Methods Patents (Class 250/362)
  • Patent number: 11801021
    Abstract: Interstitial brachytherapy is a cancer treatment in which radioactive material is placed closely to the target tissue of the affected site using an afterloader (HDR-brachytherapy) or manually (LDR- and PDR-brachytherapy). For HDR-brachytherapy, the accuracy of this placement is calibrated using an external reference system that locates the radioactive material according to the radiation levels measured at locations around the source. At each of these locations, a scintillator produces light when irradiated by the radioactive material. This light is proportional to the level of radiation at each location. The light produced by each scintillator is converted to an electrical signal that is proportional to the light and the radiation level at each location. The radioactive material is located according to the plurality of electrical signals.
    Type: Grant
    Filed: February 28, 2022
    Date of Patent: October 31, 2023
    Inventors: Luis Miguel da Conceição Moutinho, Joana Isabel Ferreira dos Santos Melo
  • Patent number: 11774605
    Abstract: A scintillator unit that can reduce crosstalk when the scintillator unit includes a plurality of scintillators and a radiation detector are provided. More specifically, a scintillator unit includes a reflective layer between a plurality of scintillators and the plurality of scintillators, wherein an adhesive layer and a low-refractive-index layer with a lower refractive index than the adhesive layer are located in this order on the scintillators between the scintillators and the reflective layer.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: October 3, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Saito, Nobuhiro Yasui, Yoshihiro Ohashi, Yoshinori Kotani, Satoshi Yamabi
  • Patent number: 11756674
    Abstract: Adaptive imaging methods and systems for generating enhanced low light video of an object for medical visualization are disclosed and include acquiring, with an image acquisition assembly, a sequence of reference frames and/or a sequence of low light video frames depicting the object, assessing relative movement between the image acquisition assembly and the object based on at least a portion of the acquired sequence of reference video frames or the acquired sequence of low light video frames, adjusting a level of image processing of the low light video frames based at least in part on the relative movement between the image acquisition assembly and the object, and generating a characteristic low light video output from a quantity of the low light video frames, wherein the quantity of the low light video frames is based on the adjusted level of image processing of the low light video frames.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: September 12, 2023
    Assignee: Stryker European Operations Limited
    Inventors: John J. P. Fengler, Paul Roald Westwick, Frederick Allen Moore
  • Patent number: 11733402
    Abstract: A scintillator unit that can reduce crosstalk when the scintillator unit includes a plurality of scintillators and a radiation detector are provided. More specifically, a scintillator unit includes a reflective layer between a plurality of scintillators and the plurality of scintillators, wherein an adhesive layer and a low-refractive-index layer with a lower refractive index than the adhesive layer are located in this order on the scintillators between the scintillators and the reflective layer.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: August 22, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Saito, Nobuhiro Yasui, Yoshihiro Ohashi, Yoshinori Kotani, Satoshi Yamabi
  • Patent number: 11650335
    Abstract: A method for determining position and energy in scintillation detectors includes determining a photoconversion energy and a photoconversion position of particles triggering scintillation events, in an iteration-free manner, calculated from a distribution of scintillation light released by one or more of the scintillation events. The distribution of scintillation light is scanned by a photodetector.
    Type: Grant
    Filed: September 26, 2020
    Date of Patent: May 16, 2023
    Assignee: FORSCHUNGSZENTRUM JUELICH GMBH
    Inventors: Christoph Lerche, Wenwei Bi, Nadim Joni Shah
  • Patent number: 11645748
    Abstract: The present disclosure discloses a three-dimensional automatic location system for an epileptogenic focus based on deep learning. The system includes: a PET image acquisition and labelling module; a registration module mapping PET image to standard symmetrical brain template; a PET image preprocessing module generating mirror image pairs of left and right brain image blocks; a network SiameseNet training module containing two deep residual convolutional neural networks which share weight parameters, an output layer connecting a multilayer perceptron and a softmax layer, and using a training set of an epileptogenic focus image and an normal image to train the network to obtain a network model; a classification module and epileptogenic focus location module, using the trained network model to generate a probabilistic heatmap for the newly input PET image, a classifier determining whether the image is normal or epileptogenic focus sample, and then predicting a position for the epileptogenic focus region.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: May 9, 2023
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Cheng Zhuo, Mei Tian, Hong Zhang, Qinming Zhang, Teng Zhang, Yi Liao, Xiawan Wang, Jianhua Feng
  • Patent number: 11622737
    Abstract: A system and method include acquisition of positron emission tomography data of an object while a radiation source moves within the object, determination of a plurality of locations within the object, each of the plurality of locations associated with a respective time at which the radiation source was located at the location, determination of a respective time period associated with each of the plurality of locations, determination, for each of the determined time periods, of a frame of the positron emission tomography data associated with the determined time period, and, for each frame of the positron emission tomography data, generation of an image based on the frame and on the location associated with the time period associated with the frame.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: April 11, 2023
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Vijay Shah, Sven Zuehlsdorff
  • Patent number: 11619750
    Abstract: A scintillator structure includes a plurality of cells and a reflector covering the plurality of cells. Here, each of the plurality of cells includes a resin and a phosphor, and the phosphor contains gadolinium oxysulfide. A breaking strength of an interface between each of the plurality of cells and the reflector is 900 gf or more.
