Object Positioning Or Aligning Patents (Class 378/20)
  • Publication number: 20120209109
    Abstract: The invention comprises an X-ray tomography method and apparatus used in conjunction with multi-axis charged particle or proton beam radiation therapy of cancerous tumors. In various embodiments, 3-D images are generated from a series of 2-D X-rays images; the X-ray source and detector are stationary while the patient rotates; the 2-D X-ray images are generated using an X-ray source proximate a charged particle beam in a charged particle cancer therapy system; and the X-ray tomography system uses an electron source having a geometry that enhances an electron source lifetime, where the electron source is used in generation of X-rays. The X-ray tomography system is optionally used in conjunction with systems used to both move and constrain movement of the patient, such as semi-vertical, sitting, or laying positioning systems. The X-ray images are optionally used in control of a charged particle cancer therapy system.
    Type: Application
    Filed: February 16, 2012
    Publication date: August 16, 2012
    Inventor: Vladimir Balakin
  • Publication number: 20120189095
    Abstract: A patient table (1) usable in an X-ray image acquisition arrangement (100) is proposed. The patient table (1) comprises a table plate (3) being connected to a table base (5) via at least one movable joint (9), wherein the table plate (3) is movable using at least one actuator (11). In order to set or re-establish an accurate position/orientation of the movable table plate (3), the patient table comprises a positioning system including a first sensor arrangement (15) for providing position data of the at least one movable joint (9) and a second sensor arrangement (17) for providing position data of the table plate (3), e.g. by tracking at least one marker (21) attached to the table plate (3). Using such patient table (1) may allow for accurately automatically positioning the table plate (3). Furthermore, the accurate position data provided by the second sensor arrangement (17) may be used in a method for improved three-dimensional roadmapping.
    Type: Application
    Filed: September 28, 2010
    Publication date: July 26, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: Daniel Simon Anna Ruijters
  • Patent number: 8229061
    Abstract: In an X-ray computer tomograph and a method for examining a component by means of X-ray computer tomography, the component carries out a movement relative to a radiation source detector unit in at least two degrees of freedom of movement, so at least one trajectory can be produced which spans a three-dimensional space. Since the X-radiation has a three-dimensional radiation geometry, volume data can be rapidly obtained and precisely reconstructed to form a three-dimensional X-ray image. The component can be geometrically measured by means of a geometry detection unit.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: July 24, 2012
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Randolf Hanke, Theobald Fuchs, Tobias Schön, Michael Maisl, Stefan Kasperl
  • Patent number: 8226295
    Abstract: In various exemplary embodiments, a targeting device providing a visible indication of an invisible beam is disclosed. The invisible beam, such as an x-ray beam, is emitted by a radiation source on a medical imaging system. The targeting device includes, for example, an illumination source to produce a visible beam and operate at one or more wavelengths. The illumination source, which is opaque to the x-ray beam and would ordinarily cause shadows on the imaging system, is arranged to be mounted outside of a field-of-view of the invisible beam. A beam reflector is mounted next to the illumination source. The beam reflector is fabricated from a material invisible to x-rays and is arranged to be mounted within the field-of-view of the invisible beam. The beam reflector redirects the visible beam produced by the illumination source such that the visible beam is parallel to the field-of-view of the invisible beam.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: July 24, 2012
    Assignee: Thompson Laser Company, LLC
    Inventors: Gerald D. Thompson, Greg K. Thompson, Erin M. Thompson
  • Patent number: 8223920
    Abstract: The present invention is related to a patient positioning imaging device for positioning a patient in a hadron therapy device provided with a rotatable gantry (20). The patient positioning imaging device comprises a rotatable structure (10) provided with an extensible arm or foldable pivoting arm (12) arranged for connecting an imaging beam source (121) and an extensible structure or foldable pivoting structure (14) arranged for carrying an imaging beam receiver (141). The rotatable structure (10) is arranged for taking CBCT shots of the patient while the patient is located in an offset position with respect to an isocentre of the hadron therapy device, said offset position being in the direction of a rotational axis of the rotatable gantry (20). The rotatable structure (10) is arranged for being rotated while the rotatable gantry (20) remains fixed, and while the extensible or pivoting arm (12) and the extensible or pivoting structure (14) are in extended or unfolded position.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: July 17, 2012
    Assignee: Ion Beam Applications SA
    Inventors: Jean-Claude Amelia, Frédéric Genin
  • Patent number: 8224056
    Abstract: A method and system for motion estimation and compensation are disclosed. Initially, a set of one or more initial images is reconstructed using acquired imaging data. Further, one or more regions of interest are identified in this set of reconstructed initial images. At least a set of filters is applied to the identified regions of interest to generate a sequence of filtered images. Particularly, each of the filtered images in the generated sequence of filtered images includes data acquired near a different reference point. Subsequently, a motion path corresponding to each region of interest is determined based on one or more correspondences in the sequence of filtered images.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: July 17, 2012
    Assignee: General Electronic Company
    Inventors: Jed Douglas Pack, Peter Michael Edic, Bernhard Erich Hermann Claus, Maria Iatrou, James Vradenburg Miller
  • Publication number: 20120170710
    Abstract: A patient support surface, patient support system in combination with a CT scanner, and method of installing a patient support system for a surgical procedure is provided. The patient support surface includes a radiolucent elongate first member having laterally spaced first side members extending between opposite ends with a plurality of cross members extending between the first side members. The support surface further includes an elongate second member having laterally spaced second side members extending between opposite ends with a plurality of cross members extending between the second side members. One of the opposite ends of the first member is configured for attachment to one of the ends of the second member. The other of the opposite ends of the first member is configured for attachment to a first support, and the other of the opposite ends of the second member is configured for attachment to a second support.
