Entries |
Document | Title | Date |
20080197290 | Camera-based x-ray digital image detector - Disclosed herein are camera-based x-ray digital image detectors that contain an assembly of a scintillator screen, a wide-angle optical lens or fisheye lens, and a digital image sensor. Images formed by x-ray radiation on the scintillator screen are projected onto a much smaller area image sensor through a fisheye or super-wide-angle optical lens, hence forming a highly distorted image thereon. Transparent lead-contained glasses or plastics are utilized to shield image sensor from x-ray damage. Imaging distortion and light falloff caused by the lens optics are corrected by software algorithms. Sub-millimeter resolution may be achieved with reduced design complexity and substantially lower manufacturing costs. | 08-21-2008 |
20080203312 | SCINTILLATOR PANEL AND FLAT-PANEL RADIATION DETECTOR - A scintillator panel comprising a scintillator plate containing a substrate having thereon a reflective layer, a sublayer and a scintillator layer in that order, wherein the scintillator plate is sealed with: a first protective film provided on a side of the scintillator layer; and a second protective film provided on a side of the substrate opposite the scintillator layer, wherein the first protective layer is not adhered to the scintillator layer, and the second protective layer contains an aluminum layer. | 08-28-2008 |
20080217549 | Scintillator Element, Scintillator Unit, and Radiation Detector Using the Same - A scintillator element | 09-11-2008 |
20080217550 | RADIATION IMAGE DETECTOR - A radiation image detector comprising: a scintillator panel comprising a radiation transmitting substrate having thereon a phosphor layer having a columnar crystal structure produced with a vapor deposition method; a protection cover provided at a side of the radiation transmitting substrate opposite the phosphor layer, provided that incident radiation enters through the protection cover; and a flat light-receiving element provided at a side of the radiation transmitting substrate opposite the protection cover, the flat light-receiving element comprising a plurality of light-receiving pixels arranged in a two-dimensional form and capable of converting light emitted from the scintillator panel to electricity, wherein the radiation image detector satisfies the following Formula (1): W(g)<0.31(g/cm | 09-11-2008 |
20080277588 | X-Ray Detector with In-Pixel Processing Circuits - The invention relates to an X-ray detector with an array of pixels ( | 11-13-2008 |
20080290285 | SCINTILLATION PANEL AND RADIATION DETECTOR - A scintillation panel has a support substrate to pass radiation, a light-reflecting material dispersed film which is formed flat on the support substrate, and provided with dispersed light-reflecting material particles to reflect visible light, and a scintillation layer which is formed on the light-reflecting material dispersed film, and converts an incident radiation into visible light. | 11-27-2008 |
20080290286 | SENSOR AND IMAGE PICKUP DEVICE - A sensor for detecting a received electromagnetic wave comprising a first electrode, a second electrode and an amorphous oxide layer interposed between the first electrode and the second electrode. | 11-27-2008 |
20080302970 | RADIATION RAY DETECTOR - A radiation ray detector includes an electrode substrate includes a transparent substrate, a plurality of thin film transistors and a plurality of collecting capacitors formed on the transparent substrate, respectively, an insulation layer formed on the transparent substrate including these thin film transistors and collecting capacitors, and a plurality of photoelectric conversion elements connected to respective thin film transistors and converting visible light into an electrical signal. A scintillator layer is formed on the electrode substrate. A protective layer comprises a reflective layer formed on the scintillator layer and containing a thermoplastic polymer compound and a titanium oxide powder contained therein in an amount of 70 wt % or more, an adhesive layer formed on the surface of the electrode substrate including the reflective layer, and a moisture-proof layer adhered to the adhesive layer and having a moisture transmittance of 0.5 g/m | 12-11-2008 |
20080308737 | Optical Stabilization of a Detector - The invention relates to a detector comprising a scintillator, preferably a scintillator crystal, a light detector with at least one photocathode and a photoelectrometer, preferably a photomultiplier or a hybrid photomultiplier, and a light source, preferably an LED, a laser or a laser diode. The inventive detector is characterized in that it is configured in such a manner that the light produced in the scintillator and the light produced in the light source are injected into the light detector in different sites. | 12-18-2008 |
20080308738 | STRUCTURE OF A SOLID STATE PHOTOMULTIPLIER - A solid-state photomultiplier (SSPM) includes an optical isolation structure therein. The SSPM includes a substrate and an epitaxial diode layer positioned on the substrate. A plurality of avalanche photodiodes (APDs) are fabricated on the epitaxial diode layer and the optical isolation structure is positioned about the plurality of APDs to separate each of the plurality of APDs from adjacent APDs. The optical isolation structure contains at least one of a light absorbing material and a light reflecting material deposited therein to reduce optical crosstalk and dark count rate in the SSPM. | 12-18-2008 |
20080308739 | RADIATION DETECTING APPARATUS AND RADIOGRAPHING SYSTEM - A radiation detecting apparatus includes: a sensor panel having a substrate and a photoelectric conversion element array arranged on the substrate; a scintillator layer arranged on one surface side of the sensor panel; and a light generator arranged on the sensor panel at the other side in opposition to the one side on which the scintillator layer is arranged, in corresponding to an area in which the photoelectric conversion element array is arranged. The light generator includes a light transmitting electrode layer, a rear electrode layer and a light emitting layer arranged between the light transmitting electrode layer and the rear electrode. The light emitting layer according to a first aspect is formed from light emitting substance, a binder and a black pigment. The light emitting layer according to a second aspect contains a first pigment or dye absorbing a light of the same wavelength of a maximum light emission from the scintillator layer, and a second pigment or dye different from the first pigment or dye. | 12-18-2008 |
20090008566 | GEIGER MODE AVALANCHE PHOTODIODE - A avalanche mode photodiode array ( | 01-08-2009 |
20090014661 | RADIATION IMAGING APPARATUS - A single flat panel detector provides radiation images which can correspond with various radiographic modes. In a radiation imaging apparatus including a flat panel detector which derives a radiation image according to incident radiation, a holding unit which holds the flat panel detector and a connecting mechanism capable of performing an connecting and a disconnecting between the holding unit and the flat panel detector, the flat panel detector can be controlled so that the maximum number of images of radiation images that the flat panel detector can derive when the flat panel detector is disengaged from the holding unit is smaller than the maximum number of images of radiation images that the flat panel detector can derive when the flat panel detector is held by the holding unit. | 01-15-2009 |
