With Positron Source Patents (Class 250/363.03)
  • Patent number: 11402521
    Abstract: An imaging system based on an imaging device and/or a cooling system is provided. The imaging system may include a control module, an imaging device, and/or a cooling system. The imaging device may include a first portion and a second portion. The cooling system may include a cooling module configured to generate a cooling medium, and/or a cooling medium passage configured to spread the cooling medium. The cooling medium passage may belong to a closed loop. At least part of the cooling system may be located within the imaging device such that the cooling medium may be in direct contact with the at least part of the imaging device.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: August 2, 2022
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Weiping Liu, Yixing Sun
  • Patent number: 11385362
    Abstract: The invention provides a novel arrangement of photon sensors on a scintillation-crystal based gamma-ray detector that takes advantage of total internal reflection of scintillation light within the scintillation detector substrate. The present invention provides improved spatial resolution including depth-of-interaction (DOI) resolution while preserving energy resolution and detection efficiency, which is especially useful in small-animal or human positron emission tomography (PET) or other techniques that depend on high-energy gamma-ray detection. Moreover, the new geometry helps reduce the total number of readout channels required and eliminates the need to do complicated and repetitive cutting and polishing operations to form pixelated crystal arrays as is the standard in current PET detector modules.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: July 12, 2022
    Assignee: Arizona Board of Regents on behalf of the University of Arizona
    Inventors: Lars Furenlid, Xin Li
  • Patent number: 11382586
    Abstract: Systems and methods are provided for evaluating tissue for abnormal glucose uptake within a region of interest within a patient. A PET scanner obtains PET imagery including the region of interest and at least part of the liver. An SUV calculator calculates a first set of SUVs representing the region of interest and a second set SUVs representing the liver from the set of at least one PET image. A standardization component calculates a correction value as a function of the second set of SUVs and applies the correction value to either a decision threshold associated with the region of interest or the first set of SUVs. A diagnosis component compares the first set of SUVs to the decision threshold to determine if the glucose uptake within the region of interest is abnormal. A display provides the determination to a user.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: July 12, 2022
    Inventor: Richard R. Black
  • Patent number: 11324472
    Abstract: A method of estimating energy-based scatter content in PET list-mode data is provided.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: May 10, 2022
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventor: James Hamill
  • Patent number: 11322333
    Abstract: A scintillator assembly including an entrance surface for receiving charged particles into the scintillator assembly, the charged particles including first charged particles at a first energy level and second charged particles at a second energy level. A first scintillator structure configured for receiving the first charged particles and generating a corresponding first signal formed of first photons with a first wavelength of ?1, a second scintillator structure configured for receiving the second charged particles and generating a corresponding second signal of second photons with a second wavelength of ?2, and an emitting surface for egress of a combined signal from the scintillator assembly, the combined signal including the first and second photons, and at least one beam splitter for receiving the combined signal and separating the combined signal to first and second photons.
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: May 3, 2022
    Assignee: EL-MUL TECHNOLOGIES LTD
    Inventors: Dmitry Shur, Eli Cheifetz, Armin Schon
  • Patent number: 11311255
    Abstract: Medical detectors and medical imaging devices are provided. In one aspect, a medical detector includes: a photoelectric conversion device, a first crystal array layer disposed over the photoelectric conversion device, and a second crystal array layer disposed over the first crystal layer. The first crystal array layer includes a plurality of first scintillation crystals arranged in a first crystal array, and a first coupling medium being filled between every adjacent two of the first scintillation crystals. The second crystal array layer includes a plurality of second scintillation crystals arranged in a second crystal array, and a second coupling medium being filled between every adjacent two of the second scintillation crystals. A light transmittance of the second coupling medium is different from a light transmittance of the first coupling medium.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: April 26, 2022
    Assignee: Shanghai Neusoft Medical Technology Co., Ltd.
    Inventors: Xi Wang, Xinying Li, Jian Zhao, Baowei Xu, Guodong Liang
  • Patent number: 11307136
    Abstract: The disclosed scanner for detecting a decay time of light emitted by a luminescent material has a control unit operable to adapt the drive current, or the value of the drive voltage, powering its light source to accordingly adapt the intensity of excitation light delivered to the luminescent material so that its high sensitivity light sensor can reliably measure the luminescence light emitted in response to the excitation light, and thus accurately determine a corresponding decay time value.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: April 19, 2022
    Assignee: SICPA HOLDING SA
    Inventors: Frédéric Pierson, Joël Bonny, Samuel Brügger, Daniel Zahnd
  • Patent number: 11307316
    Abstract: The present disclosure relates to a PET detector and a PET frame. The PET detector may include a plurality of detector modules and a plurality of installing modules configured to install the plurality of detector modules. The plurality of installing modules may be coupled together to form a detector ring. The PET frame may include a detector stabilizing cylinder configured to stabilize a detector and a fixing support configured to support the detector stabilizing cylinder. The detector stabilizing cylinder may be rotatably fixed on the fixing support.
