenter and an optical coordinate display system. The optical coordinate display system has at least one radiation source, in particular a laser emitter, that is intended for emitting a test beam. Simplified and more-objective checking of the positioning accuracy of the examination table is effected via a test body for beam detection. The test body includes at least one photoelectric line, constructed of a row of photoelectric cells, the position of the line being coordinated with that of the examination table.09-04-2008
20080245957TUNING AN ION IMPLANTER FOR OPTIMAL PERFORMANCE - An approach that tunes an ion implanter for optimal performance is described. In one embodiment, there is a system for tuning an ion implanter having multiple beamline elements to generate an ion beam having desired beam properties. In this embodiment, the system comprises a beamline element settings controller configured to provide beamline element settings for generating the desired beam properties. A tuning model correlates the beamline element settings with beam properties. A calibration component is configured to calibrate the tuning model in response to a determination that beam properties measured from using the tuned beamline element settings differs from the determined tuned beamline element settings.10-09-2008
20080203284Method For Simultaneous Calibration of Mass Spectra and Identification of Peptides in Proteomic Analysis - The invention relates to a mass spectrometry calibration system that may be performed in real-time using the information contained within a sample without the addition of specific calibrants. When applied to a sample, such as a proteomic sample, the calibration system may identify the exact masses of peptides in the sample. The system involves the use of mathematical algorithms that iteratively estimate the error in the measurement and update the calibration parameters accordingly; thereby resulting in peptide mass identification.08-28-2008
20110068261METHOD AND APPARATUS FOR ON-LINE WEB PROPERTY MEASUREMENT - Web measurement system monitors properties of a web during manufacture without chopping measuring radiation during web measurement. A single chop is performed at each sheet edge or every n03-24-2011
20100282957Ion Population Control in a Mass Spectrometer Having Mass-Selective Transfer Optics - Methods for operating a mass spectrometer having at least one component having mass-dependent transmission, comprising: injecting a first sample of ions having a first mass range into an ion accumulator for a first injection time under first operating conditions suitable for optimizing transmission of ions of the first range; acquiring a full-scan mass spectrum of the first sample of ions; selecting ion species having a second mass range different than the first range; calculating a second injection time, the second injection time suitable for injecting a population of the selected ion species into the ion accumulator under second operating conditions suitable for optimizing transmission of ions of the second range; injecting a second sample of ions having the selected ion species into the ion accumulator for the second injection time under the second operating conditions; and acquiring a mass spectrum of ions derived from the selected ion species.11-11-2010
20110133065Standard Member for Correction, Scanning Electron Microscope Using Same, and Scanning Electron Microscope Correction Method - Disclosed is a standard specimen, used with an electron microscope to correct the magnification with high precision. A standard member used for correction corrects a scanning electron microscope that measures a pattern within an observation region based on information about the secondary electrons generated by scanning incident electron lines on the observation region on a measurement specimen, or information about the reflected electron intensity. The standard member has a first pattern region that corrects the magnification and that comprises a concavo-convex pattern (line/space pattern) in the cross section of a multilayer film that has been laminated, and a second pattern region near the first pattern at almost the same height that does not contain a pattern with the same periodicity as the pattern pitch size of the first region and that is used for beam adjustment.06-09-2011
20110133064TIME-DOMAIN METHOD AND APPARATUS FOR DETERMINING THE DEPTH AND CONCENTRATION OF A FLUOROPHORE IN A TURBID MEDIUM - Methods and apparatuses for determining the depth and concentration of fluorophores in a turbid medium are disclosed. The method advantageously provides for a rapid estimation of the depth of the flurophore using characteristics of a temporal point spread function. The concentration of the flurophore can be determined using the method of the present invention by combining a calculated depth of the flurophore with a measurement of the intensity of the emitted fluorescence. The intensity can be accurately measured by the apparatus disclosed herein which combine back-reflection and trans-illumination geometries for the source of light injecting and detection.06-09-2011
20110253886X-Ray Detector Comprising A Directly Converting Semiconductor Layer And Calibration Method For Such An X-Ray Detector - An X-ray detector includes a directly converting semiconductor layer for converting an incident radiation into electrical signals with a band gap energy characteristic of the semiconductor layer, and at least one light source for coupling light into the semiconductor layer, wherein the generated light, for the simulation of incident X-ray quanta, has an energy above the band gap energy of the semiconductor layer. In at least one embodiment, it includes at least one evaluation unit for calculating an evaluation signal from the electrical signals generated when the light is coupled into the semiconductor layer, and at least one calibration unit for calibrating at least one pulse discriminator on the basis of the evaluation signal. This provides the prerequisites for a rapidly repeatable calibration of the X-ray detector taking account of the present polarization state without using X-ray radiation. At least one embodiment of the invention additionally relates to a calibration method for such an X-ray detector.10-20-2011
20110089317Polarization Standards for Microscopy - The present invention describes the development of thin film calibration strips for microscopy/spectroscopy systems and a simple method/routine to conduct instrument calibration using partially (uniaxially) oriented strip to calibrate microscopy system without the prior knowledge of exact polarization of the strip. The invention describes results from studies including a styryl derivative (LDS 798) embedded in poly(vinyl alcohol) (PVA) film. These films were progressively stretched up to 8 folds. Vertical and horizontal components of absorptions and fluorescence were measured and dichroic ratios were determined for different film stretching ratios. The stretched films have high polarization values for isotropic excitation. The isotropic and stretched PVA films doped with LDS 798 can be used as etalons in near infra red (NIR) spectroscopic measurements. The high polarization standards of the present invention have applications in NIR imaging microscopy where they can be used for correcting for instrumental factor in polarization measurements.04-21-2011
20110089316IN-LINE IMAGE SENSOR IN COMBINATION WITH LINEAR VARIABLE FILTER BASED SPECTROPHOTOMETER - A photosensitive apparatus including a full width array of photosensors and a first photosensor chip. The first photosensor chip including a linear array of photosensors having a plurality of pixels arranged in a long direction and a linear variable filter adapted to transmit at least ten unique bandwidths of wavelengths of light along a length of the linear variable filter where the linear variable filter is fixedly secured to the linear array. Each respective pixel receives a unique bandwidth of wavelengths of light as a light passes through the linear variable filter and the length is aligned with the long direction. The full width array of photosensors is arranged perpendicular to a process direction of a printing device.04-21-2011
20110024612QUANTUM DOT BASED RADIATION SOURCE AND RADIOMETRIC CALIBRATOR USING THE SAME - In one embodiment, a quantum dot based radiation source includes a housing having a wall defining a cavity therein, a plurality of quantum dots disposed on an inner surface of the wall of the housing, and a radiation excitation source in optical communication with the housing and configured to output radiation to excite the plurality of quantum dots to emit radiation in a desired wavelength range. The quantum dot based radiation source can be used in a calibration system or calibrator, for example to calibrate a detector.02-03-2011
20110168878METHOD AND APPARATUS FOR EMPIRICAL DETERMINATION OF A CORRECTION FUNCTION FOR CORRECTING BEAM HARDENING AND STRAY BEAM EFFECTS IN PROJECTION RADIOGRAPHY AND COMPUTED TOMOGRAPHY - Methods for empirical determination of a correction function for correcting beam hardening and stray beam effects of water-equivalent tissue in projection radiography or computed tomography using an imaging detector, and apparatuses for implementing the same are disclosed. The projection values obtained from the logarithmic values of the detector signals are corrected, the corrected projection values being represented by a correction function dependent on the tube voltage applied during the X-ray projection recording, the coefficients of which function are determined from a single calibration scan on an object-like calibration phantom made of water-like material.07-14-2011
20110095172Self-Adaptive Tuning Of Gamma Camera - An improved system and method for tuning individual sensors (e.g., photomultiplier tubes) of a multi-sensor imaging system such as e.g., a gamma camera having an array of photo-multiplier tubes is provided that produces a uniform response over the entire system. Individual sensors of a multi-sensor imaging system are tuned based explicitly or implicitly on gain characteristics of individual sensors of the multi-sensor imaging system so as to produce a uniform response over the system.04-28-2011
