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| Number | Title | Issue Date |
| 8009883 | Method of and system for automatic object display of volumetric computed tomography images for fast on-screen threat resolution A method of and a system for automatic object display of volumetric CT data for fast on-screen threat resolution are disclosed, wherein the CT data includes a CT image in a single energy CT scanner, or a CT image and a Z image in a multi-energy CT scanner, and a lab... | 08/30/2011 |
| 7970096 | Method of and system for low cost implementation of dual energy CT imaging The disclosed CT scanner comprises at least one source of X-rays; a detector array comprising a plurality of detectors; and an X-ray filter mask arrangement disposed between the source of X-rays and detector array so as to modify the spectra of the X-rays transmitte... | 06/28/2011 |
| 7868723 | Power coupling device A power coupling device for coupling power to a rotating member includes a primary magnetic core defining a first recess, and a secondary magnetic core defining a second recess and disposed adjacent the primary magnetic core. The primary and secondary cores are arra... | 01/11/2011 |
| 7801348 | Method of and system for classifying objects using local distributions of multi-energy computed tomography images A method of and a system for identifying objects using local distribution features from multi-energy CT images are provided. The multi-energy CT images include a CT image, which approximates density measurements of scanned objects, and a Z image, which approximates ... | 09/21/2010 |
| 7724866 | Method of and system for variable pitch computed tomography scanning for baggage screening A method of and a system for variable pitch CT scanning for baggage screening and variable pitch image reconstruction are disclosed. The method comprises decelerating conveyor belt speed when additional time is needed to render a decision on a complex bag; accelerat... | 05/25/2010 |
| 7692650 | Method of and system for 3D display of multi-energy computed tomography images A method of and a system for displaying volumetric multi-energy CT images are disclosed, wherein a CT image, a Z image, and a label image from an automatic explosive detection are provided, are disclosed. The method comprises generating an index image through a nonl... | 04/06/2010 |
| 7664543 | CT scanner for and method of imaging a preselected portion of the lower abdomen region of a patient A CT scanner and method are designed to scan a preselected portion of a patient's lower abdomen. The scanner may include a source and detector array designed to rotate about a rotation axis oriented substantially parallel to or coincident with the hips of the a pati... | 02/16/2010 |
| 7638732 | Apparatus and method for making X-ray anti-scatter grid An apparatus including a base, a linkage extending along a second axis and pivotally connected to the base for pivotal movement about a first axis perpendicular to the second axis, a leg having a first end pivotally connected to the linkage for pivotal movement abou... | 12/29/2009 |
| 7582879 | Modular x-ray measurement system An x-ray detector assembly includes a first substrate and a second substrate. An array of photodetectors, which have coplanar contacts, are disposed on the top surface of the first substrate. The x-ray detector assembly further includes a plurality of x-ray scintill... | 09/01/2009 |
| 7573408 | Method and system for correcting switched input A/D converters A system is described for correcting a switched input A/D converter circuit that performs a plurality of A/D conversions. The system includes an oversampling circuit, a switched input controller, separation circuitry, and a signal processing subsystem. The oversampl... | 08/11/2009 |
| 7539337 | Method of and system for splitting compound objects in multi-energy computed tomography images A method of and a system for splitting a compound object using multi-energy CT data including a density and an atomic number measurements are provided. The method comprises: compound object detection; computing a two-dimensional DZ distribution of a compound object;... | 05/26/2009 |
| 7474786 | Method of and system for classifying objects using histogram segment features of multi-energy computed tomography images A method of and a system for identifying objects using histogram segment features from multi-energy CT images are provided. The multi-energy CT images include a CT image, which approximates density measurements of scanned objects, and a Z image, which approximates e... | 01/06/2009 |
| 7431500 | Dynamic exposure control in radiography A method and system is presented in radiography for optimizing image quality of an object (e.g. an anatomical region of a patient), while minimizing the radiation dose to the patient. X-ray exposure parameters, such as operating voltage (kVp), operating current (mA)... | 10/07/2008 |
