| Patent application number | Description | Published |
|---|
| 20080253640 | Method and System for Pet Image Reconstruction Using a Surogate Image - A method and system for use in positron emission tomography, wherein a first processor element ( | 10-16-2008 |
| 20080285828 | Method and System for Pet Image Reconstruction Using Portion of Event Data - A method and system for use in positron emission tomography, wherein a list-based reconstructor means ( | 11-20-2008 |
| 20080312526 | HYBRID PET/MR IMAGING SYSTEMS - A hybrid imaging system includes a magnetic resonance scanner and a second modality imaging system disposed in the same radio frequency isolation space. The second modality imaging system includes radiation detectors configured to detect at least one of high energy particles and high energy photons. In some embodiments a retractable radio frequency screen is selectively extendible into a gap between the magnetic resonance scanner and the second modality imaging system. In some embodiments shim coils are disposed with the magnetic resonance scanner and are configured to compensate for distortion of the static magnetic field of the magnetic resonance scanner produced by proximity of the second modality imaging system. | 12-18-2008 |
| 20080317194 | Pet Imaging Using Anatomic List Mode Mask - A method and apparatus are provided for reconstructing list mode data acquired during a positron emission tomography scan of an object, the data including information indicative of a plurality of detected positron annihilation events. Detected events occurring in a region of interest are identified; the identified events are reconstructed using an iterative reconstruction technique which includes a ray tracing operation to generate volumetric data indicative of the region of interest, wherein the ray tracing operation traces only image matrix elements located in the region of interest; and a human readable image indicative of the volumetric data is generated. In another aspect an image mask and a projection mask are defined correlating to the region of interest; image matrix elements located in the region of interest are determined by applying the image mask; and detected events occurring in a region of interest are identified by applying the projection mask. | 12-25-2008 |
| 20090123042 | OPTIMAL CONVERSION OF 3D IMAGE SETS BETWEEN DIFFERENT SPACES - A multi-modality system ( | 05-14-2009 |
| 20090171183 | PATIENT SCAN TIME OPTIMIZATION FOR PET/SPECT IMAGING - An imaging system ( | 07-02-2009 |
| 20090209844 | PATIENT BED FOR PET/MR IMAGING SYSTEMS - A hybrid imaging system and a patient bed for same are disclosed. The hybrid imaging system includes a magnetic resonance scanner and a second modality imaging system spaced apart from the magnetic resonance scanner by a gap. In some embodiments, the gap is less than seven meters. The patient bed is disposed at least partially in the gap between the magnetic resonance scanner and the second modality imaging system, and includes a linearly translatable patient support pallet aligned to be selectively moved into an examination region of the magnetic resonance scanner for magnetic resonance imaging and into an examination region of the second modality imaging system for second modality imaging. In some embodiments, a linear translation range of the linearly translatable pallet is less than five times a length of the patient support pallet along the direction of linear translation. | 08-20-2009 |
| 20100016715 | ECG-GATED TEMPORAL SAMPLING IN CARDIAC KINETIC MODELING - In a diagnostic imaging system ( | 01-21-2010 |
| 20100040197 | LARGE BORE PET AND HYBRID PET/CT SCANNERS AND RADIATION THERAPY PLANNING USING SAME - An imaging system comprises: a ring of positron emission tomography (PET) detectors; a PET housing at least partially surrounding the ring of PET detectors and defining a patient aperture of at least 80 cm; a coincidence detection processor or circuitry configured to identify substantially simultaneous 511 keV radiation detection events corresponding to electron-positron annihilation events; and a PET reconstruction processor configured to reconstruct into a PET image the identified substantially simultaneous 511 keV radiation detection events based on lines of response defined by the substantially simultaneous 511 keV radiation detection events. Radiation planning utilizing such an imaging system comprises: acquiring PET imaging data for a human subject arranged in a radiation therapy position requiring a patient aperture of at least about 80 cm; reconstructing said imaging data into a PET image encompassing an anatomical region to undergo radiation therapy; and generating a radiation therapy plan based on at least the PET image. | 02-18-2010 |
| 20100054412 | MOTION ESTIMATION IN TREATMENT PLANNING - An apparatus includes a scanner ( | 03-04-2010 |
| 20100135559 | HYBRID MR/PET WITH CORRECTION FOR RADIATION ABSORPTION BY MR COIL - An imaging method comprises: acquiring magnetic resonance data of a subject using a magnetic resonance component ( | 06-03-2010 |