20100059666Methods of Calibrating and Operating an Ion Trap Mass Analyzer to Optimize Mass Spectral Peak Characteristics - A method for calibrating an ion trap mass spectrometer is disclosed. The method includes steps of identifying a phase (defined by the RF trapping and resonant ejection voltages) that optimizes peak characteristics, and then determining, for each of a plurality of calibrant ions, an optimal resonant ejection voltage amplitude when the ion trap is operated at the identified phase. The resonant ejection voltage applied to the electrodes of the ion trap may then be controlled during analytical scans in accordance with the established relationship between m/z and resonant ejection voltage amplitude.03-11-2010
20110260044NEUTRON POROSITY DOWNHOLE TOOL WITH IMPROVED PRECISION AND REDUCED LITHOLOGY EFFECTS - Systems and methods for neutron porosity well logging with high precision and reduced lithology effects are provided. In accordance with an embodiment, a downhole neutron porosity tool may include a neutron source, a neutron monitor, a neutron detector, and data processing circuitry. The neutron source may emit neutrons into a subterranean formation while the neutron monitor detects a count of neutrons proportional to the neutrons emitted. The neutron detector may detect a count of neutrons that scatters off the subterranean formation. The data processing circuitry may determine an environmentally corrected porosity of the subterranean formation based at least in part on the count rate of neutrons scattered off the subterranean formation normalized to the count rate of neutrons proportional to the neutrons emitted by the neutron source.10-27-2011
20110186721NUCLEAR LOGGING TOOL CALIBRATION SYSTEM AND METHOD - A nuclear logging tool calibration system and method. At least some of the illustrative embodiments are methods including placing a logging tool proximate to a volume to be tested (the logging tool comprising a neutron source and a gamma detector), accumulating a spectrum of gammas by the gamma detector (the gammas created responsive to neutron irradiation of the volume by the neutron source), and then adjusting gain of a photomultiplier tube of the gamma detector. The adjusting is responsive to count rate in an overflow bin of the spectrum, where the overflow bin accumulates count rate of gammas received by the gamma detector that have energy above a predetermined energy.08-04-2011
20110186720Device And Method For Particle Therapy Verification - The invention is related to the field of charged Hadron Therapy, i.e. radiation therapy using strongly interacting particles. More particularly, the invention relates to a detector and method for measuring the beam range of a charged hadron beam in a target object as well as the particle dose distribution in the target object.08-04-2011
20110147574CALIBRATION SOURCE AND METHODS FOR CALIBRATING A NUCLEAR MEDICINE IMAGING SYSTEM - Systems and methods for calibrating a nuclear medicine (NM) imaging system are provided that include an NM calibration source. The NM calibration source includes an isotope source having an energy spectrum with at least one energy peak and a fluorescence layer adjacent the isotope source creating at least one additional energy peak in the energy spectrum.06-23-2011
20100282956XY-COORDINATE COMPENSATION APPARATUS AND METHOD IN SAMPLE PATTERN INSPECTION APPARATUS - Stage orthogonal error and position errors caused by mirror distortion are reduced. A CPU 11-11-2010
20080302955TECHNIQUES FOR ION BEAM CURRENT MEASUREMENT USING A SCANNING BEAM CURRENT TRANSFORMER - Techniques for ion beam current measurement using a scanning beam current transformer are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for ion beam current measurement using a transformer. The apparatus may comprise a measurement device positioned adjacent a wafer and an ion dose control module coupled to the measurement device. The measurement device may comprise a transformer through which an ion beam passes onto the wafer. The ion dose control module may calculate ion beam current passing through the transformer and adjust dose based at least in part upon the calculated ion beam current.12-11-2008
20090194677SIMULATED DOSE CALIBRATOR SOURCE STANDARD FOR POSITRON EMISSION TOMOGRAPHY RADIONUCLIDES - A method for calibration and a calibrator source standard calibrated by the method are provided. The calibration method includes providing mock syringes, or other simulated dose container. A first of the mock syringes is filled with a short half life positron emitter. A second of the mock syringes is filled with a longer half life radionuclide set in a matrix material such as an epoxy. The activities of the two syringes can be determined, ideally in the same ion chamber, for example, against a radioactive source standard having a half life greater than the first and second radionuclides. This allows a conversion factor to be determined which can be used for a calibrator source standard formed as for the second mock syringe (i.e., with the same type of container containing the longer half life radionuclide set in a matrix material), when the calibrator source standard is used as a proxy for calibrating a calibrator for use in determining the activity of a dose container of the same configuration containing a dose of the short lived radionuclide.08-06-2009
20100181470ION BEAM ANGLE CALIBRATION AND EMITTANCE MEASUREMENT SYSTEM FOR RIBBON BEAMS - An ion beam angle calibration and emittance measurement system, comprising a plate comprising an elongated slit therein, wherein the elongated slit positioned at a rotation center of the plate and configured to allow a first beam portion to pass therethrough. A beam current detector located downstream of the plate, wherein the beam current detector comprises a slit therein configured to permit a second beam portion of the first beam portion to pass therethrough, wherein the beam current detector is configured to measure a first beam current associated with the first beam portion. A beam angle detector is located downstream of the beam current detector and configured to detect a second beam current associated with the second beam portion. The plate, the current beam detector and the beam angle detector are configured to collectively rotate about the rotation center of the plate.07-22-2010
20100163717CALIBRATION METHOD FOR CALIBRATING AMBIENT LIGHT SENSOR AND CALIBRATION APPARATUS THEREOF - A calibration method for calibrating an ambient light sensor (ALS) includes: testing the ALS by a plurality of test brightness inputs, and deriving a plurality of test ALS outputs respectively corresponding to the test brightness inputs; converting at least the test ALS outputs from an analog manner into a digital manner to generate a plurality of test ALS output values respectively; storing a test result including at least the test ALS output values; and calibrating a brightness value corresponding to a normal ALS output value according to information stored in the test result, thereby generating a calibrated brightness value.07-01-2010
20100213362RADIATION DOSIMETRY METHOD - A radiation dosimetry method and associated devices for carrying out the method are disclosed herein. More particularly, a method and associated apparatus which compensates for variations in amounts of a radiation sensitive material in a radiation dosimetry film is provided.08-26-2010
20100264301PULSED-LASER BEAM DETECTOR WITH IMPROVED SUN AND TEMPERATURE COMPENSATION - A pulsed-laser beam detector with improved sun and temperature compensation. The detector includes a plurality of photo detectors, an ambient temperature sensor, a sun exposure filter and a mirroring circuit, a microcontroller unit that includes pre-stored values in a database and an algorithm—decision logic, a time base circuit that feeds microcontroller, an adjustable gain amplifier, a threshold setting circuit, a peak detector circuit, a comparator circuit, and a noise cancellation circuit. The gain of the amplifier is adjustable in real time to predetermined values, and the gain depends on the measured values from the detectors, and temperature sensor, that are preprocessed if necessary, and compared with the values already stored in the microcontroller unit and subjected to the program logic stored in the microcontroller that determines the gain of the amplifier.10-21-2010
20120305756Spectrometer Calibration System and Method - A spectrometer calibration system and method that permits a database of spectral peak shapes to be applied as basis template functions to characterize a radiation detector is disclosed. The disclosed system/method interpolates stored arrays representing a series of spectral peak shapes at a range of specified energies to enable formation of a calibration peak shape template at any desired spectral energy level. These basis functions may be generated from analytical functions and/or empirically measured spectral data and produce output shape calibration templates that are independent of the generation method for the basis templates. The disclosed system/method acts as an abstraction layer between the method of peak shape determination and the use of the peak shape basis functions in any subsequent spectroscopic analysis, permitting rapid and inexpensive spectrometer calibration updates without the need for any embedded spectrometer software modifications.12-06-2012
20090261240CALIBRATION JIG FOR OPTICAL TOMOGRAPHIC IMAGING APPARATUS AND METHOD FOR GENERATING A CALIBRATION CONVERSION TABLE - A calibration jig allowing simple and repeatable calibration of a probe optical tomographic apparatus is disclosed. The jig includes a holding member removably attachable to an attachment section of the apparatus and a reflective surface held by the holding member. The reflective surface reflects measurement light emitted from an emitting section of the attachment section and directs reflected light back to the emitting section. If a probe of the apparatus is covered with a sheath, the jig may include a light transmitting member, which generates the same dispersion as dispersion at the sheath, between the emitting section and the reflective surface. The reflective surface may be a single reflective surface disposed within an area corresponding to twice a coherence length of the laser light with a zero path position of the reflective surface being the center of the area.10-22-2009