| 7415147 | Method of and system for destreaking the photoelectric image in multi-energy computed tomography A method of and a system for destreaking the photoelectric image in multi-energy computed tomography are provided, wherein the photoelectric projections are generated from the projection data acquired using at least two x-ray spectra for scanned objects; wherein a n... | 08/19/2008 |
| 7388983 | Method of and system for detecting anomalies in projection images generated by computed tomography scanners A method of and a system for detecting anomalies in projection images generated by CT scanners are provided. One type of anomaly of particular interest is bright or/and dark dots in projection images, which correspond to streak artifacts in the CT images. The method... | 06/17/2008 |
| 7327853 | Method of and system for extracting 3D bag images from continuously reconstructed 2D image slices in computed tomography A method of and a system for extracting 3D bag images from continuously reconstructed 2D image slices are provided. The method detects the boundaries of baggage in the reconstructed images, and provides better flexibilities for threat detection and displaying. The m... | 02/05/2008 |
| 7302083 | Method of and system for sharp object detection using computed tomography images A method of and a system for sharp object detection using computed tomography images are provided. The method comprises identifying voxels corresponding to individual objects; performing eigen-analysis and generating eigen-projection of an identified object; computi... | 11/27/2007 |
| 7277577 | Method and system for detecting threat objects using computed tomography images A method of and system for detecting threat objects represented in 3D CT data uses knowledge of one or more predefined shapes of the threat objects. An object represented by CT data for a region is identified. A two-dimensional projection of the object along a princ... | 10/02/2007 |
| 7230555 | Sigma delta converter with flying capacitor input A sigma delta analog to digital converter of the type adapted to be connected to a capacitive current input device, comprises: a sigma delta modulator having an input; and a flying capacitor constructed so as to be connected between the input of the sigma delta modu... | 06/12/2007 |
| 7224763 | Method of and system for X-ray spectral correction in multi-energy computed tomography A method of and a system for spectral correction in multi-energy computed tomography are provided to correct reconstructed images, including high-energy CT images and Z (effective atomic number) images, for spectral variations, which include time variations on a sca... | 05/29/2007 |
| 7215806 | Adaptive iterative bone correction in computerized tomography A method of performing bone correction on a computerized tomography (CT) image includes the steps of: A. generating a reconstructed CT image of a bone-containing portion of a patient's body, the reconstructed CT image including a b... | 05/08/2007 |
| 7197172 | Decomposition of multi-energy scan projections using multi-step fitting A method of decomposition of projection data is provided, wherein such projection data includes input projection data acquired using at least two x-ray spectra for a scanned object, including low energy projection data (PL) and high energy projection data... | 03/27/2007 |
| 7190757 | Method of and system for computing effective atomic number images in multi-energy computed tomography A method of and a system for computing Z (effective atomic number) images from projection data are provided, wherein the projections are acquired using at least two x-ray spectra for a set of scanned objects, including a set of low energy projections and a set of hi... | 03/13/2007 |
| 7180978 | Mammography unit positioning system and method A system for positioning a mammography unit includes a C-arm, an x-ray tube mounted at one end of the C-arm, and a compressor-Bucky assembly mounted at an opposite end of the C-arm. The compressor-Bucky assembly includes a film receptor (preferably a Bucky grid) and... | 02/20/2007 |
| 7174587 | Patient positioning device for radiation therapy A patient positioning system for radiation therapy, including an elongated table, a lock bar positioned on the table and extending perpendicular to a length of the table, and first and second clamps secured to opposing ends of the lock bar. The clamps are adapted to... | 02/13/2007 |
| 7161155 | X-ray detector with increased detective quantum efficiency An x-ray detector having an increased DQE (detective quantum efficiency) is provided. The x-ray detector includes a scintillator for converting incident x-ray photons into optical photons, and an epitaxial p-i-n photodiode for converting these optical photons into a... | 01/09/2007 |
