Patents Examined by Glen Kao
  • Patent number: 9782142
    Abstract: In the X-ray CT system according to an embodiment, a control means displaces and images imaging regions in the subject by controlling a top board driver and an imaging means such that the X-rays are projected onto the subject every time a top board is moved by a predetermined transfer amount. An acquiring means acquires projection data of the respective imaging regions. A reconstruction means, based on the projection data, reconstructs tomographic images for each predetermined size of a reconstruction region. In the scan control mode, the control means outputs the transfer amount corresponding to this mode to the top board driver. In the reconstruction control mode, the control means outputs the size of the reconstruction region corresponding to this mode to the reconstruction means.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: October 10, 2017
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Satoru Nakanishi, Naruomi Akino
  • Patent number: 9778211
    Abstract: As one embodiment, the X-ray CT device comprises an X-ray tube, a tube voltage generator, an X-ray detector, a data accumulating unit, and an image processing unit. The tube voltage generator applies tube voltage to the X-ray tube. The tube voltage controlling unit controls the tube voltage generator so as to periodically alternate the tube voltage. The X-ray detector is arranged across a subject from the X-ray tube, and detects the X-rays penetrating the subject. The data accumulating unit accumulates first sampling data when a high voltage is applied to said X-ray tube in one cycle by synchronizing with the change in said tube voltage from the data detected by said X-ray detector, and after a predetermined amount of time has passed from said accumulation, accumulates second sampling data when a low voltage is applied to said X-ray tube. The image processing unit creates images based on the accumulated first sampling data and second sampling data.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: October 3, 2017
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Masaharu Tsuyuki, Toshiyuki Shinno
  • Patent number: 9778376
    Abstract: The present invention provides a radiographic imaging device, radiographic imaging system, a program for controlling the radiographic imaging device, and a method for controlling the radiographic imaging device that may accurately detect start of irradiation of radiation even noises are generated by interference or the like. When radiation is irradiated, electric signals outputted from radiation detection pixels in charge accumulation period are detected by signal detection circuit during detection period. Control section determines whether time variation of the electric signals feature pre-specified characteristics of noise. If not, the start of the irradiation of radiation has been properly detected, the charge accumulation period continues, and radiographic image is imaged.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: October 3, 2017
    Inventor: Yoshihiro Okada
  • Patent number: 9778212
    Abstract: A method for determining an amount of lithium in a lithium-ion battery electrode sample includes a step of determining powder X-ray diffraction peaks of the lithium-ion battery electrode sample. The powder X-ray diffraction peaks of the lithium-ion battery electrode sample are compared with a set of lithium-containing samples having pre-determined lithium concentrations to determine the amount of lithium in the lithium-ion battery electrode sample.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: October 3, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Misle M. Tessema, Michael P. Balogh
  • Patent number: 9778214
    Abstract: The X-ray analyzing apparatus according to the present invention includes, in combination: a first correcting unit (13A, 13B) to output a first gain to cause a pulse height of a target peak which is estimated on the basis of a sum of counting rates obtained in preliminary measurement, to match a predetermined expected pulse height; and a second correcting unit (14A, 14B) to output, in real time through feedback control, a second gain to be added to the first gain in order to cause the pulse height of the target peak detected within a predetermined energy range, to match the expected pulse height, and further includes a feedback control stopping unit (16A, 16B) to appropriately determine presence/absence of an interfering line with respect to the target peak, and to set, when determining that the interfering line exists, the gain to a fixed value including only the first gain.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: October 3, 2017
    Assignee: Rigaku Corporation
    Inventor: Yukio Sako
  • Patent number: 9757075
    Abstract: An X-ray CT system is provided to achieve simplification and time-saving in the work of setting the subject in scanning position. An X-ray CT system as an embodiment comprises a patient table, a gantry apparatus, a formation unit, a drive unit, a storage unit, and a drive controller. The patient table has a top plate, on which the subject is placed. The gantry apparatus executes scanning on the subject by rotating a detector unit, which includes an X-ray tube and an X-ray detector set facing each other. The formation unit forms image data of the subject based on the data acquired by the scanning. The drive unit changes the relative position between the top plate and the detector unit. The storage unit stores relative position information that indicates the relative position applied for the scanning.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: September 12, 2017
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Go Mukumoto
  • Patent number: 9750479
    Abstract: An apparatus for calibrating an x-ray computed tomography device has a plurality of objects formed from a material that is visible to x-rays. The plurality of objects are configured to receive x-rays without changing shape, and have substantially the same shape. The objects each have an object attenuation value to x-rays and a center point such that they are symmetrically shaped relative to their respective center points. The apparatus also has a base at least in part fixedly supporting the plurality of objects so that each of the plurality of objects contacts at least one of the other objects. Like other physical objects, such as the objects, the base has a base attenuation value to x-rays, and that value is greater than the base attenuation value. The center points of the plurality of objects together form a three-dimensional volume.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: September 5, 2017
    Assignee: Hexagon Metrology, Inc.