20110315865METAL VOLUME SOURCE CALIBRATION PHANTOM AND CALIBRATING METHOD THEREOF - A metal volume source calibration phantom includes a container, a plurality kinds of metal plates stacked up inside the container, and at least one slab of radioactive source, each of which is disposed between the adjacent metal plates and includes a plurality of radionuclides. By means of inserting different numbers of the plurality kinds of metal plates inside the container, it is capable of obtaining the metal volume source calibration phantoms with different densities. In addition, a method for calibrating the metal volume source calibration phantom is also provided, which starts by the step of providing the metal calibration phantoms with different densities by inserting different numbers of a plurality kinds of metal plates and at least one slab of radioactive source into the container, and then detecting counting efficiency with respect to the metal volume calibration phantoms having different densities by a waste curie monitor so as to establish the correlation between density and counting efficiency.12-29-2011
20100019137High Filling Flow Water Phantom - The present invention is related to a water phantom for measuring and determining the dose distribution of radiation produced by a particle beam or photon radiation beam comprising: a water tank, the water tank having a lower base and side walls; supply means for supplying water to the water tank. The water tank comprises an intermediate base that forms, together with side walls and said lower base, a closed lower tank underneath said intermediate base and an upper tank above said intermediate base, the closed lower tank being connected to the supply means and allowing the flow of water toward said upper tank through a plurality of water admission passages defined in the intermediate base to provide an unturbulent water flow within said water tank 01-28-2010
20120001064POSITRON EMISSION IMAGING DEVICE AND METHOD OF USING THE SAME - An imaging system and method of imaging are disclosed. The imaging system can include an external radiation source producing pairs of substantially simultaneous radiation emissions of a picturization emission and a verification emissions at an emission angle. The imaging system can also include a plurality of picturization sensors and at least one verification sensor for detecting the picturization and verification emissions, respectively. The imaging system also includes an object stage is arranged such that a picturization emission can pass through an object supported on said object stage before being detected by one of said plurality of picturization sensors. A coincidence system and a reconstruction system can also be included. The coincidence can receive information from the picturization and verification sensors and determine whether a detected picturization emission is direct radiation or scattered radiation. The reconstruction system can produce a multi-dimensional representation of an object imaged with the imaging system.01-05-2012
20110155900SYSTEMS AND METHODS FOR GENERATING CALIBRATION MAPS FOR NON-PIXELATED GAMMA DETECTORS - A method for calibrating a non-pixelated gamma camera is provided, wherein the method includes determining a linearity map and a uniformity map of a reference isotope; and determining a linearity map and uniformity map of another isotope. Delta maps are calculated based on the maps of the reference isotope and the maps of the other isotope. During recalibration, new maps of the reference isotope are determined, thereby enabling new maps of the other isotope to be created based on the delta maps.06-30-2011
20110155899METHOD AND APPARATUS FOR ACQUIRING RADIATION DATA - Method and apparatus for extending a count rate capability of a detector array. The method includes receiving photons at a detector array, counting the photons that are above a first energy threshold using a first counter, counting the photons that are above a different second energy threshold using a second counter, and calculating a pile-up estimate using the photon counts from the first and second counters.06-30-2011
20110155898APPARATUS AND ASSOCIATED METHODOLOGY FOR IMPROVING TIMING RESOLUTION IN GAMMA RAY DETECTION - An apparatus and associated method for gamma ray detection that improves the timing resolution is provided. A crystal of interaction in a scintillation crystal array emits scintillation light in response to interaction with a gamma ray. The scintillation light is detected by one or more photomultiplier tubes. Each photomultiplier tube that detects the scintillation light detects the light at a different time. The apparatus determines the location of the gamma ray interaction and uses the location of the interaction to generate correction times for each waveform generated by the photomultiplier tubes. The waveforms are corrected with the correction timings and combined to extract a time of arrival estimate for the gamma ray. Noise thresholding is also used to select waveforms having low noise for combination to extract the time of arrival estimate.06-30-2011
20090127450METHOD FOR THE RELATIVE MEASUREMENT OF THE FLUORESCENCE QUANTUM EFFICIENCY OF DYES IN SOLUTION - A method for measurement of relative fluorescence quantum efficiency of a dye, including: a) for at least two different concentrations of the dye in solution in a solvent, exciting the dye with electromagnetic radiation and measuring the photoluminescence of the dye that has been excited by the radiation and of the signal transmitted through the cell containing the dye; b) comparing the data measured with the photoluminescence and transmission data of a reference dye; and c) calculating the relative fluorescence quantum efficiency of the dye.05-21-2009
20120056082METHOD FOR DETERMINING CONTAMINATION OF MATERIAL USING MID-IR SPECTROSCOPY - A method of determining contamination on a material having suspected contamination includes irradiating the material having suspected contamination with infrared energy over a spectrum of wavelengths; detecting the infrared energy reflected from the material having suspected contamination over the spectrum of wavelengths; performing multivariate analysis on the spectrum of the reflected infrared energy; comparing results of the multivariate analysis with a predetermined calibration of infrared energy spectra comprising the spectrum of wavelengths collected from at least one reference material; and determining presence or absence of contamination on the material having suspected contamination based on the predetermined calibration.03-08-2012
20120205529Method of Correcting Sensitivity and Matrix Image Sensor for Implementing this Method - The invention relates to matrix image sensors, and more particularly to a method for correcting the spatial noise caused by the dispersion of the physical properties of the various pixels of the matrix. According to the invention, a signal X08-16-2012
20120012742CALIBRATION DEVICE FOR LOCATION OF CT X-RAY GENERATOR AND DETECTOR, CALIBRATION METHOD USING THE CALIBRATION DEVICE, AND CALIBRATION METHOD FOR CT SYSTEM - A calibration device for location of a CT X-ray generator and detector includes a splitting window, a splitting window bracket configured to support the splitting window, an integral bracket, and a spring including a first end connected to the splitting window bracket and a second end connected to the integral bracket.01-19-2012
20110049344DIFFRACTION PATTERN CAPTURING METHOD AND CHARGED PARTICLE BEAM DEVICE - A charged particle beam microscope device of the present invention is configured such that in a diffraction pattern obtained by radiating a parallel charged particle beam onto a sample (03-03-2011
20110049343Radiation image detector time dependent degradation determination method and apparatus - Clearly notifying that a setting error of an imaging plane of a radiation image detector is on the increase. For a radiation image detector having an imaging plane with pixels, disposed in a two-dimensional matrix, for storing charges by receiving radiation according to an amount of radiation received and used to receive radiation transmitted through the same subject each time the detector is shifted and changed in position along a predetermined shift axis, a setting error of the imaging plane, i.e., an inclination of the two-dimensional matrix with respect to the shift axis or the like is detected a plurality of times with the passage of time and, when a fluctuation range of a plurality of setting errors so detected exceeds a predetermined acceptable range, an indication or an alarm so indicating is given.03-03-2011
20110049342GAS CONCENTRATION MEASUREMENT DEVICE AND METHOD THEREOF - The present invention discloses a gas concentration measurement device and a method thereof, which are used to measure the concentration of carbon dioxide, and wherein a single-channel infrared gas detection module is used to detect a voltage signal of a gas sample. A digital-to-analog converter converts the voltage signal into an infrared signal value. A processing module calibrates the infrared signal value with a reference infrared signal value to generate a concentration of the gas sample. The initial reference infrared signal value is the voltage value of the normal carbon dioxide concentration in the atmosphere. The processing module calibrates the voltage drift of the gas concentration measurement device with the reference infrared signal value. Thereby is promoted measurement accuracy.03-03-2011
20120305757METHOD FOR CORRECTING COUNT RATE DRIFT IN A QUANTUM-COUNTING DETECTOR, AN X-RAY SYSTEM WITH A QUANTUM-COUNTING DETECTOR AND A CIRCUIT ARRANGEMENT FOR A QUANTUM-COUNTING DETECTOR - A method, a circuit arrangement and an X-ray system, in particular a CT system, are disclosed wherein, in order to correct the count rate drift of a detector for ionizing radiation having quantum-counting detector elements which include a combination of at least two counters with significantly different energy thresholds, and on the basis of previously determined functional dependencies of count rates on one another and using at least one of the counters per detector element as the reference, the count rates of the respective other counters with different energy thresholds are corrected.12-06-2012