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: April 4, 2023
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yousuke Nobumoto, Shinsuke Terazawa, Satoshi Shiota
  • Patent number: 11576629
    Abstract: A method for adaptive coincidence data processing is provided. The method includes detecting positron annihilation events with a detector array of a positron emission tomography (PET) scanner, wherein the PET scanner includes multiple detector rings disposed along a longitudinal axis of the PET scanner, and each detector ring includes multiple detectors. The method also includes, within a given time period, dynamically adjusting a number of positron annihilation events accepted and transmitted to acquisition circuitry for processing utilizing a numerical difference in detector rings along the longitudinal axis between a first detector and a second detector detecting respective annihilation photons from a positron annihilation event.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: February 14, 2023
    Assignee: GE Precision Healthcare LLC
    Inventor: Floribertus Philippus Martinus Heukensfeldt Jansen
  • Patent number: 11527321
    Abstract: An augmented reality system includes a head-mountable augmented reality platform (152) having a display to provide guidance to a user. A prediction module (115) is trained in a procedure and is configured to predict a next activity in the procedure based on a current condition. An image generation module (148) is responsive to the prediction module to provide a visual cue of a predicted next activity to the user through the head-mountable augmented reality platform.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: December 13, 2022
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Molly Lara Flexman, Ayman Alalao, Ashish Panse
  • Patent number: 11510636
    Abstract: A method and system for using in a Positron Emission Tomography (PET) system. The PET system comprises at least one processor and a storage. The PET system comprises an acquisition module and a processing module. The acquisition module is configured to acquire a PET data set corresponding to a target object. The acquisition module comprises a first light sensor array, a second light sensor array, and a scintillator array. The processing module is configured to determine a three-dimensional position of an incidence photon based on the PET data set. The first number of light sensors in the first light sensor array and the second number of light sensors of the second light sensor array is less than the number of scintillator of the scintillator array.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: November 29, 2022
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventor: Ze Chen
  • Patent number: 11508048
    Abstract: The present disclosure discloses a method and a system for generating a composite PET-CT image based on a non-attenuation-corrected PET image. The method includes: constructing a first generative adversarial network and a second generative adversarial network; obtaining a mapping relationship between a non-attenuation-corrected PET image and an attenuation-corrected PET image by training the first generative adversarial network; obtaining a mapping relationship between the attenuation-corrected PET image and a CT image by training the second generative adversarial network; and generating the composite PET-CT image by utilizing the obtained mapping relationships. According to the present disclosure, a high-quality PET-CT image can be directly composited from a non-attenuation-corrected PET image, and medical costs can be reduced for patients, and radiation doses applied to the patients in examination processes can be minimized.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: November 22, 2022
    Assignee: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
    Inventors: Zhan Li Hu, Dong Liang, Yong Chang Li, Hai Rong Zheng, Yong Feng Yang, Xin Liu
  • Patent number: 11454597
    Abstract: The method and device to ensure a safety of people's life and health is based on measurements of spontaneous electromagnetic radiation caused by a deformation from a structure or device, a nucleation and growth of plant cells and living organisms; calculating an energy stored in a portion of the structure or cells based on a measured intensity; performing a comparison of the energy stored with a critical value for the structure and pathological changes in the cells; and indicate a potential failure of the structure or a level of pathological changes based on the performed comparison.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: September 27, 2022
    Inventor: Volodymyr Pavlovich Rombakh
  • Patent number: 11415458
    Abstract: A photoelectric conversion apparatus includes a photodiode, a counter, a control circuit. The photodiode is configured to cause avalanche multiplication. The counter is configured to generate a count signal as a result of counting a pulse generated by the avalanche multiplication during a predetermined period. The control circuit is configured to perform control to bring the photodiode into a waiting state in which the avalanche multiplication is possible and a stop state in which the avalanche multiplication is stopped, based on the count signal during a predetermined period.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: August 16, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yasuharu Ota
  • Patent number: 11402523
    Abstract: The present disclosure relates to scintillating detector systems for radiation therapy beams. In one implementation, a detector system for evaluating radiation delivered by a radiation beam output from a beam generator may include a phantom enclosing an internal volume and having an outer surface, extending around the internal volume, for exposure to radiation, and an inner surface coated, at least in part, with a scintillating material and facing the internal volume. The system may further include a camera external to the enclosed volume and configured to view at least a portion of the inner surface, through an opening of the hollow phantom, when radiated by the radiation beam. The system may further include at least one processor configured to receive images from the camera and calculate, based on the received images, a spatial dose distribution produced by the radiation delivered by the radiation beam to the hollow phantom.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: August 2, 2022
    Assignee: ion Beam Applications S.A.