    Type: Application
    Filed: November 7, 2011
    Publication date: July 5, 2012
    Inventors: James H. Niedzielski, Gary E. Terrill, Brian J. Knoch
  • Patent number: 8213565
    Abstract: A method for correcting truncated projection data of a rotation for a reconstruction technique for computed tomography scans with truncated projection data in the computed tomography images produced by a C-arm is proposed. At least one truncated projection is recorded. The truncated portions prior to acquisition of the rotation for the at least one truncated projection is captured. The truncated projection and the truncated portions are assembled into at least one complete projection. Truncated projection data is acquired during the rotation. The truncated data is estimated based on a model of the patient geometry from the at least one complete projection. A reconstruction technique is performed on the basis of the acquired and the estimated data.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: July 3, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jan Boese, Klaus Klingenbeck
  • Publication number: 20120155607
    Abstract: A belt table is provided. The belt table includes a cradle, and a movement driver set configured to drive the cradle to move, wherein the cradle and the movement driver set are configured to cause at least one of low attenuation and nearly zero attenuation to X-rays along a scan plane.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 21, 2012
    Applicant: GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC
    Inventors: Xiaoyan ZHANG, Hailiang LIU, Xuyong YANG, Xueli WANG
  • Publication number: 20120155606
    Abstract: A marine device has a floating buoy containing electronics, a submerged payload containing electrical devices and electronics, a power source and a mooring line. At least a part of the power source is submerged and electrically connected to at least one of the submerged payload and the floating buoy, and the mooring line extends between the buoy and at least one of the power source submerged part, the submerged payload and a submerged anchor having a mass allowing it to stay under the water surface.
    Type: Application
    Filed: April 30, 2010
    Publication date: June 21, 2012
    Applicant: WENZEL VOLUMETRIK GMBH
    Inventors: Martin Simon, Siegfried Heeg, Ralf Hock, Manfred Etzel, Uwe Hilpert, Severin Ebner
  • Publication number: 20120148015
    Abstract: A computer tomography device for non-medical applications, in particular a non-medical material or workpiece test, having a sensor carrier unit comprising a plurality of individual pixels provided adjacent to one another, said sensor carrier unit being designed to detect invasive radiation of an x-ray radiation source by a detector surface. The detector surface extends in at least one plane in the shape of an arc, wherein the sensor carrier unit has a contour that is arced at least in sections and/or comprises a plurality of individual detector elements (20) arranged in a faceted shape, each comprising a flat detector surface (3), disposed adjacent to and/or adjoining one another along an arced line (6), and an object carrier, designed as a rotary plate (30), for a workpiece to be subjected to tomographic inspection is provided in a beam path between the x-ray radiation source (1) and the sensor carrier unit.
    Type: Application
    Filed: August 5, 2010
    Publication date: June 14, 2012
    Applicant: Wenzel Volumetrik GmbH
    Inventor: Martin Simon
  • Publication number: 20120150034
    Abstract: A multi-modality cancer screening and diagnosis system is provided that allows cancer screening and diagnosis of a patient using at least two different and sequential three-dimensional imaging techniques without patient repositioning. The system includes a first three-dimensional image acquisition device, a second three-dimensional image acquisition device having a probe with a transmitter mounted thereon, and a positioning paddle for positioning and immobilizing an object to be imaged during the cancer screening and diagnosis procedure. The positioning paddle is designed to facilitate visualization of the breast in both three-dimensional modalities without movement of the patient, and preferably is designed to position the patient with comfort during a diagnosis procedure which uses both imaging modalities.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 14, 2012
    Inventors: Kenneth F. DeFreitas, Ian Shaw
  • Publication number: 20120145909
    Abstract: Disclosed is radiation tomography apparatus for smaller animals including a radiation source for emitting radiation; a radiation detecting device for detecting radiation; a rotary device for rotating the radiation source; and a holder provided between the radiation source and the radiation detecting device that has two or more spaces for placing a subject. The holder includes space discriminating members for each of the spaces. Each of the space discriminating members has a unique sectional shape when cut along a plane where an imaginary circle exists. Here, the imaginary circle is a locus of rotation of the radiation source.