20100084544METHOD AND APPARATUS FOR CALIBRATING OPTICAL PATH DEGRADATION USEFUL FOR DECOUPLED PLASMA NITRIDATION CHAMBERS - Methods for matching semiconductor processing chambers using a calibrated spectrometer are disclosed. In one embodiment, plasma attributes are measured for a process in a reference chamber and a process in an aged chamber. Using a calibrated light source, an optical path equivalent to an optical path in a reference chamber and an optical path in an aged chamber can be compared by determining a correction factor. The correction factor is applied to adjust a measured intensity of plasma radiation through the optical path in the aged chamber. Comparing a measured intensity of plasma radiation in the reference chamber and the adjusted measured intensity in the aged chamber provide an indication of changed chamber conditions. A magnitude of change between the two intensities can be used to adjust the process parameters to yield a processed substrate from the aged chamber which matches that of the reference chamber.04-08-2010
20110062318Multilayered Tissue Phantoms, Fabrication Methods, and Use - A method for producing a multilayer tissue phantom involves successively forming at least two layers, each layer formed by depositing a viscous flowable material over a supporting element or over a previously formed layer of the phantom supported by the supporting element, selectively redistributing the material while material is solidifying to control a thickness distribution of the layer, and allowing the material to solidify sufficiently to apply a next layer. The supporting element supports the material in 2 or 3 directions and effectively molds a lumen of the tissue. The neighbouring layers are of different composition and of chosen thickness to provide desired optical properties and mechanical properties of the phantom. The phantom may have selected attenuation and backscattering properties to mimic tissues for optical coherence tomography imaging.03-17-2011
20090230293METHOD FOR CORRECTION OF NON-UNIFORMITY IN DETECTOR ELEMENTS COMPRISED IN AN IR-DETECTOR - A method for correction of non-uniformity in signal level in different image points in an IR-camera, based on a scene being observed during movement in time of detector elements, of a camera in which the detector elements are arranged and/or of the scene, with deviating output signals for the same energy in the scene measured by different detector elements being corrected for image interference so that they provide essentially the same output signal. Micro-mechanical gyros are introduced that measure the angular velocity parallel to and perpendicular to the optical axis of the scene. The measured movement is used as an estimate for calculating the movement with a movement estimation method based on scene data. The estimated movement is coordinated with an associated image. The difference between the most recent image and the immediately preceding image or the average value of a plurality of preceding images is calculated as offset parameters. The offset parameters are updated by correction of previous offset parameters with the most recent offset parameters. The most recent image is corrected for static noise by applying the most recently produced offset parameters to the most recent image.09-17-2009
20100276579DYNAMIC RADIOACTIVE PARTICLE SOURCE - A method and apparatus for providing a timed, synchronized dynamic alpha or beta particle source for testing the response of continuous air monitors (CAMs) for airborne alpha or beta emitters is provided. The method includes providing a radioactive source; placing the radioactive source inside the detection volume of a CAM; and introducing an alpha or beta-emitting isotope while the CAM is in a normal functioning mode.11-04-2010
20100096539CALIBRATION PLATE AND CALIBRATION METHOD - A calibration plate is configured for revising an image capture apparatus of a vision measuring system. The vision measuring system includes a worktable which is configured for supporting the calibration plate. The calibration plate includes a quadrate portion. A calibration area and a zero marker are formed on the quadrate portion. The calibration area includes a plurality of regions having the same shape.04-22-2010
20120160996Device And Method For Particle Beam Production - The present invention relates to a pulsed beam particle accelerator which can be used for particle radiation therapy. More particular, a device and method are provided to control the number of particles within a beam pulse. The particle accelerator comprises means for varying the number of particles within each beam pulse of said pulsed ion beam from a minimum value to a maximum value as function of the value of a beam control parameter. For each particle irradiation the required number of particles for each beam pulse is controlled by defining a value for said beam control parameter based on calibration data.06-28-2012
20100243875WATER PHANTOM - The present invention is related to a water phantom for measuring and determining the dose distribution of radiation produced by a particle beam or photon radiation beam comprising: a water tank; means for varying the water level in said water tank; an acquisition detector positioned in a fixed position related to the water tank opposite to the beam, wherein said acquisition detector is a two dimensional detector comprising a plurality of sensors and capable of simultaneously measuring the dose in a plurality of points in an area. Subsequent measurements are performed varying each time the water level within the water tank, until the dose distribution in the entire volume of the water tank is obtained.09-30-2010
20100288915Method and apparatus for compensating infrared sensor for temperature - To improve the precision of temperature compensation in an infrared sensor and obtain a sharp image, a correction is applied to a variation in output voltage (referred to as “background infrared radiation absorption intensity distribution” below) due to intensity distribution of background infrared radiation, which is light other than the incident infrared radiation on the infrared sensor, and the temperature characteristic of each individual bolometer constituting the infrared sensor. That is, the temperature of the infrared sensor is measured as a first temperature, a correction value for the output voltage of each bolometer is found by referring to a table, which indicates the background infrared radiation absorption intensity distribution versus the temperature of the infrared sensor, as well as the first temperature, and the variation in output voltage is corrected.11-18-2010
20120160995SPECTRAL CALIBRATION METHOD AND SYSTEM FOR MULTIPLE INSTRUMENTS - Implementations of the present invention describe an apparatus for generating calibration factors for a spectral detector instrument. The calibration factors are derived from a calibration plate containing one or more spectral species in each well of the calibration plate. Each well is then exposed to an excitation source that causes the one or more spectral species in each of the wells to fluoresce. The signal response is measured and associated with each spectral species at each different well position in the calibration plate. Next, the measured signal response from each spectral species at each well position in the calibration plate is compared with a predetermined signal response for each spectral species. The results of this comparison can be used to determine a calibration factor for each well and spectral species to compensate for the difference between the measured signal response and the predetermined signal response.06-28-2012
20100207017CHARGED PARTICLE BEAM WRITING METHOD AND CHARGED PARTICLE BEAM WRITING APPARATUS - The height of selected points on the surface of a mask is measured, and if the number of measurement errors in this measurement is less than a predetermined value, an approximated curved surface for the mask surface is generated. The measurement data and height data obtained from the approximated curved surface are then compared, and if there is no point at which the difference between the measurement data and the data obtained from the approximated curved surface is greater than a predetermined threshold value, then it is determined that the reliability of the approximated curved surface is high and the height of the mask surface is corrected in accordance with this approximated curved surface.08-19-2010
20100176285RADIATION IMAGING APPARATUS, RADIATION IMAGING SYSTEM, AND CORRECTION METHOD - The invention intends to be able to perform a gain correction fully adequately. Hence, at the time of radiographing an object, a gain correction of the object image is performed based on a gain correction image (XRc07-15-2010
20120211648ON-BOARD NON-UNIFORMITY CORRECTION CALIBRATION METHODS FOR MICROBOLOMETER FOCAL PLANE ARRAYS - On-board non-uniformity correction calibration methods for a microbolometer focal plane array in a thermal camera are disclosed. The methods include performing first calculations in the processor unit of the thermal camera to generate and apply a set of coarse correction bias voltages to the detector elements. The method also includes performing calculations in the external computer based on image data collected by the thermal camera with the coarse correction bias voltages applied to the detector elements to generate a set of fine correction bias voltages. The method also includes downloading the fine correction bias voltages to the thermal camera and applying the fine correction voltages to the detector elements to establish a fine calibration of the microbolometer focal plane array.08-23-2012
20100051795Radiation detecting apparatus, radiation image capturing system,and temperature compensating method - A radiation detecting apparatus includes a radiation conversion panel for detecting the radiation which has passed through the subject and converting the detected radiation into radiation image information, a temperature sensor for detecting a temperature of the radiation conversion panel, and a sensitivity corrector for correcting at least one of a sensitivity, a dark current, a density step, and a residual image of the radiation conversion panel based on the temperature detected by the temperature sensor.03-04-2010