20090020705 | Fiber Optic Enhanced Scintillator Detector - The new scintillators are connected at one or more points or on one or more sides or faces, or on any or all sides to conductors which are collimators, lenses or fiber ends. Optical fibers in cables conduct the photons generated by the crystal scintillators to photon-actuated devices. The devices may be mounted near the crystal scintillators or remote from the crystal scintillators, for example on surfaces near drilled wells or exploration holes. The crystals or scintillators have any of several cross-sections. Down hole detectors or detectors used in other adverse conditions are ruggedized, with rugged flexible outer cases which are transparent to the looked-for energy, particles or rays, gamma rays for example. Inner scintillator construction of multiple aligned or angularly related scintillators connected to optical fiber ends allow bending, twisting and flexing without damaging scintillator arrays, individual scintillators, lenses or fiber optic connections. Optical fibers are connected to optical couplers on gamma camera plate scintillators to transmit patterns of photons through optical fiber cables to remote reading, storing or detecting sites. Illumination of remote sites is provided by fibers that parallel the photon conducting fibers. One or more optical fibers illuminates the site being studied by the scintillator, and one or more optical fibers return images of the site to a viewer screen or recorder. | 01-22-2009 |
20090020706 | Scintillator panel for radiation, and flat panel detector - An objective is to provide a flat panel detector exhibiting high durability and less noise, which is fitted with a scintillator for radiation exhibiting high emission efficiency, wherein the scintillator is easy to be manufactured because of the simple structure. Also disclosed is a scintillator panel for radiation possessing a radiotransparent substrate and provided thereon, a phosphor layer from which light is emitted by exposing the substrate to radiation and a reflective film at which light from the phosphor layer is reflected, wherein the reflective film provided between the substrate and the phosphor layer possesses a multilayer film composed of at least two dielectric layers exhibiting a high reflectivity. | 01-22-2009 |
20090026383 | X-Ray Detector and Method of Manufacturing the Same - Disclosed is an X-ray detector and a method of manufacturing the X-ray detector. A cushion layer is interposed between a scintillator panel for converting X-rays into visual light and a lower substrate formed with a thin film transistor, a photoelectric conversion device. Thus, the lower substrate and the scintillator panel can be bonded to each other such that no air layer can be introduced between the lower substrate and the scintillator panel. Therefore, no air layer is introduced, and thus, it is possible to prevent the efficiency of light incident to the photoelectric conversion device from being lowered. Further, the cushion layer is employed such that the lower substrate and the scintillator panel can be separated and reused. | 01-29-2009 |
20090039278 | SYSTEMS, METHODS AND APPARATUS FOR CORRECTION OF FIELD-EFFECT TRANSISTOR LEAKAGE IN A DIGITAL X-RAY DETECTOR - Systems, methods and apparatus are provided through which in some embodiments field-effect-transistor (FET) leakage is estimated recursively from a pixel value obtained when the FET is off. The corrected pixel value is then obtained by subtracting the FET leakage estimate from the pixel value read when the FET is on. A weighing factor is introduced for the FET leakage estimation to achieve the balance between image noise and correction resolution. | 02-12-2009 |
20090050817 | RADIAL RAY DETECTOR AND METHOD FOR MANUFACTURING THE SAME - A light receiving section and a substrate-side electrode pad of a photoelectric conversion substrate, a base-side electrode pad and an interconnect arranged on a surface side of a base are integrally coated with a protective layer. A scintillation layer is formed on a surface side of the protective layer. Corrosion of a photoelectric conversion element of the light receiving section, the electrode pads and the interconnect is prevented by the protective layer. When they are integrally coated with the protective layer, the light receiving section and the substrate-side electrode pad of the photoelectric conversion substrate can be arranged with a distance therebetween shortened, thereby realizing miniaturization of a detector and enlargement of the light receiving section. | 02-26-2009 |
20090065703 | ASSEMBLY FEATURES AND SHOCK PROTECTION FOR A DIGITAL RADIOGRAPHY DETECTOR - A digital radiography detector includes a casing having a planar member and side walls defining a cavity; a baseplate located within the cavity; and a radiography detector assembly mounted on the baseplate. Means are provided for locating the baseplate on the casing planar member. The means includes protrusion features projecting from one of the baseplate and the casing planar member and complementary recess features on the other of the baseplate and the casing planar member, the protrusion features mating with the recess features. The radiography detector assembly includes a photodetector array mounted on the baseplate and a scintillator screen in contact with the photodetector array, wherein the scintillator screen has one or more edges, and including a clamp mounted on the baseplate for clamping the scintillator screen on the one or more edges to the photodetector array to prevent movement of the screen. The detector includes a cover fastened to the casing spaced from the detector assembly; and including an external shock absorber which is attached to the outside surface of the detector and which encapsulates and seals any fasteners or openings required on the detector casing and cover. | 03-12-2009 |
20090065704 | IMPLEMENTATION OF AVALANCHE PHOTO DIODES IN (BI) CMOS PROCESSES - A radiation detector ( | 03-12-2009 |
20090065705 | SCINTILLATOR PLATE - A scintillator plate has a radiation permeable and moisture-impermeable substrate, a scintillator on the substrate, a first transparent organic layer that covers the scintillator, a second transparent organic layer arranged on the first transparent organic layer, and a transparent inorganic layer that is arranged on the second transparent organic layer. | 03-12-2009 |
20090108209 | X-RAY DETECTING PANEL, X-RAY DETECTOR AND METHOD OF DRIVING THE X-RAY DETECTOR - An X-ray detecting panel includes a thin film transistor; first and second photosensors connected to the thin film transistor; and a scintillator which changes X-rays that are external and incident thereto into visible light rays. | 04-30-2009 |
20090121146 | RADIATION DETECTOR ARRAY - A radiation detector module ( | 05-14-2009 |