    Type: Grant
    Filed: January 11, 2020
    Date of Patent: April 19, 2022
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Huawei Jiang, Huaifang Jiang
  • Patent number: 11302163
    Abstract: A system, device and method facilitate accurate detection of gunshot events through spectrum analysis of impulse signals and/or evaluating impulse signal exponential decay amplitude and time values. In various embodiments, the device and system employ an acoustic sensor, one or more high-pass and low-pass filters, a threshold detector, a differentiator, a decay waveform shape generator, one or more comparators and one or more timers to facilitate detection of gunshot events and/or components of gunshot events.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: April 12, 2022
    Assignee: Halo Smart Solutions, Inc.
    Inventors: David Antar, Paul Galburt, Frank L. Jacovino, David Rayna
  • Patent number: 11300695
    Abstract: A Time-Resolved PET imaging system for producing an event-by-event, real-time, high resolution, three-dimensional positron emission tomographic images without performing sinogram formation or image reconstruction. The third dimension is provided by measuring the ?T between the arrival times of gamma rays from a positron event being detected by two cooperating detectors. In order to determine the location of a positron event along the lines of response, the measurement includes a fast scintillator, constant fraction discriminator and the digital intervalometer. The arrival time of each photon in the annihilation process is recorded with respect to a clock frequency with picosecond resolution. This approach requires significantly fewer positron events, thus requiring fewer detectors, thereby resulting in an gamma event-by-gamma event, real-time TPET imaging system that is more efficient and more economical to produce than conventional PET systems.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: April 12, 2022
    Inventors: Ronald Nutt, Lynda J. Nutt
  • Patent number: 11288847
    Abstract: Methods for simulating, and correcting for, doubly scattered annihilation gamma-ray photons in both time-of-flight (TOF) and non-TOF positron emission tomography scan data are disclosed.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: March 29, 2022
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Charles C. Watson, Jicun Hu, Chuanyu Zhou
  • Patent number: 11280921
    Abstract: A time correction device for a PET system comprises a detector ring, a ring-shaped prosthesis, and detection, data acquisition, data coincidence, time shift calculation, data correction application modules. Center of the ring-shaped prosthesis overlaps with axial and radial center of the detector ring. The detection module is located in ring-shaped prosthesis. Center of the detection module is at the center of the ring-shaped prosthesis. The data acquisition module comprises data gathering and energy filtering modules connected to each other. The data gathering module comprises detectors and the detection module. The energy filtering module connects to the data gathering module receiving single-event time information. The data coincidence module is connects to the energy filtering module receiving the single-event time information. Time shift calculation module connects to the data coincidence module providing a shift value of the detectors.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: March 22, 2022
    Assignee: RAYCAN TECHNOLOGY CO., LTD (SU ZHOU)
    Inventors: Ming Niu, Tong Liu, Qingguo Xie
  • Patent number: 11277905
    Abstract: A radiation imaging apparatus comprises a sensor unit including two sensor boards stacked together, a base supporting the sensor unit, an electrical component on an opposite side to the sensor unit relative to the base, and a heat insulation member including a portion located between the electrical component and the sensor unit. A heat conductivity of the heat insulation member is lower than a heat conductivity of the base.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: March 15, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazumi Nagano, Keiichi Nomura, Shinichi Takeda, Tomoyuki Oike
  • Patent number: 11249201
    Abstract: A scintillator material includes a matrix phase and scintillator parts dispersed in the matrix phase. The scintillator parts contain fine particles of single crystal. According to the above aspect, since the scintillator parts containing the fine particles of single crystal are dispersed in the matrix phase, it is possible to reduce an influence from an environment.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: February 15, 2022
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventor: Hisayoshi Daicho
  • Patent number: 11234677
    Abstract: The invention concerns a detecting apparatus (12) comprising:—at least two sensors (24, 26, 28), with at least one sensor (24) being an ultrasound transducer adapted to produce ultrasound waves, and—a positioning device (16) defining several compartments (22), each compartment (22) being adapted to hold a sensor (24, 26, 28) and each compartment (22) being located at predetermined location, the positioning device (16) comprising a holder adapted to be fixed on the skull of a subject, the positioning device (16) being adapted to be maintained on the head of the subject using the holder.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: February 1, 2022