20100051794INFRARED SENSOR CALIBRATION SYSTEM AND METHOD - A calibration system for an infrared imaging system includes an infrared sensor having a sensor model for imaging a target having a target spectral signature. The infrared imaging system includes an atmospheric model having atmospheric spectral values. The calibration system comprises a blackbody calibration source having a calibration source spectral signature and a computer for receiving the sensor model, the target spectral signature, the calibration source spectral signature and the atmospheric spectral values. The computer predicts a target spectral signature propagation at the infrared sensor and matches the target spectral signature propagation with the calibration source spectral signature propagation to determine a blackbody calibration source temperature for radiometric calibration of the infrared sensor.03-04-2010
20100051793Method for Energy Calibration of a Pulsed Laser System - In a method of calibrating the pulse energy of a laser device which provides pulsed working laser radiation, by means of the working laser radiation, multiple test ablations, in particular multiple-pulse test ablations, are carried out on one or more test objects, each with different pulse energy. The ablation depth of each of the test ablations is measured, and then, on the basis of the measured ablation depths and a specified setpoint ablation depth, an associated setpoint pulse energy is determined and set on the laser device. According to the invention, the ablation depths are measured by means of a coherent optical interferometric measuring device.03-04-2010
20090127452METHOD AND APPARATUS FOR SELF CALIBRATING METER MOVEMENT FOR IONIZATION POWER SUPPLIES - A method of determining a relative condition of an ionizer in an ionization system includes placing the ionization system in a calibration mode, stepping the ionization system through one or more of a range of adjustments, collecting calibration data at each step and storing the calibration data in a memory, placing the ionization system in an operating mode, collecting real-time data regarding an output of the ionization system, comparing the real-time data to the calibration data and determining difference values therebetween, and using the difference values to determine the relative condition of the ionizer.05-21-2009
20090127451Devices and Methods for Calibrating Nuclear Medical and Radiological Images - In devices and methods for calibrating nuclear medical and radiological images, an apparatus may be placed in the field of view of a region of interest to be imaged. The apparatus may include a background material with an attenuation characteristic substantially similar to a region of interest of an object being imaged. The background material may include one or more radioactive material embedded in the background material such that when the device is scanned substantially at the same time as the region of interest, the apparatus is a calibration tool.05-21-2009
20100200741FLUOROPEROUSKITE RADIATION DOSIMETERS AND STORAGE PHOSPHORS - This invention provides phosphor-doped fluoroperovskite compounds that are capable of storing at least part of the energy of incident ionizing radiation and releasing at least part of the stored energy upon optical stimulation or heating. Also provided are dosimeters and radiation storage devices comprising the compounds, methods of preparing the compounds, and methods of using the compounds to determine a dose of ionizing radiation or to record and reproduce an ionizing radiation image.08-12-2010
20120312976INFRARED CAMERA CALIBRATION TECHNIQUES - Various techniques are disclosed for testing and/or calibrating infrared imaging modules. For example, a method of calibrating an infrared imaging module may include providing a plurality of temperature controlled environments. The method may also include transporting the infrared imaging module through the environments. The method may also include performing a measurement in each environment using an infrared sensor assembly of the infrared imaging module and determining a plurality of calibration values for the infrared imaging module based on the measurements.12-13-2012
20100270463APPARATUS AND METHOD FOR MEASURING DEPTH-OF-INTERACTION USING LIGHT DISPERSION AND POSITRON EMISSION TOMOGRAPHY USING THE SAME - The present invention provides an apparatus for measuring a Depth-Of-Interaction (DOI), comprising a crystal layer 10-28-2010
20120074304METHOD FOR DETERMINING AND CORRECTING THE STABILITY OF RESPONSE OF A SEMI-CONDUCTOR MATRIX DETECTOR - Techniques for controlling a stability of response of a semi-conductor matrix imager composed of pixels, including a first phase of characterizing the stability of the pixels and a second phase of correcting the signals arising from the pixels during the measurements. The pixels are classed into stable pixels and unstable pixels according to a predetermined criterion, the unstable pixels being associated individually with a stable pixel whose characteristics serve as base for correcting signals arising from the unstable pixels.03-29-2012
20120074303CALIBRATION FUNCTION FOR TIME-OF-FLIGHT MASS SPECTROMETERS WITH EXTREME MASS ACCURACY - A calibration function for time-of-flight mass spectrometers that converts ion times of flight into mass to charge ratios, takes into account not only the time of flight of a specific ionic species, but also the ion signal intensity of that ionic species. Use of the conversion function reduces nonsystematic deviations of the calculated mass values from the true mass values previously experienced in time of flight mass spectrometers.03-29-2012
20120312975ELECTRON BEAM EXPOSURE APPARATUS AND ELECTRON BEAM EXPOSURE METHOD - Main deflection regions are arranged assuming that the positions of column cells are as designed, and adjacent main deflection regions are joined together to form a joined main deflection region. Then, a corrected main deflection region is arranged by correcting the position of each of the main deflection regions based on the actual positions of the column cells. After that, whether or not each of auxiliary deflection regions contained in the joined main deflection region overlaps with the corrected main deflection region is checked in predetermined order. Then, the auxiliary deflection regions overlapping with the corrected main deflection region are arranged in the order of detection thereby to yield auxiliary deflection region data.12-13-2012
20120312974Method of calibrating a radiotherapy system - The present invention provides a method of calibrating a radiotherapy apparatus, in which a beam measurement device is accurately located with respect to the radiation beam centre. The method comprises acquiring the centre of the radiation beam at two angles of rotation, separated by 180°, and aligning a beam measurement device with the midpoint of the respective centres.12-13-2012
20120312977Arc Flash Protection System with Self-Test - An method for automatically testing an arc flash detection system by periodically or continually transmitting electro-optical (EO) radiation through one or more transmission cables electro-optically coupled to respective EO radiation collectors. A test EO signal may pass through the EO radiation collector to be received by an EO sensor. An attenuation of the EO signal may be determined by comparing the intensity of the transmitted EO signal to an intensity of the received EO signal. A self-test failure may be detected if the attenuation exceeds a threshold. EO signals may be transmitted according to a particular pattern (e.g., a coded signal) to allow an arc flash detection system to distinguish the test EO radiation from EO radiation indicative of an arc flash event.12-13-2012
20120223220Calibration Method of UV Sensor for UV Curing - A method for managing UV irradiation for treating substrates in the course of treating multiple substrates consecutively with UV light, includes: exposing a first UV sensor to the UV light at first intervals to measure illumination intensity of the UV light so as to adjust the illumination intensity to a desired level based on the measured illumination intensity; and exposing a second UV sensor to the UV light at second intervals to measure illumination intensity of the UV light so as to calibrate the first UV sensor by equalizing the illumination intensity measured by the first UV sensor substantially with the illumination intensity measured by the second UV sensor, wherein each second interval is longer than each first interval.09-06-2012
20120187284Functional Check and Variance Compensation in Mass Spectrometry - Test method checks and compensates ion yield variances in a mass spectrometer and includes feeding an eluate of a chromatographic separation to the spectrometer, continuously ad-mixing a separate target analyte solution at known concentration and constant flow rate to the eluate, injecting the mixture into the spectrometer and generating a detector signal for the mixture. A spectrogram is captured which includes an integration line and a mass-spectrographic peak of the target analyte, the integration line being a lasting background signal underlaid to the mass-spectrometric analysis of the eluate, then evaluating the spectrogram by capturing an integrated mass-spectrographic peak area above the integration line and an area which is found under the integrated peak area of the target analyte by perpendicular drop lines from the peak integration line and forming a mathematical relationship from the determined mass-spectrographic areas.07-26-2012
20120187285MEASUREMENT AND ENDPOINTING OF SAMPLE THICKNESS - A method for Transmission Electron Microscopy (TEM) sample creation. The use of a Scanning Electron Microscope (SEM)—Scanning Transmission Electron Microscope (STEM) detector in the dual-beam focused ion beam (FIB)/SEM allows a sample to be thinned using the FIB, while the STEM signal is used to monitor sample thickness. A preferred embodiment of the present invention can measure the thickness of or create TEM and STEM samples by using a precise endpoint detection method. Preferred embodiments also enable automatic endpointing during TEM lamella creation and provide users with direct feedback on sample thickness during manual thinning. Preferred embodiments of the present invention thus provide methods for endpointing sample thinning and methods to partially or fully automate endpointing.07-26-2012
20120228485MAINTENANCE METHOD OF RADIOLOGICAL IMAGE DETECTION APPARATUS - An maintenance method of a radiological image detection apparatus including: a phosphor containing a fluorescent material which emits fluorescent light when exposed to radiation and a thin-film type sensor portion which is disposed adjacent to the phosphor on a radiation incidence side and supported by the phosphor and detects fluorescent light generated in the phosphor, the maintenance method includes: regularly performing at least one of a structural noise inspection, an MTF inspection and a dark current inspection, to detect deterioration of the phosphor.09-13-2012