20090140156 | Radiation Detector for Detecting Radiation - A radiation detector for detecting radiation has a semiconductor layer on a substrate, the semiconductor layer being covered by a converter layer so that incoming radiation penetrates the converter layer preceding the semiconductor layer. The semiconductor layer forms a part of a detector array formed by a number of detector elements. The semiconductor layer is given increased sensitivity by being formed of a polycrystalline semiconductor material. | 06-04-2009 |
20090140157 | IONIZING RADIATION SENSOR - A system that incorporates teachings of the present disclosure may include, for example, an ionizing radiation sensor having a first scintillator for generating photons from incoming ionizing radiation, an imaging intensifier for amplifying the photons, and an electron-multiplying charge-coupled device (EMCCD) coupled to the imaging intensifier for sensing the amplified photons generated by the imaging intensifier. Additional embodiments are disclosed. | 06-04-2009 |
20090146073 | Method for Signal Separation in Scintillation Detectors - Method for separation of effective pulses and test pulses in scintillation detectors, preferably for detection of ionizing radiation, comprising at least the following method steps: Selecting a pulsed test light source, preferably a pulsed LED, with single test light pulses of which has a chronological sequence of the relative light intensity, which differs from the chronological sequence of the relative light intensity of the measurement light pulses, feeding the test light pulses generated by the test light source into the light detector of the scintillation detector for measurement of the test light pulses by the light detector, analyzing the chronological sequence of the relative light intensities of the pulses measured by the scintillation detector, separating the measured pulses by using the different chronological sequences of the relative light intensities in test light pulses and measurement light pulses. | 06-11-2009 |
20090166546 | X-RAY DETECTOR AND METHOD FOR OPERATION OF AN X-RAY DETECTOR - An x-ray detector has a scintillator that emits light in response to exposure to x-ray radiation, and an activatable photosensor that detects the light from the scintillator. While the scintillator is being irradiated with x-ray radiation, the photosensor is inhibited from detecting the light for a predetermined time interval. After the irradiation of the scintillator with x-ray radiation ends, only then is the photosensor activated to detect light from the scintillator. An x-ray image of better quality is thereby obtained. | 07-02-2009 |
20090173885 | SCINTILLATION ELEMENT, SCINTILLATION ARRAY AND METHOD FOR PRODUCING THE SAME - A scintillation element comprises a scintillation material, and a reflective layer, wherein the reflective layer is formed as an intrinsic part of the scintillation material. Preferably, a plurality of scintillation elements may be arranged to form a scintillation array. A method for producing a scintillation element comprises providing a scintillation material, and producing a reflective layer at the scintillation material by exposing the scintillation material to physical and/or chemical conditions in such a way that the reflective layer is formed out of a part of the scintillation material. | 07-09-2009 |
20090200479 | RADIATION DETECTION APPARATUS AND SCINTILLATOR PANEL - A radiation detection apparatus includes an optical detector disposed on a substrate and having a plurality of photoelectric conversion elements which convert light into an electrical signal, and a scintillator layer disposed on the optical detector and having a columnar crystal structure which converts radiation into light, wherein the concentration of an activator of the scintillator layer is higher at the radiation-incident side opposite the optical detector and is lower at the optical detector side. The scintillator panel includes the substrate and the scintillator layer disposed on the substrate, wherein the concentration of the activator of the scintillator layer is higher at the radiation-incident side and is lower at the light-emission side. | 08-13-2009 |
20090206266 | RADIATION TRANSDUCER AND METHOD TO PRODUCE A RADIATION TRANSDUCER - A radiation transducer has a luminophore layer applied on a substrate, and at least one anti-discoloration substance is applied on the luminophore layer. In a method to produce a radiation transducer a luminophore layer is applied on a substrate, and at least one anti-discoloration substance is applied on the luminophore layer after the application of the luminophore layer on the substrate. | 08-20-2009 |
20090218502 | BETA-RADIATION DETECTOR FOR BLOOD FLOW AND CHROMATOGRAPHY - A detection device for beta radiation includes first and second adjacent detectors and a coincidence counter unit. The same beta particle may be counted twice. Alternatively, one or more positrons may be detected along with one or more gamma photons. | 09-03-2009 |
20090230312 | IMAGE SENSOR, IMAGE-SENSING APPARATUS USING THE IMAGE SENSOR, AND IMAGE-SENSING SYSTEM - An image sensor has a plurality of pixels, each pixel including a photoelectric converter and a pixel circuit for processing signals from the photoelectric converter and outputting processed signals and a scanning circuit, disposed between the photoelectric converters, included in each of at least two adjacent pixels among a plurality of pixels aligned in a single direction. An edge pixel accommodates, in order from an edge of the image sensor toward an interior, a predetermined empty region, a photoelectric converter and a pixel circuit. There is at least one position at which two adjacent pixels, the first of the two pixels accommodating, in order, a pixel circuit, a photoelectric converter and predetermined empty region, the second accommodating, in order, a predetermined empty region, a photoelectric converter and a pixel circuit. The scanning circuit is disposed in the predetermined empty region between the two adjacent pixels. | 09-17-2009 |
20090236533 | SPECTROMETER WITH PLASTIC SCINTILLATOR PROVIDED WITH A SPECULAR REFLECTOR - A gamma-ray detector ( | 09-24-2009 |
20090236534 | Pixelated Scintillation Detector and Method of Making Same - A scintillation detector may include a pixelated scintillation crystal mechanically and optically coupled to a position sensitive photodetector, such as a position sensitive photomultiplier tube (PSPMT). The pixelated scintillation crystal may be coupled to the position sensitive photodetector without using a window between the crystal and photodetector. According to one method of constructing the scintillation detector, a solid scintillation crystal may be coupled to the position sensitive photodetector and cut while coupled to the photodetector to form the pixelated scintillation crystal. | 09-24-2009 |