    Assignees: INSERM (Institut National de la Santé et de la Recherche Médicale), Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie (Paris 6), Université Paris Diderot—Pris 7, Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris
    Inventors: Jean-Luc Gennisson, Mickaël Tanter, Thomas Deffieux, Mathieu Pernot
  • Patent number: 11213264
    Abstract: A positron emission tomography (PET) assembly includes an annular housing and an annular scintillator disposed within the annular housing. The annular scintillator includes an annular, substantially continuous crystal scintillator tube configured to absorb ionizing radiation and to emit light energy. A plurality of photo detectors are annularly disposed around the annular scintillator within the annular housing and configured to detect the emitted light energy.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: January 4, 2022
    Assignee: University of Virginia Patent Foundation
    Inventors: Stuart S. Berr, Stanislaw Majewski, JosE Maria Benlloch Baviera, Antonio Javier Gonzalez Martinez
  • Patent number: 11185297
    Abstract: A detector module system for positron emission tomography including a plurality of gamma ray detector modules. Each pair of one detector module and one interconnection element includes mutually engaging locking means for releasably connecting the detector module to the interconnection element. Further each interconnection element includes locking means for releasably connecting at least two detector modules to said interconnection element. Further each of said gamma ray detector modules includes a sensor adapted to detect gamma radiation occurring from short-lived radionuclides radiating from a body and to generate a radiation output corresponding to the detected gamma radiation, and the detector module system comprises a processing circuitry adapted to receive said radiation output from each of the gamma ray detector modules and to generate a resulting radiation representation for the positron emission tomography event, based on the received radiation output.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: November 30, 2021
    Assignee: TERAPET LTD.
    Inventors: Christina Vallgren, Marcus Palm
  • Patent number: 11166684
    Abstract: A variable PET apparatus allows structural changes of detector modules in transversal and longitudinal directions to correspond to various imaging purposes and a cross-sectional diameter of a subject while maintaining an arrangement of the detector modules to be close to a true circle. The variable PET apparatus includes: a gantry having an opening on a longitudinal axis; and detector modules supported on the gantry and arranged a predetermined distance apart from each other such that a detection ring is configured with a diameter in a circumferential direction, wherein the gantry is driven by a gantry drive member, and the detector modules are driven by a detector module drive member. According to the present invention, structural changes of the detector modules in the PET apparatus is possible to correspond to a cross-sectional diameter of a subject without additional devices, thereby improving the spatial resolution and sensitivity.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: November 9, 2021
    Assignees: Gachon University of Industry-Academic Cooperation Foundation, GIL Medical Center
    Inventors: Seong-Ho Seo, Sang-Yoon Lee, Jun-Young Chung, Ji-Hye Lee
  • Patent number: 11154262
    Abstract: Detector heads in a gantry of a medical imaging apparatus are pivotally-coupled to mounting rails oriented axially about the gantry's axial centerline. Radial alignment blocks facilitate alignment and fixation of detector faces circumferentially transverse and normal to a radius projecting from the gantry's axial centerline. A column of detector heads on a common rail are separated by axial stop blocks, for precise axial separation. Abutting detector heads on a common mounting rail are slaved to another previously transverse-aligned detector through a common, shared radial alignment block. Plural, stacked gantry backplanes are fabricated simultaneously, assuring common circumferential and radial co-registration of plural mounting rails relative to the axial centerline of the gantry. Adjustable orientation of the detector heads compensates for tolerance stack up during final assembly of the gantry, so that the detector heads are mutually aligned in a uniform grid of axial columns and circumferential rows.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: October 26, 2021
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: James L. Corbeil, Nicholas Gullette, Jeffrey Bostrom
  • Patent number: 11150364
    Abstract: A crystal array, a detector, a medical detection device and a method for manufacturing a crystal array are provided. The crystal array includes a plurality of crystals arranged in an array, each of the crystals having a light incident surface, a light exit surface, and a connection surface connecting the light incident surface to the light exit surface, where the connection surface of at least one of two adjacent crystals includes a rough surface and a smooth surface connected to the rough surface, and the rough surface and the smooth surface are arranged along a length direction of the crystal.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: October 19, 2021
    Assignee: Shanghai Neusoft Medical Technology Co., Ltd.