20120228486RADIATION DETECTOR ASSEMBLY WITH TEST CIRCUITRY - A radiation detector assembly (09-13-2012
20120228484METHOD FOR IMPROVED CORRECTION OF SIPM NON-LINEARITY IN MULTPLEXED RADIATION DETECTORS - A system and method for determining correction factors used to determine energy of an event detected by a gamma ray detector having nonlinear photosensors arranged over a scintillation array of crystal elements, the gamma ray detector using optical multiplexing or analog electronic multiplexing. The method includes acquiring, for each nonlinear photosensor, a signal value generated by the nonlinear photosensor in response to receiving scintillation light emitted by a crystal in the array of crystal elements in response to arrival of a gamma ray; and determining a relative position of the event, the relative position being one of a predetermined number of cell locations, the predetermined number of cell locations being greater than a number of crystal elements in the array of crystal elements; and determining, for each cell location, a correction factor based on an average total signal value and a predetermined energy value of the gamma ray.09-13-2012
20100237230CALIBRATION SUBSTANCES FOR ATMOSPHERIC PRESSURE ION SOURCES - A Mixture of substances is provided for precise calibration of the mass scale of mass spectrometers equipped with ion sources that operate at atmospheric pressure (AP) with ionization of the analyte molecules, for example by APCI (chemical ionization), or by APPI (photoionization), often at high temperatures of up to 470° C. Out of physical reasons, the mass scale of any time-of-flight mass spectrometer deviates in the lower mass range from the theoretical relation between charge-related mass m/z and flight time t. A closely spaced arrangement of low mass calibration reference points is necessary if high mass accuracy is to be achieved for substances of low molecular weight. APCI and APPI sources are increasingly used in time-of-flight mass spectrometers with orthogonal ion injection (OTOF MS) for the detection of non-polar and weakly polar compounds, in particular, for analyte molecules with relatively low molecular weights. Calibration substances in solutions that are easily handled, nontoxic, stable at the high temperatures involved, will accept both positive and negative ionization, and supply enough reference points for calibration in the mass range up to 500 daltons. Mixtures of saturated fatty acids dissolved in toluene may be used. For photoionization, also mixtures of phenyl and naphthyl fatty acids.09-23-2010
20110121164Radiation Beam Analyzer And Method - A radiation beam analyzer for measuring the distribution and intensity of radiation produced by a Cyberknife®. The analyzer employs a relative small tank of water into which a sensor is placed. The distance between the sensor and the radiation source is not varied. There are two methods to maintain the SAD (source to axis distance) constant. A first method maintains the position of detector fixed, utilizing a holder designed to retain the detector, and raises or lowers the small tank of water. A second method moves the detector up or down with a raising and lower mechanism in one direction and synchronically moves the small tank of water in the opposite direction with another raising and lowering mechanism. The second method also keeps the SAD constant. These methods position the detector relative to the radiation source to simulate the location of a malady within a patient's body.05-26-2011
20110121163METHOD, APPARATUS AND COMPUTER-READABLE MEDIUM ESTIMATING ENERGY RESPONSE FUNCTION OF ENERGY RESOLVING X-RAY DETECTOR - Disclosed are an energy response estimating apparatus, a method and computer-readable medium thereof that estimates an energy response function determined by a substance constituting a detector and physical parameters, and corrects multi-energy image information by using the estimated energy response function. The energy response estimating apparatus includes an emitting unit to emit multiple polychromatic X-rays having different energy levels to an object, a sensing unit to calculate a spectrum measurement value of a detector by counting photons from the multiple polychromatic X-rays that pass through the object, and an estimating unit to estimate an energy response function based on the calculated spectrum measurement value of the detector.05-26-2011
20120261563CONTAMINATION INSPECTION - A method of forming a standard mask for an inspection system is provided, the method comprising providing a substrate within a chamber, and providing a tetraethylorthosilicate (TEOS) precursor within the chamber. The method further includes reacting the TEOS precursor with an electron beam to form silicon oxide particles of controlled size at one or more controlled locations on the substrate, the silicon oxide particles disposed as simulated contamination defects.10-18-2012
20130020477ULTRAVIOLET RADIATION MEASUREMENT SENSOR - A method for measuring radiation of energy photons, such as ultraviolet radiation, on a surface, may include programming at least one transistor by at least transmitting an electric charge to it. The method may further include measuring an electrical quantity of the at least one transistor receiving radiation of energy photons and estimating, based on this electrical quantity, an amount of radiation received.01-24-2013
20130020478RADIATION CONTROL APPARATUS AND METHOD FOR ACQUIRING CORRECTION DATA FOR AN IMAGING DEVICE - A radiation control apparatus includes a determination unit configured to determine dose values of exposures to a radiation detector for acquiring correction images, corresponding to measured input-output characteristics of the radiation detector, and a acquisition unit configured to acquire correction data for the input-output characteristics of the radiation detector, based on the correction images acquired from the detector exposed at the determined dose values.01-24-2013
20120318967TERAHERTZ WAVE MEASURING APPARATUS AND MEASUREMENT METHOD - The present invention provides a terahertz wave measuring apparatus and measurement method capable of improving the quantitativeness of obtained frequency spectrum information. In a measurement method in which a terahertz wave measuring apparatus is used, the terahertz wave measuring apparatus measures a time waveform of a terahertz wave relating to a calibration sample whose shape of a calibration spectrum is already known and obtains a measurement spectrum by transforming the time waveform. The calibration spectrum and the measurement spectrum are compared, and, on the basis of results of the comparison, time intervals of measurement data that form a time waveform are adjusted in order to calibrate the terahertz wave measuring apparatus.12-20-2012
20110220783METHODS AND SYSTEMS FOR CALIBRATING A NUCLEAR MEDICINE IMAGING SYSTEM - Methods and systems for calibrating a nuclear medicine imaging are provided. One method includes acquiring spatially determined non-uniform radiation flux information from a calibration scan of a calibration source using a gamma camera having an attached non-parallel-hole collimator. The method further includes determining a measured non-uniform count density profile from the acquired non-uniform radiation flux information. The method also includes creating a gamma camera uniformity correction map derived from (i) the measured non-uniform count density profile and (ii) a modeled or calculated non-uniform count density profile for calibrating the NM imaging system.09-15-2011
20120080586Process for testing a laser device - A process is proposed for testing a laser device that has been set up to emit pulsed focused laser radiation, the focal position of which is adjustable both in and across the direction of propagation of the laser radiation. The laser device includes a contact element that is transparent to the laser radiation, with an abutment surface for abutment of an object to be machined. Within the scope of the process, a test object that is transparent to the laser radiation at least in a machining region is applied onto the abutment surface of the contact element. Then laser radiation is beamed into the test object bearing against the abutment surface and in the process the focal position is moved in accordance with a predetermined test pattern, in order to generate enduring machining structures in the test object.04-05-2012
20110240838AMMONIUM SALTS AS IMS POSITIVE MODE CALIBRANTS/REACTANTS - An ion mobility spectrometer includes a permeation tube, ammonium sulfate disposed within the permeation tube in solid form, and a heating device configured to heat the permeation tube so as to create ammonia gas to flow within the permeation tube. When an array of sensors of the IMS is placed in contact with an unknown sample, the ammonia operates as a reactant so as to provide detection signals that are provided to a processor unit of the IMS, so as to identify the unknown sample based on its ion mobility spectrum.10-06-2011
20100230584Method for setting an operating parameter of a particle beam device and a sample holder for performing the method - A method for adjusting an operating parameter of a particle beam device and a sample holder, which is suitable in particular for performing the method are provided. An adjustment of an operating parameter of a particle beam device is possible without transfer of the sample holder out of the particle beam device. A reference sample is placed in a first sample receptacle, so that in ongoing operation of the particle beam device, the sample holder need only be positioned in such a way that the reference sample is bombarded and measured with the aid of a particle beam generated in the particle beam device.09-16-2010
20120091327SELF-CALIBRATING, HIGHLY ACCURATE, LONG-LIVED, DUAL RHODIUM VANADIUM EMITTER NUCLEAR IN-CORE DETECTOR - The present invention provides a method and an apparatus for calibrating a first self-powered neutron detector for long term use in a nuclear reactor core with a second self-powered neutron detector, where the emitter material of the second self-powered neutron detector has a neutron absorption cross-section that is greater than the neutron absorption cross-section of the first emitter material for the first self-powered neutron detector.04-19-2012