    Inventors: David Menichelli, Timo Hausbeck, Lutz Müller
  • Patent number: 11375962
    Abstract: An X-ray imaging system includes a frame; a gantry mounted on the frame; an electromagnetic linear drive coupled to the gantry for translating the gantry in a horizontal direction; a C-arm mounted on the gantry, the C-arm rotatable across at least a 90 degree angle; an X-ray source mounted to one end of C-arm; an X-ray detector array mounted to the opposite end of the C-arm. The array is formed of a plurality of array elements, each array element formed of a plurality of linear detectors. Each array element is mounted perpendicular to a radial line between a focal spot of the X-ray source and a middle of each array element, and the X-ray detector array has a focal point at the X-ray source.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: July 5, 2022
    Assignee: Linev Systems, Inc.
    Inventor: Vladimir N. Linev
  • Patent number: 11367739
    Abstract: A semiconductor device capable of retaining a signal sensed by a sensor element is provided. The semiconductor device includes a sensor element, a first transistor, a second transistor, and a third transistor. One electrode of the sensor element is electrically connected to a first gate. The first gate is electrically connected to one of a source and a drain of the third transistor. One of a source and a drain of the first transistor is electrically connected to a gate of the second transistor. A semiconductor layer includes a metal oxide.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: June 21, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yuki Okamoto, Yoshiyuki Kurokawa, Naoto Kusumoto
  • Patent number: 11360222
    Abstract: The present invention provides for a composition comprising an inorganic scintillator comprising an optionally lanthanide-doped cesium barium halide, useful for detecting nuclear material.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: June 14, 2022
    Assignee: The Regents of the University of California
    Inventors: Ramesh B. Borade, Gregory A. Bizarri, Edith D. Bourret-Courchesne, Stephen E. Derenzo, Stephen M. Hanrahan, Zewu Yan, Anurag Chaudry, Andrew Canning
  • Patent number: 11307314
    Abstract: A scintillating material that is a radiation hardened plastic and flexible elastomer is disclosed. The material is useful in a wide range of high energy particle environments and can be used to create detectors. Such detectors can be used in physics experiments or in medical treatment or imaging. The scintillator can be radiation hardened so as to allow for an extended lifetime over other materials.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: April 19, 2022
    Assignee: University of Iowa Research Foundation
    Inventors: Ugur Akgun, Yasar Onel
  • Patent number: 11291419
    Abstract: Interstitial brachytherapy is a cancer treatment in which radioactive material is placed closely to the target tissue of the affected site using an afterloader (HDR-brachytherapy) or manually (LDR- and PDR-brachytherapy). For HDR-brachytherapy, the accuracy of this placement is calibrated using an external reference system that locates the radioactive material according to the radiation levels measured at locations around the source. At each of these locations, a scintillator produces light when irradiated by the radioactive material. This light is proportional to the level of radiation at each location. The light produced by each scintillator is converted to an electrical signal that is proportional to the light and the radiation level at each location. The radioactive material is located according to the plurality of electrical signals.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: April 5, 2022
    Inventors: Luis Miguel da Conceição Moutinho, Joana Isabel Ferreira dos Santos Melo
  • Patent number: 11287540
    Abstract: Disclosed herein are methods and devices for the acquisition of positron emission (or PET) data in the presence of ionizing radiation that causes afterglow of PET detectors. In one variation, the method comprises adjusting a coincidence trigger threshold of the PET detectors during a therapy session. In one variation, the method comprises adjusting a gain factor used in positron emission data acquisition (e.g., a gain factor used to multiply and/or shift the output(s) of a PET detector(s)) during a therapy session. In some variations, a method for acquiring positron emission data during a radiation therapy session comprises suspending communication between the PET detectors and a signal processor of a controller for a predetermined period of time after a radiation pulse has been emitted by the linac.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: March 29, 2022
    Assignee: RefleXion Medical, Inc.
