Patents Examined by Irakli Kiknadze
  • Patent number: 11353603
    Abstract: A method of making an apparatus suitable for detecting X-ray is disclosed. In an example, the method includes: obtaining a semiconductor substrate with a first electrical contact on a first surface and a second electrical contact on a second surface opposite the first surface, the second electrical contact comprising a plurality of discrete portions; forming a plurality of trenches extending into at least 70% of a thickness of the semiconductor substrate, wherein the plurality of trenches encircle each of the discrete portions.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: June 7, 2022
    Inventors: Peiyan Cao, Yurun Liu
  • Patent number: 11350895
    Abstract: A system and method for material decomposition of a single energy spectrum x-ray dataset includes accessing the single energy spectrum x-ray dataset, receiving a user-selection of a desired energy for decomposition, and decomposing the single energy spectrum x-ray dataset into material bases as a linear combination of energy dependence function of selected basis materials and the corresponding spatial dependence material bases images.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: June 7, 2022
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Guang-Hong Chen, Yinsheng Li
  • Patent number: 11355808
    Abstract: This application describes an internal, re-chargeable power source for a portable medical device. The power source contains a removable battery pack comprising a lithium-containing material with 5 to 7 battery cells in series, each individual cell having a current capacity ranging from about 3000 mAh to about 3700 mAh. The power source can have a total energy capacity ranging from about 65 Watt-hour to about 170 Watt-hours. Other embodiments are described.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: June 7, 2022
    Assignee: Turner Imaging Systems, Inc.
    Inventors: Douglas P. Hansen, Keith Decker, Jacob Cassinat
  • Patent number: 11344268
    Abstract: An imaging system is disclosed. The imaging system is operable to acquire and/or generate image data at positions relative to a subject. The imaging system includes a drive system configured to move the imaging system.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: May 31, 2022
    Assignee: Medtronic Navigation, Inc.
    Inventors: David A. Garlow, Robert P. Cloutier, John T. Hickey
  • Patent number: 11344275
    Abstract: A medical diagnostic-imaging apparatus according to an embodiment includes a gantry device and a processing circuitry. The gantry device includes an opening in which a subject is inserted. The processing circuitry is configured to set an inserting range indicating a range in which the subject is inserted into the opening by move of the subject or by move of the gantry device based on a scan plan. The processing circuitry is configured to acquire a position of the subject in the inserting range as first position information. The processing circuitry is configured to determine whether the subject interferes with the gantry device based on the first position information.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: May 31, 2022
    Inventor: Katsumi Gotanda
  • Patent number: 11350512
    Abstract: A method for controlling an X-ray source configured to emit, from an X-ray spot on a target, X-ray radiation generated by an interaction between an electron beam and the target, wherein the X-ray spot is determined by the field of view of an X-ray optical system of the X-ray source. The method includes providing the target, providing the electron beam forming an electron spot on the target and interacting with the target to generate X-ray radiation, and adjusting a width and total power of the electron beam such that a maximum of the power density profile in the electron spot is below a predetermined limit, and such that a total power delivered to the target in the X-ray spot is increased.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: May 31, 2022
    Assignee: EXCILLUM AB
    Inventors: Per Takman, Ulf Lundström
  • Patent number: 11337663
    Abstract: Systems and method for performing X-ray computed tomography (CT) that can improve spectral separation and decrease motion artifacts without increasing radiation dose are provided. The systems and method can be used with either a kVp-switching source or a single-kVp source. When used with a kVp-switching source, an absorption grating and a filter grating can be disposed between the X-ray source and the sample to be imaged. Relative motion of the filter and absorption gratings can by synchronized to the kVp switching frequency of the X-ray source. When used with a single-kVp source, a combination of absorption and filter gratings can be used and can be driven in an oscillation movement that is optimized for a single-kVp X-ray source. With a single-kVp source, the absorption grating can also be omitted and the filter grating can remain stationary.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: May 24, 2022
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Ge Wang, Wenxiang Cong, Yan Xi
  • Patent number: 11337671
    Abstract: Various methods and systems are provided for spectral computed tomography (CT) imaging. In one embodiment, a method comprises performing a scan of a subject to acquire, with a detector array comprising a plurality of detector elements, projection data of the subject, generating corrected path-length estimates based on the projection data and one or more selected correction functions, and reconstructing at least one material density image based on the corrected path-length estimates. In this way, the fidelity of spectral information is improved, thereby increasing image quality for spectral computed tomography (CT) imaging systems, especially those configured with photon-counting detectors.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: May 24, 2022
    Assignee: GE Precision Healthcare LLC