20090256080 | IDENTIFICATION AND LOCALIZATION OF RADIOISOTOPES - A radiation detection, localization, and identification system uses a searching algorithm to identify geometric correlation of hypothetical solutions to Compton Imaging. Geometric correlation of correct associations of gamma ray energies with each detected event yields the identity and location of radiation sources. The system's detector is an array of radiation detectors networked to act as a single detection system. This network has wide area of view and high sensitivity to radiation sources since no collimation is required. | 10-15-2009 |
20090261261 | Scintillation-Based Continuous Monitor for Beta-Emitting Radionuclides in a Liquid Medium - A scintillation-based detection device and method for continuous monitoring of flowing liquids for the presence of radionuclides. A side-stream pipe directs a portion of the monitored liquid from the main flow transfer pipe through and/or around the detector. Within the side-stream pipe is a scintillation detector assembly, having) either a nested-cylindrical or stacked-element shape. The real-time to near real-time detection capabilities are influenced by the total surface area of the detector assembly. The detectors are operated in anti-coincidence mode to distinguish pure beta-emitters from beta-gamma emitters and from pure gamma events. A gross beta count, gross gamma count, or some combination may also be determined. | 10-22-2009 |
20090261262 | Scintillation Detector Reflector - A scintillation detector and system includes a scintillation crystal having a surface and a reflector surrounding at least a portion of the scintillation crystal. The reflector includes an organic substrate and an inorganic material fixed to the organic substrate, wherein at least a portion of the inorganic material contacts at least a portion of the crystal surface. | 10-22-2009 |
20090261263 | RADIATION DETECTOR DEVICE - A radiation detector device is disclosed that includes a scintillator including a scintillator crystal and a hybrid photodetector (HPD) coupled to the scintillator. The HPD includes an electron tube having an input window and a photocathode adapted to emit photoelectrons when light passing through the input window strikes the photocathode. Further, the hybrid photodetector includes an electron detector adapted to receive photoelectrons emitted by the photocathode. The electron detector comprises a semiconductor material characterized by a bandgap of at least 2.15 eV. | 10-22-2009 |
20090278052 | RADIATION DETECTOR DEVICE HAVING AN ELECTRICALLY CONDUCTIVE OPTICAL INTERFACE - A radiation detector device is disclosed and includes a scintillation device having a scintillator crystal. The radiation detector device also includes a photosensor. Further, the radiation detector device includes an optical interface coupled between the scintillation device and the photosensor. The optical interface is electrically conductive. | 11-12-2009 |
20090283685 | RADIATION DETECTION APPARATUS AND RADIATION IMAGING SYSTEM - There is provided a radiation detection apparatus including a sensor panel including a photoelectric conversion unit with a plurality of photoelectric conversion elements over a substrate, a wavelength converter, disposed over the photoelectric conversion unit of the sensor panel, for converting a radiation into light detectable by the photoelectric conversion element, a plane shaped light emitting body for emitting light to the photoelectric conversion unit of the sensor panel, disposed over the wavelength converter, and a protective layer disposed on the plane shaped light emitting body. | 11-19-2009 |
20090283686 | AIRCRAFT HAVING AN INTEGRATED RADIATION DETECTION SYSTEM AND METHOD THEREFOR - A radiation detection aircraft has at least one component member of the aircraft having scintillator material. A signal converter is coupled to the at least one component member. An accumulator is coupled to the signal converter. | 11-19-2009 |
20090283687 | SCINTILLATION DETECTOR AND METHOD OF ASSEMBLING AND TESTING - A method of assembling a scintillation detector including placing a scintillator crystal in a casing, and forming a sealed casing having a controlled atmosphere different than ambient atmosphere, wherein the controlled atmosphere includes an inert gas and a trace gas in an amount of at least about 1 vol % and not greater than about 30 vol %, wherein the trace gas is selected from the group of materials consisting of hydrogen, helium, neon, krypton, xenon, and carbon monoxide. The assembling method further includes testing the sealed casing for leaks by detecting the presence of the trace gas. | 11-19-2009 |
20090283688 | SCINTILLATOR DEVICE - A detector includes a scintillator crystal having a front face and a rear face, a backplate disposed proximal to the rear face of the scintillator crystal, and a biasing member disposed proximal to the backplate and applying a biasing force to the backplate. In turn, the backplate applies a biasing force to the scintillator crystal in a direction toward the front face. The biasing member comprises a single-turn, round-section wire wave spring. | 11-19-2009 |
20090289190 | High efficiency fiber-optic scintillator radiation detector - A fiber-optic scintillation radiation detector includes: a cladding; a core extending within the cladding; and a scintillator contiguous with the core within the cladding responsive to particle and/or photon radiation by providing scintillation photons, which are then primarily propagated in the core. | 11-26-2009 |
20090294681 | Radiation Detector with Dual-Speed Scintillator - An apparatus for detecting radiation includes a dual-speed scintillator for receiving the radiation and emitting secondary radiation in response thereto, and detectors in communication with the dual-speed scintillator for receiving the secondary radiation. | 12-03-2009 |
20090294682 | Scintillator and Methods of Making and Using Same - A scintillation array and methods of making and using are provided. The array may be a flexible array that can be arranged into two or more flexible configurations. The array may be positioned around a portion of an object so that the array pixels are equidistant from the center or surface of the object. | 12-03-2009 |
20090294683 | Curved Scintillation Crystal Array - Partially and completely curved and spherical scintillation arrays are described. These arrays can provide improved imaging of a variety of subjects and objects. | 12-03-2009 |
20090309036 | SILICON DETECTOR AND METHOD FOR CONSTRUCTING SILICON DETECTORS - Disclosed is a die having photodetectors provided on a first surface thereof. The die includes an insulative shell member, a conductive shell member and a photodetector conductor. The insulative shell member extends around a periphery of the photodetector receptors and extending through a depth of the semiconductor die. The conductive shell member bridges the insulative shell member and extends through the depth of the semiconductor die. The photodetector conductors are provided on the first surface of the semiconductor die and electrically couple respective photodetectors with a corresponding conductive shell member. Also disclosed is a process for making a semiconductor die and an integrated circuit structure. | 12-17-2009 |
