Patent application number | Description | Published |
20080237481 | Corrosion barrier layer for photoconductive X-ray imagers - Improved corrosion resistance for direct X-ray imaging detectors is obtained by providing a pixelated, electrically conductive barrier layer between the X-ray sensitive material and the pixel electrodes. Each barrier layer can cover part or all of its corresponding pixel electrode. In cases where pixel electrodes makes contact to underlying circuitry through vertical vias, it is preferred for the barrier layers to cover the via sections of the pixel electrodes. The barrier layers for each pixel electrode can be spaced apart from each other, or they can all be included within a continuous film on top of the pixel electrodes. Such a continuous film can be pixelated by spatially modulating its properties (e.g., thickness, doping) to significantly reduce lateral conductivity from pixel to pixel. | 10-02-2008 |
20090087045 | CANCER DETECTION, DIAGNOSIS, STAGING, TREATMENT PLANNING, DELIVERY, AND MONITORING USING X-RAY ATTENUATION COEFFICIENT DISTRIBUTIONS - A method of analyzing a volumetric data set obtained by an imaging system from an object is provided includes defining a first region of interest comprising a population of voxels of a first tissue part of the object to obtain a first distribution of radiation attenuation coefficient values, defining a second region of interest comprising a sample of voxels of a second tissue part of the object to obtain a second distribution of radiation attenuation coefficient values, and distinguishing the second tissue from the first tissue using the properties of the first and second distributions of radiation attenuation coefficients. | 04-02-2009 |
20090190714 | Methods, Apparatus, and Computer-Program Products for Increasing Accuracy in Cone-Beam Computed Tomography - Disclosed are methods, systems, and computer-product programs for increasing accuracy in cone-beam computed tomography. | 07-30-2009 |
20100069742 | Systems and Methods for Tracking and Targeting Object in a Patient Using Imaging Techniques - A method for use in a medical procedure includes obtaining a contrast-enhanced image of a portion of a patient, the portion of the patient having an object, obtaining a non-contrast-enhanced image of the portion, wherein the contrast-enhanced image and the non-contrast-enhanced image are created at different times, and determining a position of the object using the contrast-enhanced image and the non-contrast-enhanced image. A method for use in a medical procedure includes obtaining a contrast-enhanced image of a portion of a patient, the portion of the patient having an object, obtaining a non-contrast-enhanced image of the portion, and determining a position of the object using the contrast-enhanced image and the non-contrast-enhanced image, wherein the act of determining the position is performed is substantially real time. | 03-18-2010 |
20110133094 | MULTI-ENERGY RADIATION DETECTOR - A radiation projection detector includes a conversion layer configured to generate light photons in response to a radiation, the conversion layer having a plurality of first conversion elements and a plurality of second conversion elements, and a photo detector array aligned with the conversion panel, wherein each of the first conversion elements has a first radiation conversion characteristic, and each of the second conversion elements has a second radiation conversion characteristic. A radiation projection detector includes a photoconductor layer configured to generate charges in response to radiation, the photoconductor layer having a plurality of first photoconductor elements and a plurality of second photoconductor elements, and a detector array aligned with the photoconductor layer, wherein each of the first photoconductor elements has a first charge generating characteristic, and each of the second photoconductor elements has a second charge generating characteristic. | 06-09-2011 |
20110299652 | METHODS, APPARATUS, AND COMPUTER-PROGRAM PRODUCTS FOR INCREASING ACCURACY IN CONE-BEAM COMPUTED TOMOGRAPHY - Disclosed are methods, systems, and computer-product programs for increasing accuracy in cone-beam computed tomography. | 12-08-2011 |