    Inventors: Jiahua Fan, Matthew Getzin, Sathish Ramani, Peter Edic
  • Patent number: 11340177
    Abstract: Disclosed are calibration assembly and calibration method of calibrating geometric parameters of a CT apparatus. The calibration assembly includes at least one calibration unit each including a plurality of calibration wires, and the plurality of calibration wires are arranged regularly in a same plane. The calibration assembly is easy to be processed and can be used to calibrate geometric parameters of a CT apparatus, and the calibration operations are simple and easy to be implemented.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: May 24, 2022
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Zhiqiang Chen, Li Zhang, Zhenhua Zhao, Yunda Sun, Xin Jin, Wuyang Liang
  • Patent number: 11331516
    Abstract: A method of making a treatment plan with a treatment planning system and radiotherapy system are provided. The method includes: acquiring a preset dose distribution scheme; generating at least one radiation dose distribution scheme to be used with the treatment planning system, wherein the treatment plan system is adapted to at least one of beam energy of the radiotherapy system, a size of a collimator of the radiotherapy system, a radiation angle and radiation time of the radiotherapy system; and comparing the at least one radiation dose distribution scheme to be used with the preset dose distribution scheme, and determining, among the at least one radiation dose distribution scheme, a radiation dose distribution scheme that is the closest to the preset dose distribution scheme to make the treatment plan.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: May 17, 2022
    Inventor: Haifeng Liu
  • Patent number: 11333619
    Abstract: A measurement X-ray CT apparatus calibrates a geometrical positional relationship between a focus of an X-ray source, an X-ray detector, and a rotation center of a rotating table in advance. The measurement X-ray CT apparatus then obtains projection images by irradiating the object to be measured with X-rays to perform a CT scan, and generates a three-dimensional image of the object to be measured by CT reconstruction of the projection images. The measurement X-ray CT apparatus further includes a reference frame that is made of a material and has a structure less susceptible to environmental changes, and sensors that are located on the reference frame and intended to successively obtain calibration values of the geometrical positional relationship between the focus of the X-ray source and the X-ray detector during the CT scan. The calibration values are used as parameters of the CT reconstruction.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: May 17, 2022
    Inventors: Seiji Sasaki, Nobuyuki Nakazawa, Hisayoshi Sakai, Masato Kon, Hidemitsu Asano
  • Patent number: 11331064
    Abstract: An apparatus and method are described using a forward model to correct pulse pileup in spectrally resolved X-ray projection data from photon-counting detectors (PCDs). To calibrate the forward model, which represents each order of pileup using a respective pileup response matrix (PRM), an optimization search determines the elements of the PRMs that optimize an objective function measuring agreement between the spectra of recorded counts affected by pulse pileup and the estimated counts generated using forward model of pulse pileup. The spectrum of the recorded counts in the projection data is corrected using the calibrated forward model, by determining an argument value that optimizes the objective function, the argument being either a corrected X-ray spectrum or the projection lengths of a material decomposition. Images for material components of the material decomposition are then reconstructed using the corrected projection data.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: May 17, 2022
    Inventors: Jian Zhou, Zhou Yu, Yan Liu
  • Patent number: 11324466
    Abstract: An image processor applies computation processing to a plurality of CT images formed by irradiation of radiation of a plurality of energy levels to acquire monochromatic CT images. The image processor acquires a first energy level CT image formed by irradiation of first energy level radiation and a second energy level CT image formed by irradiation of second energy level radiation, applies a plurality of weighted computations to the first and second energy level CT images to compute a plurality of monochromatic CT images as a result of the weighted computations, segments a surrounding region of a highly-absorbent material circumferentially into a plurality of regions of interest having a predetermined area and calculates a standard deviation of the surrounding region by using a mean value of image data of each region of interest, for each monochromatic CT image, and selects a monochromatic CT image with a small standard deviation.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: May 10, 2022
    Inventors: Sodai Tanaka, Hiroki Shirato
  • Patent number: 11311258
    Abstract: A real-time fluoroscopic imaging system includes a collimator and a detector which are rotationally movable independent of the support assembly, e.g., c-arm, to which they are mounted. Rotational movement of the collimator and the detector are coordinated such that the orientation of the detector with respect to the collimator does not change. The collimator may include a geared flange member to facilitate rotation, and may be a single molded piece formed of a plastic such as tungsten polymer material. The system may also include a plurality of interchangeable collimators characterized by different shapes. A display is provided to present an image to an operator, and image orientation logic displays a target anatomy in a selected orientation regardless of orientation of the target anatomy relative to the detector, and regardless of rotation of the detector.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: April 26, 2022
    Assignee: Hologic, Inc.