20100006769 | DETECTOR ASSEMBLY FOR DETECTING RADIATION WITH ANGULAR RESOLUTION AND METHOD FOR OPERATING SAID ASSEMBLY - A detector assembly for detecting radiation with angular resolution comprises at least one detector element, which comprises a front face and a rear face, a first detector material and a second detector material between the front face and the rear face, a space between the front face and the rear face of the detector element being filled by a plurality of regions of the first detector material and at least one region of the second detector material and each region connecting the front face to the rear face of the detector element; and radiation incident on the detector element through the front face being collimated by means of the detector materials. | 01-14-2010 |
20100019162 | RADIATION DETECTOR - In a radiation detector in which scintillator layers are directly formed on all the light receiving parts of a plurality of photoelectric conversion substrates, space and level difference between the adjacent photoelectric conversion substrates are determined so that the effects of these space and level difference fall within a range corresponding to the effect of one photoelectric conversion element. Specifically, the space between the adjacent photoelectric conversion substrates is equal to or less than 133 μm and the level difference between the adjacent photoelectric conversion substrates is equal to or less than 100 μm. Accordingly, the scintillator layers can be directly formed on all the light receiving parts of the plurality of photoelectric conversion substrates. This prevents degradation in MTF and sensitivity and reduces manufacturing costs. | 01-28-2010 |
20100025594 | Neutron Moderator, Neutron Irradiation Method, and Hazardous Substance Detection Apparatus - A neutron moderator includes a neutron generator; a neutron moderating material arranged on one side of the neutron generator; a gamma ray shielding material covering an external surface of the neutron moderating material; and a thermal neutron absorbing material covering the external surface of the neutron moderating material except a side where the neutron generator is arranged. | 02-04-2010 |
20100032578 | COMPOSITE SCINTILLATOR INCLUDING A MICRO-ELECTRONICS PHOTO-RESIST - A radiation-sensitive detector includes a photosensor layer with one or more photosensor dixels and a composite scintillator layer with one or more scintillator dixels optically coupled to the photosensor layer. The composite scintillator layer is formed from a mixture including a scintillator material having a first refractive index corresponding to a first wavelength and a photo-resist used in micro-electromechanical systems production, having a second refractive index corresponding to the first wavelength. The first and second refractive indices are substantially matched, and the composite scintillator layer produces light having the first wavelength and that is indicative of x-radiation detected thereby. | 02-11-2010 |
20100038550 | IDENTIFICATION AND LOCALIZATION OF EXPLOSIVES AND OTHER MATERIAL - A neutron source illuminates suspect material leading to emission of gamma rays characteristic of the isotopes present. The system measures Compton scattering of emitted gamma rays using detectors with three dimension event localization capability. Detection does not require full energy deposition. A spatial correlation of projection vectors is computed by a reconstruction that searches for solutions that generate spatial correlation. Identification and location for contraband material is determined from solutions that generate spatial correlation. | 02-18-2010 |
20100044576 | BARIUM IODIDE AND STRONTIUM IODIDE CRYSTALS AND SCINTILLATORS IMPLEMENTING THE SAME - In one embodiment, a material comprises a crystal comprising strontium iodide providing at least 50,000 photons per MeV. A scintillator radiation detector according to another embodiment includes a scintillator optic comprising europium-doped strontium iodide providing at least 50,000 photons per MeV. A scintillator radiation detector in yet another embodiment includes a scintillator optic comprising SrI | 02-25-2010 |
20100051821 | PHOTODIODE AND PHOTODIODE ARRAY WITH IMPROVED PERFORMANCE CHARACTERISTICS - The present invention is a photodiode and/or photodiode array, having a p+ diffused area that is smaller than the area of a mounted scintillator crystal, designed and manufactured with improved device characteristics, and more particularly, has relatively low dark current, low capacitance and improved signal-to-noise ratio characteristics. More specifically, the present invention is a photodiode and/or photodiode array that includes a metal shield for reflecting light back into a scintillator crystal, thus allowing for a relatively small p+ diffused area. | 03-04-2010 |
20100090120 | SCINTIGRAPHIC DEVICE WITH SPATIAL SUPER-RESOLUTION - A scintigraphic device includes: a collimator for receiving and directing electromagnetic radiation from a source; a scintillation structure associated with the collimator for receiving the electromagnetic radiation from the collimator and converting it into visible radiation; an electro-optical converter combined with a suitable electronics and associated with the scintillation structure for receiving the visible radiation and converting it into electric signals; a processing unit connected to the electro-optical converter for receiving the electric signals and rebuilding, as a function of the electric signals, images of the source; an actuating system for mutually moving the source and the collimator to enable the collimator to detect the electromagnetic radiation at different mutual positioning locations of the source and the collimator, the processing unit being adapted to rebuild a plurality of auxiliary images representative of the source, each auxiliary image corresponding to a respective mutual positioning of the source and the collimator. | 04-15-2010 |
20100096558 | X-RAY DETECTOR, A CORRESPONDING X-RAY IMAGING DEVICE AND A METHOD FOR IMPROVING THE RESOLUTION OF A SCINTILLATOR-BASED X-RAY DETECTOR - The present invention relates to a device with high efficiency and high spatial resolution for detection of individual x-rays. Briefly, the invention provides a detector for x-rays with energy exceeding 20 keV that is based on a columnar scintillator having a number of columns, and a semiconductor readout circuit coupled to the scintillator, where the detector is configured for providing a detector resolution that is independent of scintillator thickness. This may be accomplished by estimating a misalignment of the columns of the columnar scintillator with respect to the direction of incoming x-rays and either physically aligning the columns of the columnar scintillator to the direction of incoming x-rays or computationally correcting for the estimated misalignment. | 04-22-2010 |
20100102242 | MULTI-LAYER RADIATION DETECTOR ASSEMBLY - A technique is provided for forming a multi-layer radiation detector. The technique includes a charge-integrating photodetector layer provided in conjunction with a photon-counting photodetector layer. In one embodiment, a plurality of photon-counting photosensor elements are disposed adjacent to a plurality of charge-integrating photosensor elements of the respective layers. Both sets of elements are connected to readout circuitry and a data acquisition system. The detector arrangement may be used for energy discriminating computed tomography imaging and similar computed tomography systems. | 04-29-2010 |