    Inventors: Peter Demetri Olcott, Matthew Francis Bieniosek, Brent Harper
  • Patent number: 11280890
    Abstract: A method for determining a distance to a target by a geodetic instrument is disclosed. The method comprises emitting an optical pulse towards a target at an emission time, applying a bias adjustment to a photodiode that is arranged to receive a return optical pulse reflected at the target, obtaining a reference signal that is indicative of a transient behavior of the photodiode for the bias adjustment, obtaining a difference signal by subtracting, from a signal output from the photodiode, a signal that resembles, or is equal to, the transient behavior of the photodiode in response to the bias adjustment based on the reference signal, extracting a reception time that corresponds to reception of the return optical pulse at the photodiode based at least in part on the difference signal, and determining the distance to the target based on the emission time and the reception time.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: March 22, 2022
    Assignee: Trimble AB
    Inventor: Claes Ekengren
  • Patent number: 11278252
    Abstract: A workstation 5 links an X-ray image conforming to the Dicom standard and exposure dose data prepared by an exposure measurement system 7 with use of information on the imaging date and time of the X-ray image conforming to the Dicom standard and information on the imaging date and time of the exposure dose data prepared by the exposure measurement system 7. This enables the workstation 5 to calculate an exposure dose corresponding to each X-ray image. Also, the workstation 5 calculates an exposure dose corresponding to each X-ray examination on the basis of data on the start time and end time of the examination received from a console part 1. An examination time and an imaging technique at each examination, data including information on a subject, and information indicating an exposure dose corresponding to the examination are configured as one piece of data and displayed on a display part 51 of the workstation 5.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: March 22, 2022
    Assignee: Shimadzu Corporation
    Inventors: Daisuke Notohara, Shinsuke Kanazawa, Tomoharu Okuno
  • Patent number: 11259768
    Abstract: An apparatus for beta-emission two-dimensional imaging including: a beta ray detector configured to receive, from an imaging target containing a first nuclide and a second nuclide, a beta ray based on the first or second nuclide and thereby detect the beta ray, the beta ray detector outputting a beta ray detection signal including location information indicating a detection location of the beta ray on a two-dimensional basis; a gamma ray detector configured to detect a gamma ray, the gamma ray detector detecting the first and second peculiar gamma rays in a discriminable manner; and an imaging processor configured to be capable of generating a distribution image of the first nuclide and a distribution image of the second nuclide in a discriminable manner.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: March 1, 2022
    Assignee: RIKEN
    Inventor: Tomonori Fukuchi
  • Patent number: 11262463
    Abstract: The present invention provides a detector and an emission tomography device including the detector. The detector comprises: a scintillation crystal array comprising a plurality of scintillation crystals; and a photo sensor array, coupled to an end surface of the scintillation crystal array and comprising multiple photo sensors. At least one of the multiple photo sensors is coupled to a plurality of the scintillation crystals respectively. Surfaces of the plurality of the scintillation crystals not coupled to the photo sensor array are each provided with a light-reflecting layer, and a light-transmitting window is disposed in the light-reflecting layer on a surface among the surfaces adjacent to a scintillation crystal coupled to an adjacent photo sensor. The detector has DOI decoding capability. No mutual interference occurs during DOI decoding, and decoding is more accurate.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: March 1, 2022
    Assignee: ZHONGPAI S&T (SHENZHEN) CO., LTD
    Inventors: Siwei Xie, Xi Zhang, Fenghua Weng, Zhixiang Zhao, Yunlong Zan, Qiu Huang
  • Patent number: 11255987
    Abstract: Methods for calibrating a Nuclear-Medicine (N-M) imaging system including calibrating an N-M imaging system scanning unit for scanning detector uniformity map and energy resolution as well as generating an angular orientation map of a plurality of scanning units and a line source of radiation. There is further disclosed a jig for holding a line source during a calibration process of an N-M imaging system.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: February 22, 2022
    Assignee: Spectrum Dynamics Medical Limited