    Inventors: Xinying Li, Xi Wang, Jian Zhao, Baowei Xu, Guodong Liang
  • Patent number: 11145778
    Abstract: An optical system may include a substrate and a plurality of silicon photomultipliers (SiPMs) monolithically integrated with the substrate. Each SiPM may include a plurality of single photon avalanche diodes (SPADs). The optical system also includes an aperture array having a plurality of apertures. The plurality of SiPMs and the aperture array are aligned so as to define a plurality of receiver channels. Each receiver channel includes a respective SiPM of the plurality of SiPMs optically coupled to a respective aperture of the plurality of apertures.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: October 12, 2021
    Assignee: Waymo LLC
    Inventors: Caner Onal, Pierre-Yves Droz, Nirav Dharia
  • Patent number: 11096633
    Abstract: A positron emission tomography scanner includes a plurality of gamma-ray detector rings that form a bore through which an imaging subject is translated, each of the plurality of gamma-ray detector rings being in a first axial position, and processing circuitry configured to receive attenuation data associated with a plurality of transaxial slices of the imaging subject, determine a second axial position of each of the plurality of gamma-ray detector rings based on the received attenuation data, and adjust a position of each of the plurality of gamma-ray detector rings from the first axial position to the second axial position. The processing circuitry may further be configured to calculate an attenuation metric based on the received attenuation data, and determine the second axial position such that the attenuation metric calculated for each pair of adjacent gamma-ray detector rings is equal.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: August 24, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Wenyuan Qi, Yi Qiang, Evren Asma, Jeffrey Kolthammer
  • Patent number: 11096634
    Abstract: Systems and methods include acquisition of data representing true coincidences and scatter coincidences detected by the plurality of detectors, allocation of the data into respective ones of a plurality of energy ranges, determination of a baseline response associated with each of a subset of the plurality of energy ranges, generation of data representing expected true coincidences associated with each of the subset of the plurality of energy ranges based on the data allocated to each of the subset of the plurality of energy ranges and the baseline response associated with each of the subset of the plurality of energy ranges, determination of a raw scatter estimate based on the data representing expected true coincidences associated with each of the subset of the plurality of energy ranges and the data allocated to each of the subset of the plurality of energy ranges, and reconstruction of an image based on the raw scatter estimate and the data representing true coincidences and scatter coincidences.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: August 24, 2021
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventor: Harshali Bal
  • Patent number: 11061151
    Abstract: A positron emission tomography (PET) detector array includes an enclosing radiation detector array (10) comprising radiation detector elements (14, 16) effective for detecting 511 keV radiation emanating from inside the radiation detector array. The radiation detector pixels of the cylindrical radiation detector array include both higher speed radiation detector elements (14) and lower speed radiation detector elements (16). The lower speed radiation detector pixels have a temporal resolution that is coarser than a temporal resolution of the higher speed radiation detector pixels.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: July 13, 2021
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Chuanyong Bai, Andriy Andreyev, Bin Zhang, Zhiqiang Hu
  • Patent number: 11058371
    Abstract: A method of PET image reconstruction is provided that includes obtaining intra-patient tissue activity distribution and photon attenuation map data using a PET/MRI scanner, and implementing a Maximum Likelihood Expectation Maximization (MLEM) method in conjunction with a specific set of latent random variables, using an appropriately programmed computer and graphics processing unit, wherein the set of latent random variables comprises the numbers of photon pairs emitted from an electron-positron annihilation inside a voxel that arrive into two given voxels along a Line of Response (LOR), where the set of latent random variables results in a separable joint emission activity and a photon attenuation distribution likelihood function.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: July 13, 2021
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Alexander Mihlin, Craig S. Levin
  • Patent number: 11058391
    Abstract: A method for determining a correction profile of an imaging device may include obtaining first data relating to the imaging device; comparing the first data and a first condition; obtaining, based on the comparison, a first correction profile relating to the imaging device; and calibrating, based on the first correction profile, the imaging device.