| 7151817 | X-ray inspection systems with improved radiation attenuation shielding Arrangements of X-ray inspection systems are described. An X-ray inspection system may include a shielded housing with a tunnel passageway and entrance and exit ports. The system may include an X-ray inspection station defining a rectilinear coordinate system, an X-... | 12/19/2006 |
| 7136451 | Method of and system for stabilizing high voltage power supply voltages in multi-energy computed tomography A method of and a system for stabilizing High Voltage Power Supply (HVPS) DC and AC voltages in multi-energy X-ray computed tomography scanners are provided. The method comprises generating filter ratios, computing DC and AC voltages, and feeding back the computed D... | 11/14/2006 |
| 7136450 | Method of and system for adaptive scatter correction in multi-energy computed tomography Method of and system for adaptive scatter correction in the absence of scatter detectors in multi-energy computed tomography are provided, wherein input projection data acquired using at least two x-ray spectra for scanned objects may include a set of low energy pro... | 11/14/2006 |
| 7116758 | Potter-bucky grid with counter-weight A Potter-Bucky device for a radiation image recording apparatus in which an image recording medium is exposed to radiation which has passed through an object in order to record a radiation image of the object on the recording medium includes a grid which is movably ... | 10/03/2006 |
| 7113120 | Charge transfer system and method A charge transfer system includes a current-based input device for generating an input current signal, a temporary energy storage device, and an amplification device. A switching device couples the temporary energy storage device to the current-based input device du... | 09/26/2006 |
| 7077569 | Apparatus and method for supporting pallet extending from patient table An apparatus for supporting a pallet extending horizontally from a patient table, including a horizontally extended pallet support for supporting a horizontally extendable pallet of a patient table, and a lifting assembly for vertically supporting the pallet support... | 07/18/2006 |
| 7072434 | Carry-on baggage tomography scanning system A tomography scanner system including a gantry having an outer, non-rotating support ring, and an inner rotatable component ring supported for rotation within the support ring about a rotation axis of the gantry. An x-ray source and an x-ray detector array are secur... | 07/04/2006 |
| 7072446 | Method for making X-ray anti-scatter grid A method for manufacturing an anti-scatter grid including arranging a plurality of elongated metal ribbons of radio-opaque material so that each ribbon is substantially straight and lies in a plane that passes through a focal point of the grid, and placing the elong... | 07/04/2006 |
| 7062011 | Cargo container tomography scanning system An X-ray computed tomography scanning system adapted to scan air cargo containers or other larger containers for detection of explosives, drugs, and other contraband. The system includes a table that rotates about an axis of rotation for supporting a cargo container... | 06/13/2006 |
| 7062009 | Helical interpolation for an asymmetric multi-slice scanner A helical interpolation filter is provided for a multi-slice scanner having an asymmetric detector array. For projection data generated in the symmetric region of the scanner, in which complementary data are available, complementary interpolation is performed. For p... | 06/13/2006 |
| 7020233 | Dual gantry bearing for combined tomography scanner A frame for a tomography scanner system includes a gantry having two, separate annular inner races supported for independent rotation within an annular outer support, wherein the inner races are for respectively supporting x-ray CT scanner components and PET scanner... | 03/28/2006 |
| 6996286 | Sweeping spatial filter system and method A method of providing a spatially filtered version of an image by selectively modifying image pixel amplitudes as a predetermined function of spatial frequency components of the image pixels includes dividing an overall frequency range of the image into a plurality ... | 02/07/2006 |
| 6960020 | Image positioning method and system for tomosynthesis in a digital X-ray radiography system The present invention provides a method and system for determining the position of the image of a target object or the position of the x-ray source in digital tomosynthesis, as the x-ray source is moved relative to the object so as to obtain multiple two-dimensional... | 11/01/2005 |
| 6955464 | Horizontal drive apparatus and method for patient table A patient table including an elongated table assembly extending between opposing ends, an elongated pallet mounted on the table assembly for linear motion between the opposing ends of the table assembly, and an elongated horizontal drive apparatus including a rotary... | 10/18/2005 |