    Inventors: Nathaniel Roth, Yoel Zilberstien
  • Patent number: 11248169
    Abstract: The disclosure relates to a scintillator material for a radiation detector. In an embodiment, the scintillator material can include a crystalline alkaline-earth metal halide comprising at least one alkaline-earth metal selected from Mg, Ca, Sr, Ba, said alkaline-earth metal halide being doped with at least one dopant that activates the scintillation thereof other than Sm2+, and co-doped with Sm2+, said alkaline-earth metal halide comprising at least one halogen selected from Br, Cl, I.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: February 15, 2022
    Assignees: STICHTING VOOR DE TECHNISCHE WETENSCHAPPEN, UNIVERSITE DE BERNE
    Inventors: Pieter Dorenbos, Karl Krämer, Mikhail Alekhin
  • Patent number: 11249205
    Abstract: A method for determining a bias (?i,j) affecting at least one pixel of a detector (1) of ionizing radiation, the detector comprising a plurality of pixels (10i,j), each pixel being configured to collect charge carriers (6) generated by an interaction of the ionizing radiation in the detector, and to form a pulsed signal under the effect of the generation and collection of the charge carriers, the pixels being distributed in a matrix array, the method comprising: a) following the occurrence of an interaction in the detector, determining a pixel forming a pulse that exceeds an amplitude threshold, during a detection time interval; b) among each pixel determined in step a), selecting a pixel of interest that generates a highest amplitude; c) selecting at least one distant pixel (10f), the position of the distant pixel, with respect to the pixel of interest, being defined beforehand; d) measuring an amplitude of a signal generated by each distant pixel; e) on the basis of each measurement performed in step d),
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: February 15, 2022
    Assignee: Commissariat à l'Energie Atomique et aux Energies Alternatives
    Inventor: Sylvain Stanchina
  • Patent number: 11103199
    Abstract: A method of conducting a multi-pass dynamic positron emission tomography (PET) scans using continuous bed motion (CBM) mode is disclosed where the method involves acquiring PET sinogram data using CBM mode as the patient bed is moving in a first direction; acquiring PET sonogram data using CBM mode as the patient bed is moving in a second direction that is opposite from the first direction; and reconstructing 3-D PET image from the acquired PET sonogram data.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: August 31, 2021
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Jicun Hu, Vladimir Y. Panin, Anne M. Smith, William Curtis Howe, Vijay Shah, Frank Kehren, Michael E. Casey, Matthew Baker, Bernard Bendriem
  • Patent number: 11096651
    Abstract: Methods and systems are provided for calibrating a nuclear medicine imaging system having more than 5 detector heads. In one embodiment, a method includes obtaining residual center of gravity determinations corresponding to each of a plurality of detector units based on point source projections acquired over a series of detector unit rotational steps, obtaining center of gravity determinations for each of the plurality of detector units based on point source projections acquired over a series of detector unit sweep angles, obtaining a fit of the center of gravity determinations for each of the plurality of detector units, and determining a sweep offset for each of the plurality of detector units based on the residual center of gravity determinations and the fit of the center of gravity determinations for each of the plurality of detector units. In this way, a sweep axis zero degree position for each of the plurality of detector units is determined.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: August 24, 2021
    Assignee: GE Precision Healthcare LLC
    Inventors: Sergio Steinfeld, Moshe Levy, Amir Abecassis, Jean-Paul Bouhnik, Ilya Dudarev, Omri Warshavski, Roee Khen, Jonathan Sachs, Rani Zananiri
  • Patent number: 11096647
    Abstract: Systems and methods for digital radiography are provided. The method may be implemented on the implemented on a DR system including an imaging device and a computing device. The computing device may include at least one processor and at least one storage device. The method may include directing multiple dose sensors to detect a dose of radiation rays emitted from a radiation source of the imaging device. The multiple dose sensors may correspond to multiple imaging detectors, respectively. The method may also include determining the dose of the radiation rays. The method may further include directing, based on the dose of the radiation rays, at least one imaging detector of the multiple imaging detectors to proceed to detect the radiation rays for generating an image of a target object to be examined.