20130071333 | METHOD AND SYSTEM FOR IDENTIFYING, ASSESSING, AND MANAGING CANCER GROWTH RATES AND POTENTIAL METASTASIS - Techniques described herein generally relate to identifying, assessing, and managing cancer growth rates and potential metastasis. Some example methods may include constructing one or more quantitative metrics for the potential metastasis in a selected population of other patients, acquiring a first set of numeric biomarker data for the patient before having placed a biomarker in the patient, acquiring a second set of numeric biomarker data for the patient after having placed the biomarker in the patient, determining a set of biomarker surrogate values for microvessel density information based on a mean numeric biomarker difference derived from the first set of numeric biomarker data and the second set of numeric biomarker data, determining a set of biomarker surrogate values for microvessel density information based on a mean numeric biomarker difference derived from the first set of numeric biomarker data and the second set of numeric biomarker data, and predicting quantitative and objective risk for the cancer growth rates and potential metastasis and adjusting a treatment plan based on the biomarker surrogate values and at least one of the one or more quantitative metrics. | 03-21-2013 |
20130071334 | METHOD AND SYSTEM FOR IDENTIFYING, ASSESSING, AND MANAGING CANCER DISEASE - Techniques described herein generally relate to identifying, assessing, and managing cancer diseases. Some example methods may include constructing one or more quantitative metrics for the cancer disease in a selected population of other patients retrieved during the scheduling interval, acquiring a first set of numeric biomarker data for the patient before having placed a biomarker in the patient, acquiring a second set of numeric biomarker data for the patient after having placed the biomarker in the patient, identifying one or more nodules from the first set of numeric biomarker data and the second set of numeric biomarker data, wherein each of the one or more nodules is characterized by a mean numeric biomarker difference value derived from the first set of numeric biomarker data and the second set of numeric biomarker data, and predicting quantitative and objective risk for the one or more nodules based on the mean numeric biomarker difference value and at least one of the one or more quantitative metrics. | 03-21-2013 |
20140348288 | EBEAM TOMOSYNTHESIS FOR RADIATION THERAPY TUMOR TRACKING - A system for tracking tumors during radiotherapy for interleaving treatment pulses with imaging pulses is disclosed. The system includes a multisource scanning eBeam X-ray tube having a plurality of focal spots. The X-ray tube is configured to emit X-rays in a plurality of different locations on a target by sequentially emitting the X-rays to the focal spots in the plurality of focal spots. This is done such that the X-rays can be emitted to the plurality of different locations without substantially moving the X-ray tube or the target. The system further includes an imager panel configured to act as the target and configured to receive the X-rays from the focal spots of the X-ray tube. The system further includes a tomosynthesis reconstruction module configured to process output from the imager panel to construct an image. | 11-27-2014 |
20140353513 | UNIVERSAL KV-MV IMAGERS - An x-ray imaging device may include a detector array and an x-ray converting layer coupled to the detector array. The detector array and the x-ray converting layer may be configured such that x-rays traverse the detector array before propagating in the x-ray converting layer. The x-ray imaging device may also include a buildup layer behind the x-ray converting layer. The x-ray imaging device may be used as a “universal” imager for both MV and kV imaging. | 12-04-2014 |
Patent application number | Description | Published |
20080226018 | CONTRAST-ENHANCED CONE BEAM X-RAY IMAGING, EVALUATION, MONITORING AND TREATMENT DELIVERY - A method of imaging a patient's uncompressed region of interest using X-ray cone beam computed tomography or cone beam digital tomography comprises the step of introducing an effective amount of a contrast agent to the uncompressed region of interest. A system for imaging a patient's uncompressed region of interest using cone beam computed tomography (CBCT) or cone beam digital tomography (CBDT) comprises an X-ray source transmitting an X-ray to the uncompressed region of interest, an image acquisition system acquiring a plurality of two-dimensional projection images data for a CBCT or CBDT data set with at least one of the projection images acquired in 35 milliseconds or less, and a processor generating a three-dimensional computed tomography image data set resolving voxels with dimensions of 0.4 mm or less in at least two orthogonal directions. | 09-18-2008 |
20080317202 | System and Method for Imaging and Treatment of Tumorous Tissue in Breasts Using Computed Tomography and Radiotherapy - The present invention provides a system | 12-25-2008 |