20080302956OFFSET COMPENSATION SCHEDULING ALGORITHM FOR INFRARED IMAGERS - A method of scheduling offset compensation for an infrared (IR) imaging system to maintain good image quality. The method includes a scheduling algorithm for automatic offset compensation. The scheduling algorithm automatically adjusts periods between offset compensations based on the measurement of drift of the focal plane array (FPA) pixel levels. As a result, the periods are adjusted both when the camera is thermally stable and when the camera is undergoing an internal thermal change.12-11-2008
20130009047Energy Correction for One-To-One Coupled Radiation Detectors Having Non-Linear Sensors - Systems and methods for correcting output signals from non-linear photosensors, specifically silicon photomultipliers (SiPMs). SiPMs are used in a PET detector to readout light emissions from LSO scintillator crystals. The non-linear output of the SiPM can distort and compress the energy spectrum which is crucial in PET imaging. The non-linearity effect for inter-crystal scattered events can place an energy event outside of the PET detector energy window, resulting in a rejected event. Systems and methods to correct the SiPM non-linearity for inter-crystal scattered events, so as to be able to obtain the proper energy event and produce an accurate medical image, are disclosed.01-10-2013
20110133066PATTERN INSPECTION DEVICE AND METHOD - An inspection apparatus and method are provided capable of suppressing electron beam focus drifts and irradiation-position deviations caused by sample surface charge-up by irradiation of an electron beam during micropattern inspection to thereby avoid false defect detection and also shorten an inspection time. The apparatus captures a plurality of images of alignment marks provided at dies, stores in a storage device deviations between the central coordinates of alignment mark images and the coordinates of the marks as a coordinate correction value, measures heights at a plurality of coordinates on the sample surface, captures images of the measured coordinates to perform focus adjustment, saves the relationship between such adjusted values and the sensor-measured heights in the storage as height correction values, and uses inspection conditions including the image coordinate correction values saved in the storage and the height correction values to correct the image coordinates and height of the sample.06-09-2011
20130020476Method of stitching and linearization of multisensor detectors gain characteristics - Digital detectors of X-ray image intended for stitching and linearization of gain characteristics of independent sensors of multisensor detectors are disclosed. The technical result is the development of methodology of stitching and linearization of multisensor detectors gain characteristics under the conditions of non equal irradiance (the use of radiation source with flat X-ray (light) field is not required). The method is based on calculation of LUT functions for conversion of output signals intensity of detector sensors. As a result of application of the stated conversion LUT functions the sensors gain characteristics are received which are the same and linear within the precision of measurements. Calculation of stitching LUT functions employs the availability of non-equal X-ray (light) field slowly changing along the area of detector. The responses of any two adjacent sensors with the same gain characteristics shall have similar values near the joint of these sensors.01-24-2013
20080251708Method of Determining Sensitivity of Radiation Detector - Each of the detectors of a detector inventory are subjected to an identical flat field exposure to generate a radiation mage in each of the detectors, from the radiation images the overall field distribution is determined and neutralized in the images, next the sensitivity is determined.10-16-2008
20080224030NON-CONTACT THERMAL IMAGING SYSTEM FOR HETEROGENEOUS COMPONENTS - A non-contact thermal imaging system for heterogeneous materials, the system including a translating head that is parallel to a reference plane; an infrared probe connected to data acquisition electronics in order to collect first data, the first data being nitrated intensity readings; a transmitter for sending one or more signals to a sample; and a receiver for receiving the one or more signals from the sample; wherein the transmitter and the receiver measure an intensity of the one or more signals reflected off the sample as second data; and wherein the first data and the second data are combined via software to calculate a temperature at every point on the sample.09-18-2008
20130200255THREE-DIMENSIONAL MAPPING USING SCANNING ELECTRON MICROSCOPE IMAGES - A method includes irradiating a surface of a sample, which is made-up of multiple types of materials, with a beam of primary electrons. Emitted electrons emitted from the irradiated sample are detected using multiple detectors that are positioned at respective different positions relative to the sample, so as to produce respective detector outputs. Calibration factors are computed to compensate for variations in emitted electron yield among the types of the materials, by identifying, for each material type, one or more horizontal regions on the surface that are made-up of the material type, and computing a calibration factor for the material type based on at least one of the detector outputs at the identified horizontal regions. The calibration factors are applied to the detector outputs. A three-dimensional topographical model of the surface is calculated based on the detector outputs to which the calibration factors are applied.08-08-2013
20130200256Mass Spectroscope and its Adjusting Method - In order to enable the mass spectroscope to reduce the operation load of the adjustment of the amplitude difference, and to reduce the increase in power consumption caused by the difference between the resonance frequency and the drive frequency, the resonance circuit unit of the ion trap section is configured to control the amplitude difference adjustment section of the resonance circuit unit to adjust that the amplitude difference between the high-voltage RF signals decreases, and controls the frequency synchronizing section of the resonance circuit unit to adjust that the resonance frequency of the resonance circuit is aligned with the drive frequency of the RF signal source, on the basis of the information about the amplitude difference between the high-voltage RF signals and the resonance frequency of the resonance circuit unit, which have been measured by a resonance frequency/amplitude difference measuring unit.08-08-2013
20130119245METHOD AND APPARATUS FOR ESTIMATING A DOWNHOLE FLUID PROPERTY USING A CHARGED PARTICLE DENSITOMETER - An apparatus, system and method are disclosed for estimating a property of a fluid downhole, the apparatus including but not limited to a carrier that is conveyable in a borehole; a test cell carried by the carrier for capturing a fluid downhole; a fluid channel immersed in the fluid downhole, the fluid channel having a first wall and a second wall, wherein the first wall faces the second wall; at least on charged particle source placed at location along the first wall of the fluid channel; and at least one charged particle detector placed at a location along the second wall of the fluid channel, wherein the at least one radioactive detector is in positioned to be in particle communication with the at least one of the charged particle source.05-16-2013
20080203285Charged particle beam measurement equipment, size correction and standard sample for correction - Correction of widths obtained by measurement of a sample with the use of a scanning electron microscope is executed with greater precision. Use is made of a standard sample 08-28-2008
20100288916PHANTOMS AND METHODS FOR VERIFICATION IN RADIOTHERAPY SYSTEMS - Methods and phantoms for verification in radiotherapy systems. A phantom for verification in a radiotherapy system may include a body to support a detector surface for obtaining a panoramic image of individual radiation beams in the radiotherapy system. The detector surface may be positioned in an intermediate region between the one or more sources and a target isocenter of the radiotherapy system. The detector surface may at least partially surround the target isocenter.11-18-2010
20120273667METHOD AND APPARATUS FOR CHEMICAL AND BIOLOGICAL SAMPLE SEPARATION - The present invention describes a method and apparatus for separating chemical and/or biological samples based on selective ion-molecular interactions in the gas phase. A chemical modifier is added to the drift gas that interacts selectively with a targeted molecule in at least one component of the sample in a drift tube. The component may be impurities and/or interferences in the sample whereby the chemical modifier enhances sample resolution by shifting the components drift times. In addition, reagents can be added to the sample prior to, during, or after ionization to form a complex with selected components in the sample. In addition, one or more internal and/or external standard can also be added to the sample as a calibration for the measurement.11-01-2012
20120273666METHOD AND DEVICE FOR CHECKING AN IRRADIATION PLANNING SYSTEM, AND IRRADIATION SYSTEM - The invention relates to a method for checking an irradiation installation in which a dose distribution is deposited in a target object by means of a treatment beam, said method comprising the following steps: an irradiation planning data record optimised for the irradiation of a moving target volume is provided; a movement signal that reproduces a movement of the target volume is provided; a phantom is irradiated, said phantom being formed for detecting a dose distribution deposited in the phantom during or after the irradiation, using the control parameters stored at the irradiation planning data record and the movement signal; a dose distribution deposited in the phantom is determined; a dose distribution to be expected is calculated on the basis of parameters that are related to the control of the irradiation installation during the irradiation; and the determined dose distribution deposited in the phantom is compared to the calculated dose distribution to be expected. The invention also relates to a corresponding device and an irridation installation comprising such a device.11-01-2012