    Type: Grant
    Filed: December 30, 2018
    Date of Patent: August 24, 2021
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventor: Xunsan Tao
  • Patent number: 11090018
    Abstract: A radiation imaging apparatus is provided. The apparatus comprises: an imaging region in which a plurality of conversion elements are arranged, wherein the plurality of conversion elements includes a first conversion element configured to obtain a radiation image and a second conversion element configured to obtain irradiation information of incident radiation during radiation irradiation; a storage unit configured to store correction data for correcting a signal output from the first conversion element; and a control unit. The control unit determines a period to cause the first conversion element to perform an accumulation operation in accordance with the irradiation information, determines a correction amount corresponding to the period based on the correction data, and generates a radiation image signal by correcting a signal output from the first conversion element in accordance with the correction amount after the radiation irradiation.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: August 17, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Minoru Watanabe, Kentaro Fujiyoshi, Sho Sato
  • Patent number: 11045160
    Abstract: A radiation imaging apparatus is provided. The apparatus comprises: an imaging region in which a plurality of conversion elements are arranged, wherein the plurality of conversion elements includes a first conversion element configured to obtain a radiation image and a second conversion element configured to obtain irradiation information of incident radiation during radiation irradiation; a storage unit configured to store correction data for correcting a signal output from the first conversion element; and a control unit. The control unit determines a period to cause the first conversion element to perform an accumulation operation in accordance with the irradiation information, determines a correction amount corresponding to the period based on the correction data, and generates a radiation image signal by correcting a signal output from the first conversion element in accordance with the correction amount after the radiation irradiation.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: June 29, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Minoru Watanabe, Kentaro Fujiyoshi, Sho Sato
  • Patent number: 11046589
    Abstract: The present invention discloses a multi-element perovskite material, and a single crystal, powder and a film thereof, as well as the applications thereof in photoluminescence and electroluminescence, in which the multi-element perovskite material is a multi-element fully-inorganic salt of non-lead metal halide and has a perovskite structure; and the chemical formula of the multi-element perovskite material is Cs2NaxAg1-xInyBi1-yCl6, wherein 0?x?1, 0?y?1. Meanwhile, based on the very strong self-trapped exciton states of the double perovskite, the present invention proposes a high-efficiency single-phase broadband phosphor and an electroluminescent device.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: June 29, 2021
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Jiang Tang, Shunran Li, Guangda Niu, Jiajun Luo, Qingsong Hu, Jing Liu
  • Patent number: 11002866
    Abstract: A scattering estimation method includes determining a convolution kernel for smoothing a single scattering distribution based on a scattered radiation index value (R) of a radioactive image (5) (S4) and fitting, to positron emission tomography measurement data, a scattering distribution smoothed by applying the convolution kernel to the single scattering distribution (S5).
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: May 11, 2021
    Assignee: Shimadzu Corporation
    Inventor: Yoshiyuki Yamakawa
  • Patent number: 10967201
    Abstract: A radiation monitor 1 includes a light-emitting unit 10 which generates light having an intensity depending on an amount of an incident radiation, an optical fiber 20 which sends a photon generated by the light-emitting unit 10, a photoelectric converter 30 which transmits one electric pulse to one sent photon, a dose calculation device 40 which counts the electric pulse amplified by the photoelectric converter 30 and converts the counted value of the measured electric pulses into a dose of the radiation, and a display device 50. The dose calculation device 40 counts the electric signals converted from the photon by the photoelectric converter 30 to calculate a counting rate, and stops the counting when the counting rate exceeds a predetermined threshold, and performs counting when the counting rate is less than the threshold.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: April 6, 2021
    Assignee: HITACHI, LTD.
    Inventors: Yuichiro Ueno, Takahiro Tadokoro, Yasushi Nagumo, Shuichi Hatakeyama, Katsunori Ueno, Kouichi Okada
  • Patent number: 10962661
    Abstract: Methods and systems for detecting a three-dimensional position of a scintillation event converting a radiation into a light. For example, a system includes a crystal array including a plurality of crystal elements arranged at least along a first direction and a second direction, the plurality of crystal elements extending along a third direction between a first end and a second end, the plurality of crystal elements being configured to receive the radiation entered from the second end; wherein: the plurality of crystal elements is arranged into a plurality of crystal pairs; each of the plurality of crystal pairs optically coupled to one light bridge at the first end extending and bridging light along the first direction; each of the plurality of crystal pairs is optically coupled for the light in the second direction with at least a neighboring crystal pair only through two light tunnels.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: March 30, 2021
    Assignee: Shanghai United Imaging Intelligence Co., Ltd.