    Type: Application
    Filed: November 15, 2011
    Publication date: June 14, 2012
    Inventor: Hiromichi Tonami
  • Publication number: 20120140876
    Abstract: Provided is a diagnostic method and system capable of applying tomography to industrial long cylindrical process systems, such as a pipe line, which are difficult to diagnose using existing medical or industrial computed tomography (CT) scanners. Existing industrial X-ray CT scanners cannot be used for such a pipe that is attached to the process system and thus cannot be placed on the turntable, and existing image diagnostic apparatuses of a fan beam type, a collimated beam type, etc. having a stereotyped structure are next to impossible to move and use for undetachable process systems and their peripheral devices. To solve these problems, there is provided a gamma-ray tomography scanning system that is capable of being directly attached to a pipe in operation and measuring a cross section of the pipe.
    Type: Application
    Filed: October 20, 2011
    Publication date: June 7, 2012
    Applicants: KOREA ATOMIC ENERGY RESEARCH INSTITUTE, KOREA HYDRO AND NUCLEAR POWER CO., LTD
    Inventors: Sung-Hee Jung, Jong-bum Kim, Jinho Moon
  • Patent number: 8180130
    Abstract: A method and system of determining a radial distance (R), an angular position (?), and an axial position (Z) of a marker identified in a sequence of projection images. A marker three-dimensional localization module (executable by the electronic processing unit) obtains a sequence of images based on image data generated by a scanner. Each image in the sequence of images represents an angle of rotation by the scanner and includes a marker point position. The behavior of first values and second values of the marker point positions are analyzed through the sequence of images to determine the radial distance of the marker, the angular position of the marker, and the axial position of the marker allowing for rapidly detecting and localizing external markers placed on a patient in projection images.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: May 15, 2012
    Assignee: Imaging Sciences International LLC
    Inventor: David Sebok
  • Publication number: 20120114095
    Abstract: A multi-mode system and method for imaging a patient's breast with x-rays in one or more of a CT mode, a narrow-angle tomosynthesis mode, a wide angle tomosynthesis mode, and a mammography mode, using essentially the same equipment, on one or more compressions or immobilizations of the breast.
    Type: Application
    Filed: October 5, 2011
    Publication date: May 10, 2012
    Applicant: HOLOGIC, INC.
    Inventors: Andrew Paul Smith, Jay A. Stein, Ken Defreitas, Ian Shaw, Zhenxue Jing, Loren Niklason, Baorui Ren, Christopher Ruth
  • Patent number: 8175220
    Abstract: A multi-modality imaging system includes a first imaging system and a second imaging system that is different from the first imaging system. The first and second imaging systems are slidingly mounted on at least one rail. A table has a movable pallet configured to extend through a scan range of the first imaging system while the first and second imaging systems are positioned proximate each other at one position along the at least one rail. The pallet is further configured to extend through a scan range of the second imaging system while the first and second imaging systems are positioned proximate each other at a different position along the at least one rail. At least a portion of the scan ranges overlap each other.
    Type: Grant
    Filed: August 5, 2008
    Date of Patent: May 8, 2012
    Assignee: General Electric Company
    Inventors: Alexander Vaisburd, Leonid Yakubovsky, Dor Perry
  • Publication number: 20120104264
    Abstract: Apparatus for imaging an object, the apparatus comprising: an imaging device configured to image the object while the object is supported on a support, the support comprising a base for positioning on a surface, wherein the object and the support are stationary relative to the surface, and further wherein the imaging device is adapted to move relative to the surface, and hence relative to the object and to the support, during imaging; the imaging device comprising a housing having a bottom notch sized to accommodate the base of the support, whereby to allow the base of the support to extend into the housing during imaging.