20100108900 | SOLID-STATE PHOTOMULTIPLIER HAVING IMPROVED TIMING RESOLUTION - A solid-state photomultiplier is provided for use in imaging detectors. The solid-state photomultiplier includes a plurality of microcells configured to detect impinging photons. Each of the plurality of microcells further includes a photodiode coupled to a common electrode through a quenching resistor and configured to convert the impinging photons into electrical signals, and an impedance device coupled in parallel with the quenching resistor so as to reduce overall quenching impedance at high frequency. Further, techniques are provided for implementing low impedance device with controllable value to the SSPM for optimized timing resolution. | 05-06-2010 |
20100200762 | DUAL-RANGE PHOTON DETECTOR - The invention relates to a detector for measuring nuclear radiation, especially gamma-radiation, comprising a scintillator crystal with a light decay time of less than 100 ns, a silicon drift detector (SDD) for the measurement of both direct hits of low energy radiation and the light, being emitted from the scintillator crystal, the silicon drift detector being mounted between the scintillation crystal and the radiation entry window, a preamplifier, connected to the SDD, electronic devices, being capable of determining the signal rise time of the measured signals and of separating the signals on the basis of said rise time, electronic devices, being capable of separately collecting the energy spectra of SDD and scintillator detection events on the basis of the different rise times. | 08-12-2010 |
20100200763 | SILICON PHOTOMULTIPLIER ENERGY RESOLUTION - A family of photodetectors includes at least first and second members. In one embodiment, the family includes members having different pixel sizes. In another, the family includes members having the same pixel size. The detection efficiency of the detectors is optimized to provide a desired energy resolution at one or more energies of interest. | 08-12-2010 |
20100207033 | X-RAY DETECTOR AND FABRICATION METHOD THEREOF - A structure of X-ray detector includes a Si-rich dielectric material for serving as a photo-sensing layer to increase light sensitivity. The fabrication method of the X-ray detector including the Si-rich dielectric material needs less photolithography-etching processes, so as to reduce the total thickness of thin film layers and decrease process steps and cost. | 08-19-2010 |
20100243908 | Flat Panel Detector - Provided is a flat panel detector which prevents aging deterioration of characteristics of a phosphor layer, protects the phosphor layer from chemical alteration or physical impact, and maintains a stable contact state between a scintillator panel and a flat light receiving element. Disclosed is a flat panel detector comprising a scintillator panel comprising a scintillator provided with a phosphor layer on a substrate and a protective layer covering the phosphor surface of the scintillator, and the scintillator panel being placed on the surface of a flat light receiving element comprising plural picture elements which are two-dimensionally arranged, wherein a re-releasable adhesive layer is provided on the protective layer surface. | 09-30-2010 |
20100243909 | RADIATION DETECTOR - The present invention provides a radiation detector with improved workability in manufacturing processes and maintenance processes. Namely, a first housing and a second housing can be opened, to allow accessing of a TFT substrate and a radiation converting layer disposed in the first housing, and to allow accessing of a circuit substrate disposed in the second housing. Accordingly, higher workability can be achieved in manufacturing processes such as connecting of switching elements of the TFT substrate and the circuit substrate, and in maintenance processes of the TFT substrate and the circuit substrate. | 09-30-2010 |
20100270471 | LARGE DYNAMIC RANGE RADIATION DETECTOR AND METHODS THEREOF - According to one embodiment, a radiation detector comprises a scintillator and a photodiode optically coupled to the scintillator. The radiation detector also includes a bias voltage source electrically coupled to the photodiode, a first detector operatively electrically coupled to the photodiode for generating a signal indicative of a level of a charge at an output of the photodiode, and a second detector operatively electrically coupled to the bias voltage source for generating a signal indicative of an amount of current flowing through the photodiode. | 10-28-2010 |
20100308231 | method and system for discrimination pulse shape - This ZCPSD Module can be used to separate neutron and gamma particles, alphas and protons, electrons and alphas etc depending on the detector used. ZCPSD provides optimum pulse shape separation for liquid scintillation counters. However the applications are not limited to n/γ separation. The ZCPSD can also be used for particle separation with inorganic scintillators, phoswitches, thick SBdetectors and proportional counters. The dc coupling allows high statistical count rate without affecting resolution, a major problem of conventional designs. The Single width NIM conforming to International Standards is easy to use, since only the anode signal is required from PM tubes. The ZCPSD can be used to generate identification spectra with a TAC and MCA or an identification signal for one species of particle. | 12-09-2010 |
20110001054 | RADIATION DETECTOR DEVICE HAVING AN ELECTRICALLY CONDUCTIVE OPTICAL INTERFACE - A radiation detector device is disclosed and includes a scintillation device having a scintillator crystal. The radiation detector device also includes a photosensor. Further, the radiation detector device includes an optical interface coupled between the scintillation device and the photosensor. The optical interface is electrically conductive. | 01-06-2011 |
20110017918 | SINGLE PHOTON RADIATION DETECTOR - The invention relates to a radiation detector ( | 01-27-2011 |
20110042576 | DIRECT WAFER-BONDED THROUGH-HOLE PHOTODIODE - A photodetector array comprises a plurality of photodetectors formed by a high resistivity low doping concentration first semiconductor substrate and a low resistivity high doping concentration second semiconductor substrate. The first and second semiconductor substrates are directly bonded together with a silicon-to-silicon atomic bond at a bond interface, thereby providing a sharp transition from the first substrate to the second substrate. A method of making the photodetector array is also provided. | 02-24-2011 |
20110057112 | PHOTODIODE ARRAY ADN PRODUCTION METHOD THEREOF, AND RADIATION DETECTOR - A photodiode array | 03-10-2011 |
20110073770 | SCINTILLATOR, ASSOCIATED DETECTING DEVICE AND METHOD - A scintillator is provided, comprising: a composition of formula (Lu | 03-31-2011 |