20100016649 | External Beam Radiotherapy And Imaging With Radioactive Isotope - A method of delivering external radiation beams to a target volume in a body portion includes positioning a radioactive isotope source at a plurality of locations spaced apart around the body portion, and collimating radiation beams of the radioactive isotope source from the plurality of locations, whereby the target volume in the body portion is deposited with a predetermined dose distribution. A radiation device employs a member having a configuration adapted to surround a body portion to be irradiated. The member has a channel and a plurality of collimators spaced apart along and coupled to the channel. The plurality of collimators define a plurality of dwelling locations for a radioactive isotope source in the channel and are configured to collimate radiation beams of the radioactive isotope source. | 01-21-2010 |
20100128839 | Structure and Procedure for X-Ray CT Guided Cancer Treatment - A radiation apparatus includes a first radiation source configured to generate radiation suitable for therapeutic treatment, and a structure for supporting a body. The structure comprises a curved surface adapted to receive a body portion to be treated during a therapeutic treatment. | 05-27-2010 |
20110182402 | IMAGING BREAST CANCEROUS LESIONS WITH MICROCALCIFICATIONS - A radiation system includes a first radiation source and a first detector positioned opposite to each other configured to image a body portion, and a second radiation source and a second detector positioned opposite to each other configured to image a region of interest in the body portion. The first radiation source has a first spot size and the first detector has a first pixel size. The second radiation source has a second spot size and the second detector has a second pixel size. The first spot size of the first radiation source may be different from the second spot size of the second radiation source, and/or the first pixel size of the first detector may be different from the second pixel size of the second detector. | 07-28-2011 |
20140051992 | LOCALIZATION OF A TARGET USING IN VIVO MARKERS - An apparatus and method of localization of a target using in vivo markers is described. The method may include adjusting a position of a target volume within the body relative to a treatment beam using the in vivo markers. | 02-20-2014 |
20140369582 | Method of Determining the Probabilities of Suspect Nodules Being Malignant - Methods of determining a probability of a suspect cancer nodule being malignant are provided. In one embodiment, the method begins with tabulating histogram data of malignant and benign nodules as a function of biomarker values for a specified patient population suspect of having a specific type of cancer. Next, the tabulated histogram data is separated into a plurality of biomarker bins where the bins are ranges of biomarker values, and malignancy probability fractions are calculated for each biomarker bin by dividing a number of true positives in each marker bin by a summed total of all true and false positives in each bin. Finally, a suspect nodule in a patient is scanned, a biomarker value for the suspect nodule determined, and a malignancy probability for the suspect nodule determined by reference to the tabulated histogram data and the malignancy probability fractions. Other embodiments are also disclosed. | 12-18-2014 |
Patent application number | Description | Published |
20080315105 | Method and Apparatus for Correcting Excess Signals in an Imaging System - A method and apparatus for excess signal compensation in an imaging system is described. In one particular embodiment, the invention provides for non-linear background, offset (due to time dependent dark current) and/or lag (including constant, linear and non-linear terms, due to image persistence) corrections of large area, flat panel imaging sensors. | 12-25-2008 |
20100118166 | METHOD AND APPARATUS FOR EXCESS SIGNAL CORRECTION IN AN IMAGER - A method and apparatus for excess signal compensation in an imaging system is described. In one particular embodiment, the invention provides for non-linear background, offset (due to time dependent dark current) and/or lag (including constant, linear and non-linear terms, due to image persistence) corrections of large area, flat panel imaging sensors. | 05-13-2010 |
20110311025 | METHOD AND APPARATUS FOR CORRECTING EXCESS SIGNALS IN AN IMAGING SYSTEM - A method and apparatus for excess signal compensation in an imaging system is described. In one particular embodiment, the invention provides for non-linear background, offset (due to time dependent dark current) and/or lag (including constant, linear and non-linear terms, due to image persistence) corrections of large area, flat panel imaging sensors. | 12-22-2011 |