    Type: Application
    Filed: September 30, 2011
    Publication date: May 3, 2012
    Inventors: Eric Bailey, Andrew Tybinkowski
  • Patent number: 8170176
    Abstract: An imaging-condition setting part that sets a plurality of CT-image imaging conditions, including an electric amount for driving and controlling an X-ray tube during CT imaging, based on a scout image that has been imaged by irradiating X-rays from the X-ray tube, to a subject on a top board, that has been stopped at least one of said first position and said second position; and a calculating part that judges whether there are any detection elements that are expected to detect an X-ray dosage exceeding a predetermined value and outputs the judgment result when the X-ray tube is stopped at least one of the first position and the second position relative to the subject on the top board and X-rays are irradiated from the X-ray tube through driving and controlling based on the electric amount.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: May 1, 2012
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventor: Nobukatsu Soejima
  • Patent number: 8165372
    Abstract: An information processing apparatus to register an ultrasonic image and a three-dimensional medical image at high speed is disclosed. The information processing apparatus includes: a medical image acquisition unit which acquires a medical image captured by a medical imaging apparatus in which an imaging unit captures an image of an object at a non-contact position with respect to the object, an ultrasonic image acquisition unit which acquires an ultrasonic image captured by an ultrasonic imaging apparatus in which an ultrasonic probe captures an image of the object at a position in contact with a surface of the object, and a coordinate transformation unit which transforms coordinates of the medical image or ultrasonic image with reference to the contact position on the ultrasonic image, so that image information of the medical image matches that of the ultrasonic image.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: April 24, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryo Ishikawa, Kiyohide Satoh, Shinji Uchiyama
  • Patent number: 8144832
    Abstract: The invention comprises an X-ray tomography method and apparatus used in conjunction with multi-axis charged particle or proton beam radiation therapy of cancerous tumors. In various embodiments, 3-D images are generated from a series of 2-D X-rays images; the X-ray source and detector are stationary while the patient rotates; the 2-D X-ray images are generated using an X-ray source proximate a charged particle beam in a charged particle cancer therapy system; and the X-ray tomography system uses an electron source having a geometry that enhances an electron source lifetime, where the electron source is used in generation of X-rays. The X-ray tomography system is optionally used in conjunction with systems used to both move and constrain movement of the patient, such as semi-vertical, sitting, or laying positioning systems. The X-ray images are optionally used in control of a charged particle cancer therapy system.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: March 27, 2012
    Inventor: Vladimir Balakin
  • Publication number: 20120057671
    Abstract: A system and method for monitoring a guided intervention device includes determining (306) a position of an intervention device inside a subject using a radiation source to image the intervention device. A circular acquisition is performed (304) to update the position of the intervention device wherein the acquisition includes skipping view angles by turning off a radiation source at given angular positions. A model of the intervention device is generated (308) to provide a virtual image of the intervention device against a background of the subject. Movement of the intervention device is modeled (310) during the skipped view angles to provide substantially real-time tracking of the intervention device.
    Type: Application
    Filed: May 5, 2010
    Publication date: March 8, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Michael Grass, Eberhard Sabastian Hansis
  • Publication number: 20120027167
    Abstract: A substantially X-ray transparent animal restraint enclosure having an open base structure and a lid which is configured to substantially close the base structure. The lid is movable from a closed position to an open position to permit the introduction of an animal into the base structure. The base structure has an open-ended slot which is partially obstructed when the lid is closed. The base structure also has an aperture which is not obstructed by the lid. A veterinary CT scan apparatus includes a CT scan gantry or sensor ring, a CT scan table, and a substantially X-ray transparent animal restraint enclosure. A method of performing a CT scan on an animal in a CT scan apparatus having a patient target position is achieved by placing the animal in substantially X-ray transparent enclosure; placing the enclosure in the patient target position for the CT scan; and conducting the CT scan.
    Type: Application
    Filed: June 28, 2011
    Publication date: February 2, 2012
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Robert T. O'Brien, Gerald J. Pijanowski
  • Publication number: 20110317807
    Abstract: Methods, computer-readable mediums, and systems are provided. In one embodiment, a method detects at least one faulty X-ray detector signal and adjusts a conveyor speed and/or a gantry speed in accordance with the detection to increase information for image reconstruction. In another embodiment, a method detects a high volume time. Upon detection of the high volume time conveyor speed and gantry speed is increased during the high volume time. After expiration of the high volume time, the conveyor speed and gantry speed is reduced. In yet other embodiments, the computer-readable mediums and systems are also provided which perform similar features recited by the above methods.
    Type: Application
    Filed: September 8, 2011
    Publication date: December 29, 2011
    Inventors: Ronald Alan Gatten, Ugo DiGirolamo
  • Publication number: 20110311020
    Abstract: An image diagnosis apparatus and method may emit radiation to a target object, may compress the target object in response to the emitted radiation, and may collect a plurality of images with respect to the compressed target object in response to the emitted radiation. An elastic image with respect to the target object may be generated based on the plurality of collected images.