    Type: Grant
    Filed: December 30, 2018
    Date of Patent: July 13, 2021
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Yixing Sun, Shitao Liu
  • Patent number: 11051773
    Abstract: A system is provided that includes at least one detector and a processing unit. The at least one detector is configured to acquire imaging information. The processing unit is operably coupled to the at least one detector, and is configured to acquire the imaging information from the at least one detector. The processing unit is configured to acquire patient scanning information for an imaging operation, determine a target activity based on the patient scanning information, determine a target time for performing the imaging operation corresponding to the target activity, perform the imaging operation at the target time to acquire targeted imaging information; and reconstruct an image using the targeted imaging information.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: July 6, 2021
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Nitin Jain, Charles Stearns, Savitha V S
  • Patent number: 11041819
    Abstract: A visual test system for a secondary generation or decomposition of a hydrate includes a hydrate conveying device, a computerized tomography (CT) imaging device, a temperature control device, a pressure control device and a flow control device. The hydrate conveying device includes an annular pipeline structure composed of a plurality of straight pipeline sections and a plurality of curved pipeline sections. The straight pipeline section is able to rotate around an axis thereof under the drive of a pipeline driving device. The CT imaging device is used to perform a three-dimensional (3D) detection inside the pipeline, and includes a turntable, a ray source and a detector. The ray source is able to rotate under the drive of the turntable driving device. The temperature control device, the pressure control device and the flow control device are used to control a gas-liquid mixture's temperature, pressure and flow rate, respectively.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: June 22, 2021
    Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Xiao Li, Bo Zheng, Shouding Li, Jianming He, Zhaobin Zhang, Tianqiao Mao, Guanfang Li, Yanfang Wu
  • Patent number: 11031210
    Abstract: A scintillator assembly including an entrance surface for receiving charged particles into the scintillator assembly, the charged particles including first charged particles at a first energy level and second charged particles at a second energy level. A first scintillator structure configured for receiving the first charged particles and generating a corresponding first signal formed of first photons with a first wavelength of ?1, a second scintillator structure configured for receiving the second charged particles and generating a corresponding second signal of second photons with a second wavelength of ?2, and an emitting surface for egress of a combined signal from the scintillator assembly, the combined signal including the first and second photons, and at least one beam splitter for receiving the combined signal and separating the combined signal to first and second photons.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: June 8, 2021
    Assignee: EL-MUL TECHNOLOGIES LTD.
    Inventors: Dmitry Shur, Eli Cheifetz, Armin Schon
  • Patent number: 11017540
    Abstract: In some aspects, the techniques described herein relate to systems, methods, and computer readable media for data pre-processing for stereo-temporal image sequences to improve three-dimensional data reconstruction. In some aspects, the techniques described herein relate to systems, methods, and computer readable media for improved correspondence refinement for image areas affected by oversaturation. In some aspects, the techniques described herein relate to systems, methods, and computer readable media configured to fill missing correspondences to improve three-dimensional (3-D) reconstruction. The techniques include identifying image points without correspondences, using existing correspondences and/or other information to generate approximated correspondences, and cross-checking the approximated correspondences to determine whether the approximated correspondences should be used for the image processing.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: May 25, 2021
    Assignee: Cognex Corporation
    Inventor: Marcus Große
  • Patent number: 10993684
    Abstract: Disclosed is a PET detector assembly in a combined PET/CT scanner system having a backplane structure for supporting two or more PET detector rings that provides substantially balanced load on the gantry backplane while accommodating the varying number of PET detector rings between short axial PET FOV system as well as long axial PET FOV system.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: May 4, 2021
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Ziad Burbar, James L. Corbeil, Jeffrey Bostrom
  • Patent number: 10987081
    Abstract: There are provided a radiation imaging system and a transmission device capable of reducing a user's standby time compared to a case where a tomographic image is transmitted. A console acquires a plurality of projection images obtained by tomosynthesis imaging, generates a plurality of tomographic images by reconstruction using the plurality of projection images, synthesizes a 2-dimensional image based on the plurality of tomographic images, transmits the synthesized 2-dimensional image to an image interpretation support device, and transmits the plurality of projection images to the image interpretation support apparatus.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: April 27, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Riko Koshino, Yusuke Maruo
  • Patent number: 10959684
    Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube and an X-ray detector. The X-ray tube generates X-rays. The X-ray detector includes a first detection area detecting the X-rays and a second detection area detecting the X-rays. The first detection area includes a first scintillator having a first fluorescence decay time, the second detection area includes a second scintillator having a second fluorescence decay time shorter than the first fluorescence decay time. The second detection area is arranged at both ends of the first detection area with respect to a channel direction.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 30, 2021
    Assignee: Canon Medical Systems Corporation
    Inventors: Hiroaki Nakai, Emi Tamura, Hiroaki Miyazaki, Mikihito Hayashi, Tooru Kato, Naoki Sugihara
  • Patent number: 10947452
    Abstract: A scintillation crystal can include Ln(1-y)REyX3, wherein Ln represents a rare earth element, RE represents a different rare earth element, y has a value in a range of 0 to 1, and X represents a halogen. In an embodiment, RE is Ce, and the scintillation crystal is doped with Sr, Ba, or a mixture thereof at a concentration of at least approximately 0.0002 wt. %. In another embodiment, the scintillation crystal can have unexpectedly improved linearity and unexpectedly improved energy resolution properties. In a further embodiment, a radiation detection system can include the scintillation crystal, a photosensor, and an electronics device. Such a radiation detection system can be useful in a variety of radiation imaging applications.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: March 16, 2021
    Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.