    Inventor: Gurpreet Singh
  • Patent number: 9750465
    Abstract: The invention relates to the field of X-ray differential phase contrast imaging. For scanning large objects and for an improved contrast to noise ratio, an X-ray device (10) for imaging an object (18) is provided. The X-ray device (10) comprises an X-ray emitter arrangement (12) and an X-ray detector arrangement (14), wherein the X-ray emitter arrangement (14) is adapted to emit an X-ray beam (16) through the object (18) onto the X-ray detector arrangement (14). The X-ray beam (16) is at least partial spatial coherent and fan-shaped. The X-ray detector arrangement (14) comprises a phase grating (50) and an absorber grating (52). The X-ray detector arrangement (14) comprises an area detector (54) for detecting X-rays, wherein the X-ray device is adapted to generate image data from the detected X-rays and to extract phase information from the X-ray image data, the phase information relating to a phase shift of X-rays caused by the object (18).
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: September 5, 2017
    Inventors: Klaus Juergen Engel, Dieter Geller, Gereon Vogtmeier, Thomas Koehler
  • Patent number: 9748012
    Abstract: According to a method for manufacturing a metal grating structure of the present invention, in filling a concave portion formed in a silicon substrate (30), for instance, a slit groove (SD) with metal by an electroforming method, an insulating layer (34) is formed in advance on an inner surface of the slit groove (SD) as an example of the concave portion by a thermal oxidation method. Accordingly, the metal grating structure manufacturing method is advantageous in finely forming metal parts of the grating structure. A metal grating structure of the present invention is manufactured by the above manufacturing method, and an X-ray imaging device of the present invention is incorporated with the metal grating structure.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: August 29, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Mitsuru Yokoyama
  • Patent number: 9724064
    Abstract: Provided is a radiographic apparatus configured to obtain an animated image of a fluoroscopic image, and thereafter complete fluoroscopy temporarily for taking a static image or the animated image for diagnosis, the radiographic apparatus allowing taking an image of a subject with suitable brightness. The apparatus determines a control condition (radiography condition) of an X-ray tube for taking the static image in accordance with the control condition of the X-ray tube upon obtaining the fluoroscopic image. With the disclosure, brightness of the subject contained in the fluoroscopic image is also regarded upon determination of the radiography condition. This achieves obtaining the suitable radiography condition even when obtaining the animated image stops before radiation has appropriate intensity during obtaining a live image. Accordingly, the apparatus in the disclosure allows obtaining a clear image with appropriate exposure.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: August 8, 2017
    Assignee: Shimadzu Corporation
    Inventor: Katsuhiro Yabugami
  • Patent number: 9724047
    Abstract: In a mammography method and apparatus to generate a tomosynthetic x-ray image of a breast of a patient, two tomosynthesis scans are successively implemented with different x-ray energies. In one of the scans, a synthetic projection image is generated from at least two projection images acquired in this scan, this synthetic projection image corresponding to a projection at a projection angle at which a projection image has been acquired in the other scan. A difference image, used to reconstruct the tomosynthesis x-ray image, is generated from this synthetic projection image and the projection image acquired in the other scan. Alternatively, in each scan a synthetic projection image is generated from at least two projection images acquired in that scan. Each synthetic projection image represents a projection at the same projection angle. A difference image, used to reconstruct the tomosynthesis x-ray image, is generated from these two synthetic projection images.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: August 8, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventor: Mathias Hörnig