    Type: Application
    Filed: May 12, 2011
    Publication date: December 22, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jong Ha Lee, Dong Goo Kang, Sung Su Kim, Young Hun Sung, Seok Min Han, Kwang Eun Jang
  • Patent number: 8050473
    Abstract: An improved method of segmenting medical images includes aspects of live wire and active shape models to determine the most likely segmentation given a shape distribution that satisfies boundary location constrains on an item of interest. The method includes a supervised learning portion to train and learn new types of shape instances and a segmentation portion to use the learned model to segment new target images containing instances of the shape. The segmentation portion includes an automated search for an appropriate shape and deformation of the shape to establish a best oriented boundary for the object of interest on a medical image.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: November 1, 2011
    Assignee: The Trustees Of The University Of Pennsylvania
    Inventors: Jayaram K. Udupa, Jaimin Liu
  • Patent number: 8045677
    Abstract: It is described a method for acquiring a series of two-dimensional X-ray attenuation data of an object under examination (310) by means of an X-ray imaging apparatus (100) having a rotatable scanning unit (301). In order to increase the angular range of the scanning unit (301), when a region of interest (HOa) located not in the center of the object (310) is examined the object under examination (310) is shifted such that the region of interest is temporarily positioned outside the center of rotation. By coupling the rotational movement of the scanning unit (301) with the translative movement of the object (310) in a synchronized manner a collision between the scanning unit (301) and the object (310) can be effectively avoided. By employing an automated motorized object table (312) a precise pre-determined movement of the object (310) can be achieved during the data acquisition.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: October 25, 2011
    Assignee: Koninklijke Philips Electronics N V Eindhoven
    Inventors: Babak Movassaghi, Robert Manzke, Joel Alberto Garcia
  • Patent number: 8041002
    Abstract: Methods, computer-readable mediums, and systems are provided. In one embodiment, a method detects at least one faulty X-ray detector signal and adjusts a conveyor speed and/or a gantry speed in accordance with the detection to increase information for image reconstruction. In another embodiment, a method detects a high volume time. Upon detection of the high volume time conveyor speed and gantry speed is increased during the high volume time. After expiration of the high volume time, the conveyor speed and gantry speed is reduced. In yet other embodiments, the computer-readable mediums and systems are also provided which perform similar features recited by the above methods.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: October 18, 2011
    Assignee: Morpho Detection, Inc.
    Inventors: Ronald Alan Gatten, Ugo DiGirolamo
  • Patent number: 8032204
    Abstract: This document discusses, among other things, fiducial marker devices, tools, and methods. One example illustrates a combined computed tomography (CT) imageable fiducial locator head, an integral bone screw, and an integral divot for receiving a positioning wand of an image-guided surgical (IGS) workstation. A further example includes a fluid/gel-absorbing coating or cover into which a magnetic resonance (MR) imageable fluid is introduced, thereby permitting both CT and MR imaging. Protective caps and collars may be used to protect the fiducial marker from mechanical impact and/or to guide the fiducial marker during affixation. A bull's-eye or other template is used to select a center of a substantially spherical fiducial marker head on an image, such as for use during patient registration.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: October 4, 2011
    Assignee: Medtronic, Inc.
    Inventors: Matthew S. Solar, Thomas L. Bridges, David M. Lee, Mark S. Freas
  • Patent number: 8030629
    Abstract: The invention relates to an adaptive optical device for the reflection of impinging radiation, the adaptive optical device comprising at least one actuator and at least one partially reflective volume. The at least one partially reflective volume has a first surface that is oriented to the impinging radiation. The at least one partially reflective volume is at least partially deformable by said at least one actuator such that the impinging radiation is reflected at the at least one partially reflective volume substantially in accordance with Bragg's law. Further, the invention relates to a method and apparatus for controlling the shape of an adaptive optical device.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: October 4, 2011
    Assignee: Westfälische Wilhelms-Universität Münster
    Inventors: Zacharias Helmut, Martin Silles
  • Patent number: 8027427
    Abstract: A method for scanning a stream of objects includes continuously acquiring raw data of the stream of objects using an X-ray system, that includes a detector. The raw data of the stream of objects is rebinned into at least one two-dimensional sinogram. A leading edge and a trailing edge of a first object of the stream of objects is determined from the at least one two-dimensional sinogram and a three-dimensional image of the first object is reconstructed using the at least one two-dimensional sinogram.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: September 27, 2011
    Assignee: Morpho Detection, Inc.
    Inventors: Samit Kumar Basu, Eugene Alex Ingerman
  • Publication number: 20110228901
    Abstract: An apparatus for cone beam computed tomography of lower leg portions of a patient has a radiation source and a source transport actuable to move the source along an arcuate source path within a housing, from one side of a circumferential gap to the other and has a radius R2 about a center. A housing is provided for placement of the patient's foot. A digital radiation detector has a detector transport actuable to move the detector along an arcuate detector path within the housing, the detector path having a radius R1 about the center and concentric with the source path, wherein R1 is less than R2, and wherein the detector path extends from one side of the pedestal indent to the other. A gap closure apparatus is movable to a position that continues the detector path across the circumferential gap and encloses the detector path.