20120273665SYSTEMS, DEVICES AND METHODS RELATED TO CALIBRATION OF A PROTON COMPUTED TOMOGRAPHY SCANNER - Disclosed are systems, devices and methodologies related to calibration of an ion based imaging apparatus such as a proton computed tomography scanner. In some implementations, energy degrader plates having known water-equivalent thickness (WET) values can be introduced to an ion beam to introduce different energy degradation settings. Energy detector responses to individual ions subject to such energy degradation settings can be obtained. Such responses can be normalized and correlated to water-equivalent path lengths (WEPL) of the ions based on the known WET values. Such calibration utilizing degrader plates can be performed relatively quickly and can yield accurate WEPL values that facilitate estimation of, for example, a CT image based on relative stopping power of an object.11-01-2012
20110233394METHOD OF CALIBRATING AN X-RAY DETECTOR - The general field of the invention includes methods of calibrating X-ray detection systems, the systems including at least one X-ray generator and a detection array having a matrix of detecting semiconductor pixels and processing and calibration electronics. The calibration method includes, for all or some of the pixels: operating the X-ray generator at its nominal high voltage, the generator being placed opposite the detector; counting, using the processing and calibration electronics, the pulses emitted by each pixel through the effect of the radiation produced by the generator; establishing, for each pixel, an amplitude distribution for the counted pulses; applying, to each amplitude distribution, a statistical indicator so as to identify a particular amplitude, this particular amplitude then corresponding to the energy corresponding to said statistical indicator; and adjusting, using the processing and calibration electronics, calibration parameters for each pixel, taking account of the energy-amplitude relationship thus established.09-29-2011
20100314535SOURCE COMPENSATED FORMATION DENSITY MEASUREMENT METHOD BY USING A PULSED NEUTRON GENERATOR - A downhole instrument for estimating density of sub-surface materials includes: a neutron source, a source monitoring detector, a near detector and a far detector. Each of the detectors may be coupled to an electronics unit adapted for receiving a detection signal from each of the detectors and compensating the detection signal for at least one of the near detector and the far detector according to the detection signal of the source monitoring detector. A method for estimating density is provided.12-16-2010
20100314534Refined optical system - Selected scene regions are imaged. I12-16-2010
20110272568CALIBRATION METHOD - The invention relates to a method for calibrating a measurement tool for measuring the radiation in a radiation system, such as a radiation therapy system. The measurement tool, including a holder and at least one photodiode element, is adapted to be mounted in a positioning unit of the radiation system. The radiation sensitive volume of the photodiode element is embedded in a light transparent coating transparent for, for instance, light in the visible spectrum. Thereby, the position of the sensitive volume can easily be determined or calculated with high accuracy relatively the holder on which the photodiode element is arranged, from which the position of the sensitive volume can be determined or calculated in relation to the positioning unit of the radiation system. The invention also relates to a calibration system for performing the calibration method and a measurement tool for use in the calibration system.11-10-2011
20110272567Throughput Enhancement for Scanned Beam Ion Implanters - Some aspects of the present disclosure increase throughput beyond what has previously been achievable by changing the scan rate of a scanned ion beam before the entire cross-sectional area of the ion beam extends beyond an edge of a workpiece. In this manner, the techniques disclosed herein help provide greater throughput than what has previously been achievable. In addition, some embodiments can utilize a rectangular (or other non-circularly shaped) scan pattern that allows real-time beam flux measurements to be taken off-wafer during actual implantation. In these embodiments, the workpiece implantation routine can be changed in real-time to account for real-time changes in beam flux. In this manner, the techniques disclosed herein help provide improved throughput and more accurate dosing profiles for workpieces than previously achievable.11-10-2011
20110303835Method For Determining Radiation Attenuation By An Examination Object In A Positron Emission Tomography Scanner - A method is disclosed for determining radiation attenuation by an examination object in a positron emission tomography scanner. In at least one embodiment of the method, an initial segmentation of the examination object is fixed, wherein an attenuation coefficient is assigned to each segment of the segmentation. Furthermore, raw radiation data about the examination object arranged in the positron emission tomography scanner is acquired, and a correction factor is automatically determined for each pixel with the aid of an optimization method, in which the probability of the acquired raw radiation data is maximized taking into account the segmentation and the attenuation coefficients assigned to the segments. A statistical parameter of the correction factors is then determined for each segment and the segmentation is corrected by subdividing a segment as a function of the statistical parameter determined for the segment. Finally, a segment correction factor is determined for each segment from the correction factors assigned to the segment and the attenuation coefficients assigned to the segments are corrected as a function of the segment correction factors.12-15-2011
20110303834Apparatus and Method for Replicating Liquid Blends and Identifying the Ratios of Their Liquid Ingredients - Disclosed herein are methods and an apparatus to determine and replicate unknown ratios of original target liquid blends, such as hydrocarbon fuel blends or contaminants, by using an in-process fluorescence-monitored procedure. The method relies on trial-and-error mixing of the liquid ingredients into a single container. At the end of the trial-and-error procedure the formed blend becomes an exact replica of the target blend. The method can also be used to build calibration curves without employing sets of previously prepared standard solutions.12-15-2011
20110309242Radiation-activated Fiducial Markers for Organ Tracking - A system may include transmission of an activation beam to one or more non-radioactive elements disposed in a patient volume, wherein the elements become radioactive in response to the activation beam, detection of radiation emitted by the one or more now-radioactive elements, determination of respective locations of the one or more now-radioactive elements based on the detected radiation, and transmission of a treatment beam to the patient volume based on the respective locations.12-22-2011
20130187034ANALYSIS METHOD, ADHESIVE TAPE, AND PEN - There is provided an analysis method including the steps of forming a layer including a calibration reagent, that can generate ions by using a DART ion source apparatus, in a predetermined area of a sample, and performing mass spectrometry on the ions generated from an area of the sample including the layer by using DART or DESI while moving the sample having the layer formed therein.07-25-2013
20130193317METHODS OF USING HALOGENATED PEPTIDES AS INTERNAL STANDARDS FOR LIQUID CHROMATOGRAPHY-MASS SPECTROMETRY - Methods of using halogenated peptides as internal standards for liquid chromatography-mass spectrometry, and novel halogenated peptides useful for the same, are disclosed. In particular, methods of using halogenated peptides as internal standards in proteomic analyses, as well as methods of using halogenated peptides to conduct quality control assessments of and/or to calibrate liquid chromatography-mass spectrometry systems are disclosed.08-01-2013
20120018627DIGITAL RADIOGRAPHIC IMAGING ARRAYS WITH REDUCED NOISE - Exemplary embodiments provide a radiographic array, flat detector panel and/or X-ray imaging apparatus including the same and/or methods for using the same or calibrating the same. Exemplary embodiments can reduce or address noise occurring in the optically sensitive pixels that is temporally not related to image data detected by the optically sensitive pixels or dark reference frames detected by the optically sensitive pixels. Exemplary embodiments can include a capacitive element in a calibration pixel coupled between a row conductive line and a column conductive line in an imaging array.01-26-2012
20130193316RADIATION DOSIMETRY METHOD - A radiation dosimetry method and associated devices for carrying out the method are disclosed herein. More particularly, a method and associated apparatus which compensates for variations in amounts of a radiation sensitive material in a radiation dosimetry film is provided.08-01-2013
20130206971OPTICAL MEASUREMENT SYSTEM, OPTICAL MEASUREMENT APPARATUS, CALIBRATION MEMBER, AND CALIBRATION METHOD - An optical measurement system including: a probe including a plurality of light-receiving fibers and an irradiation fiber; a calibration member including a frame member and a fluorescent body provided in an inner side of the frame member to emit fluorescent light using excitation light, the calibration member being used while the fluorescent body surface faces a leading end of the probe; a fluorescence excitation light source that supplies excitation light to the irradiation fiber; a measurement unit that measures each light output from a plurality of the light-receiving fibers; and a calibration processing unit that calibrates the received light intensity between a plurality of the light-receiving fibers based on the measurement result obtained in the measurement unit by measuring light output from a plurality of the light-receiving fibers for fluorescent light from the fluorescent body emitted by irradiation with the excitation light.08-15-2013

Patent applications in class CALIBRATION OR STANDARDIZATION METHODS