| 20100272335 | IMAGE RECONSTRUCTION USING DATA ORDERING - Methods, systems and apparatuses for processing data associated with nuclear medical imaging techniques are provided. Data is ordered in LUT's and memory structures. Articles of manufacture are provided for causing computers to carry out aspects of the invention. Data elements are ordered into a plurality of ordered data groups according to a spatial index order, and fetched and processed in the spatial index order. The data elements include sensitivity matrix elements, PET annihilation event data, and system and image matrix elements, the data grouped in orders corresponding to their processing. In one aspect geometric symmetry of a PET scanner FOV is used in ordering the data and processing. In one aspect a system matrix LUT comprises total number of system matrix elements equal to a total number of image matrix elements divided by a total number of possible third index values. | 10-28-2010 |
| 20110024636 | MODULAR MULTI-GEOMETRY PET SYSTEM - When performing positron emission tomography (PET) scanning and image reconstruction, a primary PET system ( | 02-03-2011 |
| 20110058722 | USING NON-ATTENUATION CORRECTED PET EMISSION IMAGES TO COMPENSATE FOR INCOMPLETE ANATOMIC IMAGES - When compensating for truncated patient scan data acquired by a multi-modal PET/CT or PET/MR imaging system ( | 03-10-2011 |
| 20110062340 | POSITRON EMISSION TOMOGRAPHY DETECTOR ELEMENTS USING DIFFERENT SIZES OF PHOTOMULTIPLIER TUBES - A positron emission tomography detector module that includes an array of optically isolated crystal elements and photomultiplier tubes that receive light emitted from the array of crystal elements and are arranged to cover the array of crystal elements. The photomultiplier tubes include photomultiplier tubes having two different sizes arranged in various patterns that minimize the number of edges. The axial extent of each detector module is at least three times longer than the other axis of the detector module. | 03-17-2011 |
| 20110064295 | GEOMETRICAL TRANSFORMATIONS PRESERVING LIST-MODE FORMAT - A diagnostic imaging device includes detector elements ( | 03-17-2011 |
| 20110079722 | SYSTEM AND METHOD FOR ENHANCED SAMPLING VIA HELICAL SCANNING AND LIST-MODE RECONSTRUCTION IN POSITRON EMISSION TOMOGRAPHY - A positron emission tomography (PET) scanner system, including a detector that acquires PET event information, the detector being configured to move during acquisition of the PET event information; a first motion unit that acquires first event information of a position of a patient bed, the patient bed being configured to move during acquisition of the PET event information; a second motion unit that acquires second event information of the detector; an event collector that generates an event list of events that includes the PET event information, the first event information, and the second event information; and a list-mode reconstructing unit that reconstructs an image by processing the generated event list. | 04-07-2011 |
| 20110079723 | CONFIGURABLE COINCIDENCE PAIRING AND FILTERING SYSTEM AND METHOD FOR POSITRON EMISSION TOMOGRAPHY - A method of processing positron emission tomography (PET) information obtained from a PET detector having a plurality of detector regions, each detector region having at least one detector module and a corresponding regional collector, the method including the steps of receiving PET event information for a single PET event, the PET event information including energy information and crystal position information of the single PET event; receiving non-detector event information; generating an event list that includes (1) a PET event entry, the PET event entry including a fine time stamp, the energy information, and the crystal position information, and (2) a non-detector event entry that includes the received non-detector event information; and transmitting the generated event list to a computer for off-line processing. | 04-07-2011 |
| 20110105887 | REVERSE DATA RECONSTRUCTION FOR OPTIMAL TIME SAMPLING OF COUNTS IN PHYSIOLOGICAL LIST-MODE NUCLEAR IMAGING - A diagnostic imaging device includes detector elements ( | 05-05-2011 |
| 20110114845 | GAMMA RAY DETECTOR ELEMENTS WITH VARIABLE LIGHT GUIDE THICKNESS - A gamma ray detector module that includes at least one crystal element arranged in a plane, a plurality of light sensors arranged to cover the at least one crystal element and to receive light emitted from the at least one crystal element, and a light guide arranged between the at least one crystal element and the light sensors, the light guide being optically connected to the at least one crystal element. Further, the light guide includes a narrow portion that positions at least one light sensor of the plurality of light sensors closer to the at least one crystal element than other light sensors of the plurality of light sensors. In addition, the light guide may include an angled recessed portion that positions another light sensor at an oblique tilt angle with respect to the plane of the at least one crystal element. | 05-19-2011 |
| 20110155898 | APPARATUS 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 |
| 20110164801 | MR SEGMENTATION USING TRANSMISSION DATA IN HYBRID NUCLEAR/MR IMAGING - When correcting attenuation in a nuclear image (e.g., PET or SPECT), an MR-based attenuation correction (AC) map ( | 07-07-2011 |