    Type: Application
    Filed: March 31, 2011
    Publication date: September 22, 2011
    Inventors: John Yorkston, William F. Snyder, Jeffrey H. Siewerdsen
  • Publication number: 20110222651
    Abstract: There is provided an inverter circuit which allows a single drive circuit to carry out both the tracking control for tracking resonance frequency fluctuations caused by load fluctuations, and the power control, thereby reducing switching loss. An inverter drive circuit part obtains a phase difference between output current and output voltage directed to a load circuit which is connected to a midpoint of two arm circuits of the inverter circuit, and controls a phase of the driving signal directed to each of the semiconductor switches in such a manner that the phase difference becomes zero or a predetermined value. This allows an operating frequency of the inverter circuit part to track a resonance frequency of the load circuit. In addition, this enables a current phase to be delayed with respect to a voltage phase, thereby achieving ZCS.
    Type: Application
    Filed: November 5, 2009
    Publication date: September 15, 2011
    Applicants: HITACHI MEDICAL CORPORATION, Institute of National Colleges of Technology, Japan, National University Corporation Nagaoka University of Technology
    Inventors: Mina Ogawa, Itaru Ando, Kiyoshi Ohishi, Shoutaro Shindo
  • Publication number: 20110222650
    Abstract: A laminography system includes a first linear guide defining a z-direction of a Cartesian coordinate system and an imaging radiation source fixable to the first linear guide and movable along the first linear guide. The radiation source is configured to form a cone of rays including a central ray defining a y-axis of the Cartesian coordinate system. A detector is disposed in a position so as to be struck at a center thereof by the central ray of the radiation source substantially in an x-direction of the Cartesian coordinate system. The system also includes a first rotation device configured to rotate the detector about a first axis of rotation that is parallel to a z-axis of the Cartesian coordinate system and that passes through an intersection of the central array and the detector. The detector is fixable to a second linear guide and is movable on the second linear guide along the first axis of rotation. An object slide is disposed between the radiation source and the detector.
    Type: Application
    Filed: March 7, 2011
    Publication date: September 15, 2011
    Applicant: YXLON INTERNATIONAL GMBH
    Inventor: Martin Muenker
  • Patent number: 8009886
    Abstract: Certain embodiments of the present invention provide for a system and method for performing medical image registration. Pixel and voxel correspondences are formulated as energy minimization problems and are optimized with graph cuts. The method includes processing a first set of data and a second set of data using a graph cuts algorithm to determine a minimum value of an energy function. The energy function has a data term and a smoothness term. The method also includes performing registration for the first set of data and the second set of data based on the data term and the smoothness term of the energy function. The system includes a computer system for performing medical image registration. The computer system comprises a processor and a memory in communication with the processor. The memory includes program code executable by the processor for executing a medical image registration algorithm.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: August 30, 2011
    Assignee: General Electric Company
    Inventors: Shou Li, Prakash Mahesh, Dave Roeder, Greg Garvin
  • Patent number: 8005186
    Abstract: A dental complex imaging system includes a base and chair on the base for allowing a patient sit; a base-mounted pole adjacent to the chair; a support part extending toward the patient; an expanding and contracting part pivotally coupled to the support part; a radiation generator that moves with the part for emitting radiation for an imaging mode selected from cephalography, panoramic radiography, and CT scanning; a detector disposed on the other side of the part and opposed to the generator; and a controller for reading imaging information, wherein the generator is disposed to slide to adjust a distance between itself and the detector according to the imaging mode while the patient sits on the chair.
    Type: Grant
    Filed: September 21, 2007
    Date of Patent: August 23, 2011
    Assignee: Ray Co., Ltd.
    Inventor: Sang Chul Lee
  • Patent number: 8002465
    Abstract: The system provides new ways to ensure that a patient is positioned correctly, e.g. identically with an original planning scan if the patient is to undergo radiotherapy. The system also detects if there is patient movement during a scan. It is an aspect of the present method to immobilize the patient based on a specific site of interest by using positioning sensors that record patient physical orientation based on measurements of patient weight distribution and pressure distribution among other features.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: August 23, 2011
    Assignee: Pyronia Medical Technologies, Inc.
    Inventor: Peter Hyung-Kyun Ahn
  • Publication number: 20110188627
    Abstract: According to one embodiment, a CT scanning tabletop includes a tabletop body and an aid. The tabletop body has a placement surface where a subject is to be placed, and is formed in a manner that an X-ray transmission loss by one end portion in a longitudinal direction thereof is smaller than an X-ray transmission loss by a portion of the tabletop body other than the one end portion. The aid is provided on the one end portion in a manner that the aid is attachable and detachable by moving in advancing and retreating directions toward and away from the placement surface, the aid is configured to hold a part of the subject.