    Inventors: Peter R. Menge, Vladimir Ouspenski
  • Patent number: 10937972
    Abstract: The complex comprising one or more of the compound represented by general formula: RPbn1Xm1 (wherein R is a cation represented by R1NH3+ (wherein R1 represents a univalent substituted or unsubstituted hydrocarbon group), or the following formula: (wherein R2 represents a hydrogen atom, or a univalent substituted or unsubstituted hydrocarbon group); X is the same or different, and each represents a halogen atom; n1 is 0.8 to 1.2; and m1 is 2.8 to 3.2, or the compound represented by general formula: R2Pbn2Xm2 wherein R and X are as defined above; n2 is 2.8 to 3.2; and m2 is 7.7 to 8.3; and one or more dimethylformamide molecules is capable of decreasing the stirring time upon dissolution in an organic solvent such as DMSO, as well as decreasing the hysteresis and improving the solar cell characteristics (in particular, photoelectric conversion efficiency) when the complex is applied to a perovskite layer.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: March 2, 2021
    Assignee: Kyoto University
    Inventors: Atsushi Wakamiya, Yumi Hirose, Ai Shimazaki
  • Patent number: 10926111
    Abstract: Provided is a real-time detector of a Bragg peak, comprising: an emitter configured to emit a particle beam toward a target region in a first direction, thereby creating emission of electromagnetic radiation in the target region; a first detection module comprising a stack of first scintillators and first photosensors respectively connected to the first scintillators and configured to detect the electromagnetic radiation and convert into a first signal; a second detection module comprising a stack of second scintillators and second photosensors respectively connected to the second scintillators and configured to detect the electromagnetic radiation and convert into a second signal; and a coincidence detection circuit configured to determine an end point of the particle beam with respect to the first direction based on the first signal and the second signal.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: February 23, 2021
    Assignee: VIEWORKS CO., LTD.
    Inventor: Denny Lap Yen Lee
  • Patent number: 10930031
    Abstract: A method for synchronizing list-mode data of single events in a PET imaging includes: acquiring list-mode data of single events of each independent detector module, calculating a probability density of time intervals between occurrences of single events in detector module and setting initial parameters, determining detection starting time difference of each detector module with iterative peak searching and graded time window, and performing synchronization correction and coincidence discrimination on the single event data in each detector module based on the detection starting time difference. A system for synchronizing list-mode data of single events in a PET imaging includes: a data acquisition and frequency difference compensation module, an initial parameter setting module, a coarse time scale coincidence module, a fine time scale coincidence module and a data synchronization correction and coincidence discrimination module.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: February 23, 2021
    Assignee: RAYCAN TECHNOLOGY CO., LTD. (SU ZHOU)
    Inventors: Qingguo Xie, Yuanbao Chen, Jun Zhu, Xin Chen, Zhongyi Wu, Luyao Wang
  • Patent number: 10909731
    Abstract: The disclosure relates to a system and method for correcting PET image data. PET image data of a first part of a subject may be obtained. CT image data of a second part of the subject may be obtained. The first part may include the second part. PET voxel data of the first part may be obtained based on the PET image data of the first part. A relationship between the CT image data and PET voxel data of the second part may be determined. CT image data of a third part of the subject may be determined based on the relationship and PET voxel data of the third part. The first part may include the third part. An attenuation map may be determined based on the CT image data of the second part and the third part. The PET image data of the first part may be corrected based on the attenuation map.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: February 2, 2021
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Xiaoyue Gu, Tianyi Xu, Youjun Sun, Weiping Liu
  • Patent number: 10908492
    Abstract: This application provides an image processing method and an electronic device. The method includes: obtaining a first image and a second image that are acquired at a same acquisition moment, where the first image is obtained by using a first photographing unit to acquire an image in a first acquisition region, and the second image is obtained by using a second photographing unit to acquire an image in a second acquisition region, where a parameter of the first photographing unit and a parameter of the second photographing unit are the same, and there is an overlapping acquisition region between the first acquisition region and the second acquisition region; and determining, according to the first image and the second image, whether the first photographing unit and the second photographing unit are normal.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: February 2, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Cheng Du, Wei Luo, Bin Deng
  • Patent number: 10910418
    Abstract: Methods and systems for reading out a pixel array are provided. An example system may be configured to represent the activity of at least two pixels in the array as at least two digital signals. Further, the example system may be configured to dynamically aggregate the at least two digital signals into one representative analog signal corresponding to the activity of the at least two pixels.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: February 2, 2021