    Inventors: John Jenkins, Mark Guetersloh, Aleksey Danilkin, Tri Pham
  • Patent number: 11311263
    Abstract: A non-transitory computer-readable medium stores instructions executable by a processor to perform an acquisition and reconstruction method for a first image acquisition device. The method includes determining a scheduled acquisition time based on an attenuation map derived from imaging data from a second image acquisition device and a sensitivity matrix of the first image acquisition device; acquiring emission imaging data using the first image acquisition device, where the acquiring is scheduled to be performed over the scheduled acquisition time; during an initial portion of the acquiring, measuring a count or count rate of the acquired emission imaging data; adjusting the scheduled acquisition time based on the measured count or count rate to generate an adjusted acquisition time while continuing the acquiring; stopping the acquiring at the adjusted acquisition time; and reconstructing the emission imaging data acquired over the adjusted acquisition time to generate one or more reconstructed images.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: April 26, 2022
    Inventors: Chuanyong Bai, Andriy Andreyev
  • Patent number: 11298088
    Abstract: A cone-beam computed tomography (CBCT) method uses a continuous beam and an area detector to carry out fast acquisition of projection data. The acquired projection data are then reconstructed to generate tomographic images. In acquisition of the projection data, a radiation source continuously irradiates a subject with a cone beam of radiation from a plurality of angles and an area detector continuously reads out data. A CBCT system including a source operable to produce a cone beam of radiation and an area detector movable in synchrony with the source to rapidly acquire projection data for CBCT construction is also disclosed.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: April 12, 2022
    Assignee: Varian Medical Systems International AG
    Inventors: Mathias Lehmann, Reto Ansorge, Manuel Waser, Daniel Morf
  • Patent number: 11298093
    Abstract: An imaging system including a scanner and a transport mechanism mounted to the base of the scanner, wherein the transport mechanism includes a gross movement mechanism for transporting the scanner relatively quickly across room distances and a fine movement mechanism for moving the scanner precisely, relative to the object being scanned, during scanning.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: April 12, 2022
    Assignee: NeuroLogica Corp.
    Inventors: Andrew P. Tybinkowski, Eric M. Bailey, Daniel Allis
  • Patent number: 11291425
    Abstract: In order to sufficiently capture spatial distortion specific to an X-ray CT device and evaluate the three-dimensional shape measurement accuracy of the X-ray CT device, in a utensil, by attaching support rods fixing spheres to the tip thereof and having different lengths to a base spheres are arranged in an XYZ space on the base. On a flat surface on the top of the base, the support rods supporting the spheres and having different lengths are arranged at predetermined intervals. In doing so, the spheres are arranged in the XYZ space respectively at appropriate inter-sphere distances.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: April 5, 2022
    Inventors: Taketo Kishi, Makoto Sato, Toshiyuki Takatsuji, Makoto Abe, Hiroyuki Fujimoto
  • Patent number: 11278367
    Abstract: A portable and collapsible apparatus for holding fiducial markers has a first section that includes a frame, an opposite second side, a first panel attached to the first frame and fiducial markers attached to the first panel. The apparatus includes a second section pivotably attached to the first section and a second frame, an opposite second side, a second panel member attached to the second frame and fiducial markers attached to the second panel. The apparatus is configurable to a closed state by pivoting the first section and second section toward each other where the rear sides of the first frame and second frame contact each other. The apparatus is configurable to an opened state by pivoting the first section and second section away from each other. In the opened state, the first section and second section are vertically oriented with respect to a surface.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: March 22, 2022
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Angel Diaz, David Rivera-Marchand, Lonnie Frericks, Andrew Wojtkowski, Anthony Kummerer
  • Patent number: 11275037
    Abstract: A system and method are provided including an inclusion module to receive a powder sample from a powder source; a computed tomography equipment; a memory for storing program instructions; an inclusion processor, coupled to the memory, and in communication with the inclusion module, and operative to execute program instructions to: receive the powder sample; execute a computed tomography (CT) scan process of the received sample to generate a first dataset including one or more images; identify inclusions in the one or more images, via a segmentation process; reconstruct, via a reconstruction process, the identified inclusion into a 3D representation; measure the identified inclusion; mark the inclusions on one or more image slices from the 3D representations; and determine whether the powder source is contaminated based on the one or more marked images. Numerous other aspects are provided.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: March 15, 2022
    Inventors: Ying Zhou, Evan Dolley, Anjali Singhal, Albert Cerrone, Daniel Ruscitto, Rajiv Sampath, Martin Morra, Krzysztof Lesnicki, Paul Roth