    Inventors: Hongdi Li, Shaohui An
  • Patent number: 10928323
    Abstract: In the present invention, a detection device has a chip holder, an excitation-light radiation unit, and a heat source. The chip holder is used for positioning a detection chip that has: a prism; a metal film; a trapping body; and a substrate. The excitation-light radiation unit radiates excitation light at the reaction site via the light-entry surface of the detection chip, which is held by the chip holder. The heat source is disposed in a position so as to face, in a non-contacting manner, the surface of the prism of the detection chip held by the chip holder that is closest to the reaction site, and so as not to interfere with the optical path of the excitation light. The chip holder positions the detection chip while in contact with only the reverse surface of the substrate and/or a convex portion positioned on the prism.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: February 23, 2021
    Assignee: KONICA MINOLTA, INC.
    Inventor: Yuta Suzuki
  • Patent number: 10873404
    Abstract: A method for finding an orthogonal direction of a radiation source with respect a digitally optimized interference pattern of a first fixed electromagnetic element and a second fixed electromagnetic element has been established. Determining a direction of a radiation source allows for dynamic control of moving object.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: December 22, 2020
    Inventor: Benjamin J. Egg
  • Patent number: 10869645
    Abstract: Adaptive imaging methods and systems for generating enhanced low light video of an object for medical visualization are disclosed and include acquiring, with an image acquisition assembly, a sequence of reference frames and/or a sequence of low light video frames depicting the object, assessing relative movement between the image acquisition assembly and the object based on at least a portion of the acquired sequence of reference video frames or the acquired sequence of low light video frames, adjusting a level of image processing of the low light video frames based at least in part on the relative movement between the image acquisition assembly and the object, and generating a characteristic low light video output from a quantity of the low light video frames, wherein the quantity of the low light video frames is based on the adjusted level of image processing of the low light video frames.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: December 22, 2020
    Assignee: Stryker European Operations Limited
    Inventors: John J. P. Fengler, Paul Roald Westwick, Frederick Allen Moore
  • Patent number: 10857245
    Abstract: There is provided a diagnostic imaging agent for early bone metastasis from cancer, containing trans-1-amino-[18F]fluorocyclobutanecarboxylic acid or a pharmaceutically acceptable salt thereof as an active ingredient.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: December 8, 2020
    Assignee: NIHON MEDI-PHYSICS CO., LTD.
    Inventors: Shuntaro Oka, Masaru Kanagawa, Akiharu Otaka, Masako Teramachi, Satoshi Watanabe, Toshie Nagatomo
  • Patent number: 10821307
    Abstract: A honeycomb rib structure in a rotating gantry of a proton includes an upper honeycombed rib plate and a lower honeycombed rib plate which are mounted in a cylindrical body through a plurality of connecting structures. The upper and lower honeycombed rib plates are symmetrically arranged, and are spliced by a plurality of basic structures which are in a regular hexagonal shape. Connecting nodes between the adjacent basic structures are of a ring structure. Densities of the upper and lower honeycombed rib plates are adjusted through a density increasing structure.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: November 3, 2020
    Assignee: HEFEI CAS ION MEDICAL AND TECHNICAL DEVICES CO., LTD.