    Assignee: KISKEYA MICROSYSTEMS LLC
    Inventor: Babak Nouri
  • Patent number: 10884143
    Abstract: Provided is a radiographic imaging apparatus including a photon-counting detector that prevents variation in count rate performance by using self-heating of a photon-counting circuit, and improves accuracy in detecting photons. The photon-counting detector is provided with a semiconductor layer configured to generate electrical charge upon receipt of photons of radiation, a photon-counting circuit configured to read current values from pixel electrodes formed on one of the semiconductor surfaces, and a heat amount compensator configured to control an amount of heat of the photon-counting circuit according to a count rate of the photon-counting circuit. The heat amount compensator is activated when the count rate is low so that the amount of heat delivered from the photon-counting circuit when the count is low becomes nearly equal to the amount of heat delivered from the photon-counting circuit when the count rate is high.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: January 5, 2021
    Assignee: Hitachi, Ltd.
    Inventor: Masafumi Onouchi
  • Patent number: 10867085
    Abstract: Techniques that facilitate overlaying and integrating computer aided design drawings with fluid models are presented. For example, a system includes a modeling component, a machine learning component, and a graphical user interface component. The modeling component generates a three-dimensional model of a mechanical device based on a library of stored data elements. The machine learning component predicts one or more characteristics of the mechanical device based on a machine learning process associated with the three-dimensional model. The machine learning component also generates physics modeling data of the mechanical device based on the one or more characteristics of the mechanical device. The graphical user interface component generates, for a display device, a graphical user interface that presents the three-dimensional model and renders the physics modeling data on the three-dimensional model.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: December 15, 2020
    Assignee: General Electric Company
    Inventors: Zain S. Dweik, Serhan Derikesen, Ozan Erciyas
  • Patent number: 10863678
    Abstract: The present disclosure relates to a sunlight converting device including a wavelength converting film using a wavelength conversion material such as a quantum dot or an inorganic phosphor. More particularly, the present disclosure provides a sunlight converting device including a wavelength converting film using a wavelength conversion material, which can optimize plant growth and provide improved plant quality by installing a wavelength converting film on which a wavelength conversion material is applied so as to be converted into a predetermined wavelength and output to a greenhouse, (glasshouse), a vinyl house or a microalga culture facility, varying the sunlight irradiation area of the wavelength converting film, and supplying light of various wavelengths required for species of plant including microalgae or growth cycles thereof.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: December 15, 2020
    Assignee: SHERPA SPACE INC.
    Inventors: Choamun Yun, Wonjoon Choi
  • Patent number: 10792005
    Abstract: Anatomic range planning is provided in positron emission tomography (PET). The user indicates one or more ranges on an image of a patient based on anatomy. Rather than planning by bed position, the planning is based on the anatomy of the patient without reference to the length of the PET detector. The user interface for PET examination avoids overlapping boxes and other confusion based on bed position. Different anatomical ranges may be assigned different PET parameters, such as reconstruction parameters. A processor may automatically alter the examination (e.g., by extending the detection range beyond the region of interest or by increasing duration at an end position) to account for the sensitivity profile since the anatomical region of interest is known. Anatomical region specific directions may be included as part of planning, aiding in performing different protocols for different anatomical ranges.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: October 6, 2020
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Matthew Mitchell, Shiv Shanker Verma, Collin Schaeffer
  • Patent number: 10797196
    Abstract: A photodetector includes a Geiger mode avalanche photodiode, which includes a body of semiconductor material, which is delimited by a front surface. The avalanche photodiode further includes: a cathode region having a first type of conductivity, which forms the front surface; and an anode region having a second type of conductivity, which extends in the cathode region starting from the front surface. The photodetector further includes: a dielectric region, arranged on the front surface; a quenching resistor, which extends on the dielectric region, is electrically connected to the anode region, and is laterally spaced apart with respect to the anode region; and an optical-isolation region, which extends through the dielectric region and laterally delimits a portion of the dielectric region, the anode region extending underneath the portion of the dielectric region, the optical-isolation region being moreover interposed between the portion of the dielectric region and the quenching resistor.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: October 6, 2020
    Assignee: STMICROELECTRONICS S.R.L.