    Type: Application
    Filed: February 4, 2011
    Publication date: August 4, 2011
    Applicants: Kabushiki Kaisha Toshiba, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventor: Takahiro ISHII
  • Publication number: 20110150177
    Abstract: The present invention provides a CT scanning system having a patient table and a gantry comprising an x-ray source configured to irradiate an x-ray beam while at least partly rotating about an object being arranged on the patient table in order to be scanned. The gantry further comprises an x-ray detector configured to receive x-rays penetrating through the object to be scanned and further configured to provide output signals representative of the received x-rays. The CT scanning system further comprises an x-ray cabinet comprising x-ray shielding material. It is preferred that the x-ray cabinet is fully surrounding the gantry. The x-ray cabinet may at least partly surround the patient table. However, it is preferred that the x-ray cabinet is fully surrounding the patient table. Thus, the patient table may be configured to be fully inserted in the x-ray cabinet, whereby the x-ray cabinet is fully surrounding the patient table.
    Type: Application
    Filed: May 29, 2009
    Publication date: June 23, 2011
    Applicant: GNI APS
    Inventor: Gorm Nielsen Groot
  • Publication number: 20110142196
    Abstract: An X-ray CT apparatus has a plurality of projectors, a reception unit, a setting unit, a supporter, and a scan execution unit. The projectors each have a light source on a circumference having a same radius as a rotation radius of an X-ray focal point of an X-ray irradiator and each irradiate laser light having an irradiation range simulating an irradiation range of the X-ray. The reception unit receives an instruction for three-dimensionally sliding the projectors as one body. The setting unit sets a position of the projectors. The supporter supports a table and three-dimensionally slides the table by a difference between a position of a center of the circumference of the set projectors and a position of a rotation center of the X-ray focal point of the X-ray irradiator. The scan execution unit executes a scan with the table after the sliding as a scan position.
    Type: Application
    Filed: December 13, 2010
    Publication date: June 16, 2011
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventor: Toshiyuki SHINNO
  • Patent number: 7961924
    Abstract: A method and system for determining the three-dimensional location and orientation of a medical device distal end using a single-plane imaging system, using a computational model of the medical device and a transfer function for the medical device describing local device shape and orientation in response to user or computer determined inputs. The method allows guidance of an interventional medical system to a set of target points within the patient using a single-projection imaging system.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: June 14, 2011
    Assignee: Stereotaxis, Inc.
    Inventor: Raju R. Viswanathan
  • Patent number: 7949173
    Abstract: A method and system for regression-based object detection in medical images is disclosed. A regression function for predicting a location of an object in a medical image based on an image patch is trained using image-based boosting ridge regression (IBRR). The trained regression function is used to determine a difference vector based on an image patch of a medical image. The difference vector represents the difference between the location of the image patch and the location of a target object. The location of the target object in the medical image is predicted based on the difference vector determined by the regression function.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: May 24, 2011
    Assignee: Siemens Corporation
    Inventors: Shaohua Kevin Zhou, Jinghao Zhou, Bogdan Georgescu, Dorin Comaniciu
  • Publication number: 20110110486
    Abstract: Apparatus and methods for computed tomography (CT) imaging are provided. One method includes providing a patient table to move along an examination axis of a rotating gantry of a CT imaging system having at least one imaging detector. The imaging detector includes a pixelated detector array. The method further includes configuring the CT imaging system to perform an overlapping helical CT scan by controlling a speed of the moving patient table along the examination axis through a field of view (FOV) of the at least one imaging detector of the rotating gantry.
    Type: Application
    Filed: November 10, 2009
    Publication date: May 12, 2011
    Inventors: Jean-Paul Bouhnik, Yaron Hefetz
  • Publication number: 20110103546
    Abstract: In an X-ray computer tomograph and a method for examining a component by means of X-ray computer tomography, the component carries out a movement relative to a radiation source detector unit in at least two degrees of freedom of movement, so at least one trajectory can be produced which spans a three-dimensional space. Since the X-radiation has a three-dimensional radiation geometry, volume data can be rapidly obtained and precisely reconstructed to form a three-dimensional X-ray image. The component can be geometrically measured by means of a geometry detection unit.