  • Patent number: 9727961
    Abstract: A method of operating a radiographic inspection system is designed for a radiographic inspection system in which a conveyor chain with identical modular chain segments transports the articles being inspected. The method encompasses a calibration mode and an inspection mode of the radiographic inspection system. In the calibration mode, calibration data characterizing the radiographic inspection system with the empty conveyor chain are generated and stored as a template image. In the inspection mode, raw images (50) of the articles (3) under inspection with the background (41) of the conveyor chain are acquired and arithmetically merged with the template image. The method results in a clear output image (51) of the articles under inspection being obtained without the interfering background of the conveyor chain.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: August 8, 2017
    Inventors: Xinchi Wang, Nigel John King
  • Patent number: 9717467
    Abstract: An apparatus for cone beam computed tomography can include a support structure, a scanner assembly coupled to the support structure for controlled movement in at least x, y and z orientations, the scanner assembly can include a DR detector configured to move along at least a portion of a detector path that extends at least partially around a scan volume with a distance D1 that is sufficiently long to allow the scan volume to be positioned within the detector path; a radiation source configured to move along at least a portion of a source path outside the detector path, the source path having a distance D2 greater than the distance D1, the distance D2 being sufficiently long to allow adequate radiation exposure of the scan volume for an image capture by the detector; and a first gap in the detector path.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: August 1, 2017
    Assignee: Carestream Health, Inc.
    Inventors: Michael A. Litzenberger, Joseph E. Stagnitto, Anthony Dirisio, Peter A. Newman, William C. Wendlandt
  • Patent number: 9717469
    Abstract: According to one embodiment, Switching units are configured to switch the intensity of X-rays to be generated by an anode. An X-ray controller controls the switching units to switch the intensity of the X-rays to be generated by the anode, and controls a rotor control power generator to rotate the anode. When a value approximately equal to an integer multiple of an X-ray intensity switching period designated by a user coincides with the rotor rotation period, the X-ray controller controls the rotor control power generator to shift the thermoelectron collision ranges of the anode in the first turn from thermoelectron collision ranges in the second turn.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: August 1, 2017
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Sanae Harada
  • Patent number: 9719947
    Abstract: An x-ray interferometric imaging system in which the x-ray source comprises a target having a plurality of structured coherent sub-sources of x-rays embedded in a thermally conducting substrate. The system additionally comprises a beam-splitting grating G1 that establishes a Talbot interference pattern, which may be a ? phase-shifting grating, and an x-ray detector to convert two-dimensional x-ray intensities into electronic signals. The system may also comprise a second analyzer grating G2 that may be placed in front of the detector to form additional interference fringes, a means to translate the second grating G2 relative to the detector. The system may additionally comprise an antiscattering grid to reduce signals from scattered x-rays. Various configurations of dark-field and bright-field detectors are also disclosed.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: August 1, 2017
    Assignee: Sigray, Inc.