20110101232 | Detector for the Measurement of Ionizing Radiation - The invention relates to a detector for the measurement of ionizing radiation, preferably γ-radiation and x-rays, comprising a scintillator and a light detector, the light detector being stabilized by using a predefined light source, preferably a Light Emitting Diode (LED), where the length and/or shape of the light pulses of the light source is different from the length and/or shape of the light pulses emitted by the scintillator. The light source induced pulses and the radiation induced pulses are separated from all other pulses on the basis of their pulse width. The detector is additionally stabilized by correcting the measured light output, that is the pulse height of the output signals, of the detector with the detector temperature shift, being dependant from the average pulse width of the accumulated γ-pulses. | 05-05-2011 |
20110108734 | SEMICONDUCTIVE MATERIALS AND ASSOCIATED USES THEREOF - High rate radiation detectors are disclosed herein. The detectors include a detector material disposed inside the container, the detector material containing cadmium, tellurium, and zinc, a first dopant containing at least one of aluminum, chlorine, and indium, and a second dopant containing a rare earth metal. The first dopant has a concentration of about 500 to about 20,000 atomic parts per billion, and the second dopant has a concentration of about 200 to about 20,000 atomic parts per billion. | 05-12-2011 |
20110121192 | SCINTILLATOR, METHOD FOR MANUFACTURING SCINTILLATOR, AND RADIATION DETECTOR - A radiation detector is provided with a scintillator | 05-26-2011 |
20110147602 | RADIOGRAPHIC IMAGING APPARATUS, RADIOGRAPHIC IMAGING SYSTEM, AND METHOD OF PRODUCING RADIOGRAPHIC IMAGING APPARATUS - A radiographic imaging apparatus includes a sensor panel having an effective pixel region and a peripheral region surrounding the effective pixel region; a scintillator layer disposed on the effective pixel region and the peripheral region of the sensor panel; and a scintillator protecting layer disposed on the scintillator layer. The scintillator layer includes a plurality of columnar crystals disposed on the effective pixel region, a plurality of columnar crystals disposed on the peripheral region, and a resin disposed between the plurality of the columnar crystals on the peripheral region and surrounding the plurality of the columnar crystals on the effective pixel region. The plurality of the columnar crystals on the effective pixel region is enclosed by the sensor panel, the scintillator layer, and the resin. | 06-23-2011 |
20110174981 | Photodiode Array, Radiation Detector and Method for Producing Such a Photodiode Array And Such A Radiation Detector - A photodiode array for a radiation detector is disclosed, including a multiplicity of photodiodes arranged in a structured fashion, the photodiodes respectively having an active pixel region for converting light into electrical signals. In at least one embodiment, a transparent oxide layer with a refractive index comparable to the photodiodes is arranged on the active pixel region of at least some of the photodiodes on a side of the photodiode array provided for arranging a scintillator array. Compared to known photodiode arrays, the oxide layer replaces an adhesive. As a result of equalizing the refractive indices, light incident on the interface between the oxide layer and the photodiode array is refracted or reflected to a lesser extent. This reduces the optical crosstalk between adjacent pixels. Moreover, the active pixel regions of the photodiodes become optically visible as a result of the oxide layer. This therefore provides conditions for precisely aligning the photodiode array relative to the scintillator array by way of optical monitoring. Overall, compared to known radiation detectors, this procedure can increase the effective light yield. At least one embodiment of the invention moreover relates to a corresponding method for producing such a photodiode array and such a radiation detector. | 07-21-2011 |
20110204247 | SCINTILLATOR PANEL, RADIATION DETECTOR, AND METHOD FOR MANUFACTURING THE SAME - Provided are a scintillator panel and a radiation detector which give a radiation image reduced in sensitivity unevenness and sharpness unevenness. Also provided are processes for producing the scintillator and the detector. The scintillator panel comprises a support and, deposited thereon, a phosphor layer comprising columnar crystals of a phosphor which have been formed by the vapor deposition method. The panel is characterized in that the columnar crystals of a phosphor comprise cesium iodide (CsI) as a base ingredient and thallium (Tl) as an activator ingredient and have, in a root part thereof, a layer containing no thallium, and that the coefficient of variation in thallium concentration in the plane of the phosphor layer is 40% or less. | 08-25-2011 |
20110210259 | MICRO-CHANNEL PLATE DETECTOR - A method and system for providing a micro-channel plate detector. An anodized aluminum oxide membrane is provided and includes a plurality of nanopores which have an Al coating and a thin layer of an emissive oxide material responsive to incident radiation, thereby providing a plurality of radiation sensitive channels for the micro-channel plate detector. | 09-01-2011 |
20110248176 | DETECTION APPARATUS, METHOD OF MANUFACTURING THE SAME, AND DETECTION SYSTEM - A detection apparatus comprising a substrate; a switching element arranged over the substrate and including a plurality of electrodes; a conductive line arranged over the substrate and electrically connected to a first electrode of the plurality of electrodes of the switching element; and a conversion element including a semiconductor layer arranged over the switching element and the conductive line and arranged between two electrodes, one electrode of the two electrodes being electrically connected to a second electrode of the plurality of electrodes of the switching element, is provided. The one electrode of the conversion element is arranged over the switching element and the conductive line through a space formed between the one electrode and the first electrode of the switching element or between the one electrode and the conductive line. | 10-13-2011 |
20110272588 | COMPACT AND DURABLE ENCASEMENT FOR A DIGITAL RADIOGRAPHY DETECTOR - A digital radiography detector includes a housing having first and second spaced planar members and four side walls defining a cavity. A radiographic image detector assembly is mounted within the cavity for converting a radiographic image to an electronic radiographic image. The detector assembly includes a detector array mounted on a stiffener. A shock absorbing elastomer assembly is located within the cavity for absorbing shock to the detector array/stiffener in directions perpendicular to and parallel to the detector array/stiffener. | 11-10-2011 |
20110278466 | DIGITAL 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. | 11-17-2011 |
20110297839 | SOLID-BODY X-RAY IMAGE DETECTOR WITH CIRCULAR DETECTOR SURFACE AREA - A solid-body X-ray image detector and method of manufacturing the same are disclosed. The detector has a circular surface area arrangement of CCD or CMOS detector pixels on a substrate, a scintillator arranged on the substrate, and a circular detector surface area, wherein the substrate comprises a single, substantially circular silicon wafer and the detector surface area takes up the surface area of the silicon wafer up to a narrow edge region. | 12-08-2011 |