    Inventors: Jinxing Zheng, Ming Li, Yuntao Song, Wuquan Zhang, Yong Cheng, Songzhu Yang, Yu Zhang
  • Patent number: 10816682
    Abstract: A radiation position detector includes a radiator including a medium that generates light in a first wavelength region and light in a second wavelength region by interacting with incident radiation, a first photodetector that includes a plurality of first two-dimensionally arranged pixels and detects the light in the first wavelength region, and a second photodetector that includes a plurality of second two-dimensionally arranged pixels and detects the light in the second wavelength region.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: October 27, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventor: Ryosuke Ota
  • Patent number: 10725187
    Abstract: Boron nitride nanotubes (BNNTs) with 1013 combined with a scintillation gas can serve as the basis for detecting thermal neutrons by detecting light from the decay products of the thermal neutron's absorption on the 10B atoms in the BNNT Material as the resultant decay products pass through the scintillating gas. BNNTs with 11B can be utilized as a scaffold for 238U and combined with a scintillation gas as the basis for detecting fast neutrons via detecting light from the fission decay products passing through the scintillating gas. Both technologies provide high spatial and temporal resolution for the detection of thermal neutrons and fast neutrons respectively.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: July 28, 2020
    Assignee: BNNT, LLC
    Inventors: Kevin C. Jordan, R. Roy Whitney
  • Patent number: 10690784
    Abstract: A 14C testing bottle, a 14C testing device, a 14C testing method, a sampling and preparation system and its implementation method are provided. The 14C testing bottle includes a pressure-bearing shell and a sample bin positioned in the pressure-bearing shell. A cavity is arranged in the sample bin and the 14C testing bottle is provided with an injection port connected to the cavity. The sample bin may diffuse the light produced in the cavity and at least part of the sample bin is transparent. An optical fiber channel is set on the pressure-bearing shell. One end of the optical fiber channel is connected with an external scintillation counter, and the other end of the optical fiber channel is connected with the transparent part of the sample bin. The 14C testing bottle may measure the 14C content in the carbon dioxide sample rapidly.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: June 23, 2020
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Zhongyang Luo, Yuxing Tang, Chunjiang Yu, Mengxiang Fang, Qinhui Wang, Tao Wang
  • Patent number: 10647914
    Abstract: Scintillating plastics resistant to crazing and fogging, methods of making and using the same are disclosed. The scintillating plastics include: one or more primary polymers present in an amount ranging from about 40 wt % to about 95 wt %; one or more secondary polymers present in an amount ranging from about 1 wt % to about 60 wt %; and one or more fluors present in an amount ranging from about 0.1 wt % to about 50 wt %. Methods of making such plastics include: creating a homogenous mixture of precursor materials including primary polymer, secondary polymer, and fluor in the amounts set forth above; and polymerizing the homogenous mixture. Methods of using such plastics include: exposing the scintillating plastic to one or more extreme environmental conditions for a predetermined amount of time without generating crazing or fogging within the scintillating plastic. Various additional features and specific embodiments of these inventive concepts are also disclosed.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: May 12, 2020
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Natalia P. Zaitseva, M. Leslie Carman, Andrew M. Glenn, Andrew Neil Mabe, Stephen A. Payne
  • Patent number: 10598800
    Abstract: The present disclosure relates to a process for fabricating a crystalline scintillator material with a structure of elpasolite type of theoretical composition A2BC(1-y)MyX(6-y) wherein: A is chosen from among Cs, Rb, K, Na, B is chosen from among Li, K, Na, C is chosen from among the rare earths, Al, Ga, M is chosen from among the alkaline earths, X is chosen from among F, Cl, Br, I, y representing the atomic fraction of substitution of C by M and being in the range extending from 0 to 0.05, comprising its crystallization by cooling from a melt bath comprising r moles of A and s moles of B, the melt bath in contact with the material containing A and B in such a way that 2s/r is above 1. The process shows an improved fabrication yield. Moreover, the crystals obtained can have compositions closer to stoichiometry and have improved scintillation properties.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: March 24, 2020
    Assignee: Saint-Gobain Cristaux et Detecteurs
    Inventors: Vladimir Ouspenski, Samuel Blahuta, Raphaël Huchet, Julien Lejay
  • Patent number: 10591630
    Abstract: A subsurface logging tool that is deployable in a wellbore that traverses a formation includes a gamma-ray scintillation detector with a thallium-based scintillator material. The scintillator material is suitable for high-temperature downhole environments (i.e., above 70° C.). As such, the scintillator material improves the performance of oilfield measurement(s) at temperatures above 70° C. and at least up to 175° C., when compared with the use of the other materials. The scintillator material may have an effective atomic number of at least sixty. The scintillator material may have the chemical formula Tl2LiY1-xCexCl6, where x is 0 to 1. Lithium (Li) may be partially or completely replaced by another alkali metal or by indium (In). Yttrium (Y) is partially or completely replaced by another rare earth element. Chlorine (Cl) is partially or completely replaced by another halide.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: March 17, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Markus Berheide, Cornelis Huiszoon
  • Patent number: 10534097
    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: August 29, 2017
    Date of Patent: January 14, 2020
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Huawei Jiang, Huaifang Jiang
  • Patent number: 10527741
    Abstract: Systems and methods for configuring a radiation detector are provided. A first event is detected at a first scintillator crystal of a first detector unit. A second coincident event is detected at a second scintillator crystal of a second detector unit adjacent to the first detector unit. Operating parameters are calculated for the first detector unit based on the coincident events.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: January 7, 2020
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Sanghee Cho, Robert Mintzer, Johannes Breuer