    Type: Application
    Filed: April 21, 2009
    Publication date: May 5, 2011
    Inventors: Randolf Hanke, Theobald Fuchs, Tobias Schön, Michael Maisl, Stefan Kasperl
  • Patent number: 7934869
    Abstract: Embodiment of the invention describes a system and a method for positioning an object from a first pose to a second pose. The method displays concurrently a first image and a second image on a display device, wherein the first image and the second image represent respectively the first pose and the second pose of the object. The method updates, in response to a change in a pose of the display device, the second image such that an alignment of the first image and the second image on the display device depends on the change in the pose of the display device, and positions the object from the first pose to the second pose based on the change in the pose of the display device.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: May 3, 2011
    Assignee: Mitsubishi Electric Research Labs, Inc.
    Inventors: Yuri A. Ivanov, John C. Barnwell, III, Andrea E. G. Bradshaw
  • Publication number: 20110075798
    Abstract: A method for correcting truncated projection data of a rotation for a reconstruction technique for computed tomography scans with truncated projection data in the computed tomography images produced by a C-arm is proposed. At least one truncated projection is recorded. The truncated portions prior to acquisition of the rotation for the at least one truncated projection is captured. The truncated projection and the truncated portions are assembled into at least one complete projection. Truncated projection data is acquired during the rotation. The truncated data is estimated based on a model of the patient geometry from the at least one complete projection. A reconstruction technique is performed on the basis of the acquired and the estimated data.
    Type: Application
    Filed: September 28, 2010
    Publication date: March 31, 2011
    Inventors: Jan Boese, Klaus Klingenbeck
  • Patent number: 7916832
    Abstract: A control device of a breast image radiographing apparatus relating to the present invention controls a driving device, in response to a press-down of a position adjustment switch of an input device, so as to adjust the position of a subject table. The position of compression board is adjusted by the operator such as a radiographing technician, the subject H is pressed and fixed, and when the enlargement factor of the phase contrast radiographing is inputted through the input device, the control device controls a driving device according to the positions of the subject table and the compression board and the inputted enlargement factor, so as to make a holding member ascend and descend and thereby the relative distances of the subject table to a radiation source and to a radiation image detector are adjusted to distances satisfying the enlargement factor=(R1+R2)/R1.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: March 29, 2011
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Hirotaka Hara, Mamoru Umeki, Hisashi Yonekawa, Sumiya Nagatsuka, Tomonori Gido
  • Patent number: 7909036
    Abstract: A head holder made of radiolucent material is attached near an end of a table to support a head of a patient during a CT scan. The head holder includes a base portion that supports the shoulders and upper back of the patient and a head rest that supports a patient's head. The head holder is moveable relative to the table in a direction that is generally parallel to a length of the table. A position of the head rest is adjustable in a vertical direction relative to the base portion. The radiolucent material of the head holder does not affect the quality of a resulting CT scan.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: March 22, 2011
    Assignee: Xoran Technologies, Inc.
    Inventors: Michael Thomas Kusner, Jr., James A. Bertolina, William C. Van Kampen, Joseph Webster Stayman, Jonathan Alspaugh
  • Patent number: 7881426
    Abstract: A method for generating an image of an object using a scanning system includes performing a first portion of a scan in a first scanning mode to acquire a first dataset, receiving a halt command for a conveyor within the scanning system, decelerating the conveyor to a halt based on the halt command using a conveyor controller, and, when the object is present within an examination region after the conveyor has halted, performing a second portion of the scan in a second scanning mode to acquire a second dataset. The second scanning mode is different than the first scanning mode. The method also includes reconstructing the first dataset using a first reconstruction algorithm and reconstructing the second dataset using a second reconstruction algorithm. The second reconstruction algorithm is different than the first reconstruction algorithm. The image is generated using the first reconstructed dataset and the second reconstructed dataset.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: February 1, 2011
    Assignee: Morpho Detection, Inc.
    Inventors: Samit Kumar Basu, Jian Gao, Steven Leslie Hills, Eugene Alex Ingerman, Pierfrancesco Landolfi, Sussan Pourjavid-Granfors
  • Publication number: 20110019796
    Abstract: A method and system for automated testing and/or measurement of a plurality of substantially identical components by means of X-ray radiation comprises a testing/measuring device with an X-ray device, a protection cabin surrounding the testing/measuring device, a conveying device for continuously conveying components to or away from the testing/measuring device, and a control/evaluation unit, which is set up for automated control of the system and for evaluation of the X-ray signals. The testing/measuring device comprises a support and a rotor mounted on the support so as to be continuously rotatable, the X-ray device being arranged on the rotor and the conveying device being set up for serial conveying of the components through the rotor and the control/evaluation unit for computer tomographic evaluation of the X-ray signals.
    Type: Application
    Filed: July 23, 2010
    Publication date: January 27, 2011
    Applicant: GE SENSING & INSPECTION TECHNOLOGIES GMBH
    Inventors: MICHAEL WUESTENBECKER, INGO STUKE