    Inventors: Wenbing Yun, Sylvia Jia Yun Lewis, Janos Kirz
  • Patent number: 9721693
    Abstract: A collimator for x-ray, gamma, or particle radiation has a plurality of collimator elements made of a tungsten-containing material to reduce scattered radiation. At least one collimator element consists of a tungsten alloy having a tungsten content of 72 to 98 wt.-%, which contains 1 to 14 wt.-% of at least one metal of the group Mo, Ta, Nb and 1 to 14 wt.-% of at least one metal of the group Fe, Ni, Co, Cu. The collimator also has very homogeneous absorption behavior at very thin wall thicknesses of the collimator elements.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: August 1, 2017
    Assignee: Plansee SE
    Inventors: Dirk Handtrack, Heinrich Kestler, Gerhard Leichtfried
  • Patent number: 9702832
    Abstract: Disclosed is a CT imaging method and system. The method includes: CT scanning an object with a dual-energy CT system to obtain a first complete set of projection data in a first scan mode, and to obtain a second incomplete set of projection data in a second scan mode; reconstructing a first attenuation coefficient image of the object from the first set of projection data, and extracting, from the first attenuation coefficient image, prior structure information of the object indicating edge intensity; and reconstructing a second attenuation coefficient image of the object from the second incomplete set of projection data using the extracted prior structure information as a constraint. With the method using the prior structure information of the imaged object as a constraint in reconstruction, it is possible to dramatically reduce an amount of data required for reconstruction, and achieve satisfactory effects even with ill-conditioned problems of limited-angle and inner reconstruction.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: July 11, 2017
    Inventors: Le Shen, Yuxiang Xing, Li Zhang, Zhiqiang Chen
  • Patent number: 9697980
    Abstract: A radiation generating apparatus includes a radiation generation tube including an electron emitting source having an electron emitting member, a transmission type target, a tubular backward shielding member having an electron passing hole facing the target layer at one end, located at the electron emitting source side of the transmission type target, and connected to the periphery of the base member. The radiation generating apparatus further includes a collimator having an opening for defining an angle for extracting the radiation at the opposite side of the electron emitting source side of the transmission type target, and an adjusting device connected to the collimator, and configured to vary an opening diameter of the opening, wherein the target layer has a portion separated from a connection portion of the base member and the backward shielding member at the periphery.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: July 4, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takao Ogura, Ichiro Nomura, Kazuyuki Ueda, Takashi Shiozawa
  • Patent number: 9689996
    Abstract: Improved imaging systems are disclosed. More particularly, the present disclosure provides for an improved image sensor assembly for an imaging system, the image sensor assembly having an integrated photodetector array and its associated data acquisition electronics fabricated on the same substrate. By integrating the electronics on the same substrate as the photodetector array, this thereby reduces fabrications costs, and reduces interconnect complexity. Since both the photodiode contacts and the associated electronics are on the same substrate/plane, this thereby substantially eliminates certain expensive/time-consuming processing techniques. Moreover, the co-location of the electronics next to or proximal to the photodetector array provides for a much finer resolution detector assembly since the interconnect bottleneck between the electronics and the photodetector array is substantially eliminated/reduced.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: June 27, 2017
    Assignee: General Electric Company
    Inventors: Naresh Kesavan Rao, James Wilson Rose, Christopher David Unger, Abdelaziz Ikhlef, Jonathan David Short
  • Patent number: 9693439
    Abstract: Methods and systems for realizing a high brightness liquid metal droplet based x-ray source suitable for high throughput x-ray metrology are presented herein. A high power laser bombards a solid target material to generate liquid metal droplets. The laser generated liquid metal droplets are excited with a focused, high power excitation beam such as an electron or laser beam. The excitation beam is synchronized with the stream of liquid metal droplets stimulated by the high power laser to achieve a stable x-ray emission generated by the excited liquid metal droplets. In some embodiments, x-ray optics are designed to efficiently collect and focus radiation within a desired emission band onto a measurement target. Reliability is improved by shielding the excitation source and the x-ray optics from the region of interaction between the excitation beam and the liquid metal droplet anode by a localized curtain of shielding gas.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: June 27, 2017
    Assignee: KLA-Tencor Corporation
    Inventors: Guorong V. Zhuang, Michael S. Bakeman, Andrei V. Shchegrov, Jonathan M. Madsen