20120112082 | SCINTILLATOR PANEL HAVING UNIFORM OUTPUT RESPONSE - A scintillator panel assembly for gamma ray detection includes a scintillator panel having fluorescent material therein for generating a photon when a gamma ray enters the panel, and one or more non-scintillating segments embedded in opposing edges of the scintillator panel which conduct light but do not generate a photon when a gamma ray enters. One or more photon detectors, such as photomultiplier tubes, are disposed immediately adjacent the one or more non-scintillating segments for receiving photons conducted through the non-scintillating segments. The non-scintillating segments preferably have optical transmission and reflection properties that are substantially the same as the optical transmission and reflection properties of the scintillator panel. This configuration provides substantially uniform light output response for all photon generation locations which results in improved spectral resolution. | 05-10-2012 |
20120112083 | High Density, Proportional-Mode, APD Arrays for Individual Scintillator Readout in PET Applications - The present invention is a photodetector including improved photosensors configured of an array of small (sub-millimeter) high-density avalanche photodiode cells utilized to readout a single scintillator. Each photosensor comprises a plurality of avalanche photodiodes cells arranged in an (n×n) array of avalanche photodiode cells (where, n>1) that are coupled to a single scintillation crystal. The overall (n×n) array area as the photosensor is the same as the area of a face of the scintillator and each avalanche photodiode cell has a surface area that is not greater than one square millimeter. The photosensor is also configured to facilitate reading the output of each avalanche photodiode cell in the array. By reading out each small avalanche photodiode cell independently, the noise and capacitance are minimized and thereby provide a more accurate determination of energy and timing. | 05-10-2012 |
20130020490 | DENTAL RADIOLOGY APPARATUS AND SIGNAL PROCESSING METHOD USED THEREWITH - A dental radiology apparatus having: an intraoral sensor comprising a detector including an active pixel array produced using biCMOS technology and converting a received x-ray into at least one analog electrical output signal; an electronic module encapsulated in a case and which has at least one detector activation device, the module linked to the sensor for the transmission to the sensor of a detector activation signal generated in the module and for the transmission to the module of the at least one analog electrical output signal, the module having analog-digital means for converting the at least one analog electrical output signal into at least one digital output signal. A remote processing and display unit of the at least one digital output signal is linked to the electronic module to ensure the transmission to the unit of the at least one digital output signal. | 01-24-2013 |
20130187057 | ION DETECTOR - An ion detector | 07-25-2013 |
20140021362 | GAMMA RAY DETECTING APPARATUS AND METHOD FOR DETECTING GAMMA RAY USING THE SAME - There are provided a gamma ray detecting apparatus, including: a secondary electron emitter causing a Compton scattering reaction with an incident gamma ray to emit secondary electrons in a progress direction of the gamma ray; a first radiation detector provided to be opposed to the secondary electron emitter with respect to an emission progress direction of the secondary electrons and detecting the position and transfer energy of the secondary electron; a second radiation detector provided to be opposed to the first radiation detector with respect to the emission progress direction of the secondary electron and detecting the position and the transfer energy of the secondary electron passing through the first radiation detector; a third radiation detector provided to be opposed to the second radiation detector with respect to the emission progress direction of the secondary electron and detecting residual energy of the secondary electron by absorbing the secondary electron passing through the second radiation detector; and a data processor having a coincidence circuit judging whether the secondary electrons simultaneously react in the first to third radiation detectors, and the data processor back traces trajectories of the secondary electrons detected by the first and second radiation detectors to detect the position of a ray source of the gamma ray, and a gamma ray detecting method. | 01-23-2014 |
20140252241 | SOLID STATE IMAGING DEVICE - A solid state imaging device | 09-11-2014 |
20150034833 | METHOD FOR CONTROLLING A PHOTODETECTOR BY AUTOMATICALLY DETECTING INCIDENT RADIATION - A method is provided for controlling a light-sensitive device, for example, a digital X-ray detector including an array of light-sensitive points. The light-sensitive device includes a column conductor, line conductors, and light-sensitive points. Each light-sensitive point is connected between the column conductor and one of the line conductors, and includes a light-sensitive element converting a photon flux into electrical charges, and a transistor transferring the electrical charges to the column conductor based on control of a signal received by the corresponding line conductor. The method depends on the presence of a capacitor for cross-coupling between the drain and source of each transistor in the off state. The capacitor provides a potential variation to the column conductor upon receiving photons. The method comprises comparing the potential variation with a threshold, and reading the light-sensitive points in the event that the result of the comparison is positive. | 02-05-2015 |
20150108358 | PHOTODETECTOR - According to an embodiment, a photodetector includes a scintillator layer, a photodetection layer, an antireflective member, and an intermediate layer. The scintillator layer is configured to convert radiation into light. The photodetection layer has a first surface facing the scintillator layer. The photodetection layer includes a pixel region that includes multiple photodetection devices configured to detect light, and a peripheral region that surrounds the pixel region. The pixel region and the peripheral region are provided on the first surface. The antireflective member is provided between the scintillator layer and the photodetection layer and opposed to at least part of the peripheral region. The antireflective member is configured to prevent reflection of at least part of light in a sensitive wavelength range of the photodetection devices. The intermediate layer is provided in a region other than the antireflective member between the scintillator layer and the photodetection layer. | 04-23-2015 |
20180026071 | RADIATION DETECTOR SYSTEM OF RADIATION IMAGING MODALITY | 01-25-2018 |
20190146100 | ELECTROMAGNETIC RADIATION DETECTION DEVICE | 05-16-2019 |