    Inventors: Massimo Cataldo Mazzillo, Valeria Cinnera Martino
  • Patent number: 10765394
    Abstract: Anatomic range planning is provided in positron emission tomography (PET). The user indicates one or more ranges on an image of a patient based on anatomy. Rather than planning by bed position, the planning is based on the anatomy of the patient without reference to the length of the PET detector. The user interface for PET examination avoids overlapping boxes and other confusion based on bed position. Different anatomical ranges may be assigned different PET parameters, such as reconstruction parameters. A processor may automatically alter the examination (e.g., by extending the detection range beyond the region of interest or by increasing duration at an end position) to account for the sensitivity profile since the anatomical region of interest is known. Anatomical region specific directions may be included as part of planning, aiding in performing different protocols for different anatomical ranges.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: September 8, 2020
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Matthew Mitchell, Shiv Shanker Verma, Collin Schaeffer
  • Patent number: 10760960
    Abstract: A coincidence resolving time readout circuit is described. An analog SiPM sensor for detecting photons and generating an SIPM output signal is provided. An ADC is configured to provide multiple threshold values for converting the analogue SiPM output signal to digital values. A time to digital converter configured to receive multiple digital values from the ADC and timestamp the digital values.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: September 1, 2020
    Assignee: SENSL TECHNOLOGIES LTD.
    Inventors: Salvatore Gnecchi, John Carlton Jackson, Edoardo Charbon
  • Patent number: 10754048
    Abstract: Methods, devices and systems for correcting a count loss in a Position Emission Computed Tomography (PET) system are provided. In one aspect, a method includes: constructing a virtual system including a plurality of virtual crystals, determining, for each of virtual Lines of Response (LORs) in the virtual system, a plurality of real LORs corresponding to the virtual LOR in the PET system, each of the real LORs corresponding to a scanning state of the PET system with a continuous incremental scanning mode, determining a count loss correction factor of the corresponding real LOR in each of the scanning states, determining a count loss correction factor of the virtual LOR according to the determined count loss correction factors of the plurality of real LORs corresponding to the virtual LOR, and performing count loss correction for the virtual LOR according to the determined count loss correction factor of the virtual LOR.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: August 25, 2020
    Assignee: Shanghai Neusoft Medical Technology Co., Ltd.
    Inventors: Jie Chang, Shaolian Liu, Ming Li
  • Patent number: 10732305
    Abstract: The present disclosure provides a positron emission tomography (PET) system and an image reconstruction method thereof. The PET system may include a plurality of annular detector units arranged along an axial direction. Each of the detector units may generate a plurality of single event counts. The PET system may further include a plurality of coincidence logic circuits connected to one or more of the detector units. The coincidence logic circuits may be configured to count coincidence events. Single event data generated by each of the detector units may be transmitted to the corresponding coincidence logic circuit. The plurality of coincidence logic circuits may synchronically generate coincidence counts relating to the plurality of detector units.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: August 4, 2020
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Hongdi Li, Yun Dong, Yang Lyu
  • Patent number: 10719960
    Abstract: Methods, devices and apparatus for reconstructing an image are provided. In an aspect, a method includes: obtaining coincidence events detected by crystal pairs in a detector of a PET device by scanning a phantom, reconstructing a phantom image according to the coincidence events, and obtaining a time calibration amount of each of crystals in the detector by determining a crystal based source position deviation and a crystal based source time difference of a crystal pair including the crystal according to the phantom image, determining a time difference of the crystal pair according to respective time differences for the crystal pair detecting a plurality of coincidence events, pre-calibrating the time difference of the crystal pair with the crystal based source time difference, and obtaining the time calibration amount of the crystal according to the pre-calibrated time difference of the crystal pair.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: July 21, 2020
    Assignee: Shanghai Neusoft Medical Technology Co., Ltd.
    Inventors: Shaolian Liu, Jie Chang, Ming Li