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1.发明公开公开(公告)号：US20230236328A1
公开(公告)日：2023-07-27
申请号：US17581005
申请日：2022-01-21
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Peng PENG , Yi QIANG , Xiaoli LI , Kent C. BURR , Manabu TESHIGAWARA
CPC classification number: G01T1/1642 , G01T1/2985 , A61B6/4258 , A61B6/037 , G01T1/1644 , G01T1/2018
Abstract: A method and apparatuses for a radiation detector apparatus, comprising a scintillator array comprising a plurality of scintillator crystals. The plurality of scintillator crystals includes a first scintillator crystal and a second scintillator crystal adjacent to the first scintillator crystal within the scintillator array. A photosensor array comprising a plurality of photosensors including a first photosensor configured to detect photons from the first scintillator crystal. A first separator positioned between the first scintillator crystal and the second scintillator crystal. First separator optically separates the first scintillator crystal and the second scintillator crystal such that the first photosensor detects photons from the first scintillator crystal and not from the second scintillator crystal.
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公开(公告)号：US20220104781A1
公开(公告)日：2022-04-07
申请号：US17495967
申请日：2021-10-07
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Manabu TESHIGAWARA
Abstract: A nuclear medicine diagnostic apparatus according to an embodiment includes a positron emission tomography (PET) detector, a scatterer, and processing circuitry. The scatterer is provided inside the PET detector. The processing circuitry detects a gamma ray scattered by the scatterer with the PET detector to identify a single event.
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公开(公告)号：US20180196144A1
公开(公告)日：2018-07-12
申请号：US15865504
申请日：2018-01-09
Applicant: Canon Medical Systems Corporation
Inventor： Manabu TESHIGAWARA
CPC classification number: G01T1/1642 , A61B6/032 , A61B6/037 , A61B6/0457 , A61B6/4241 , A61B6/5205 , A61B6/582 , A61B6/583 , G01T1/1644 , G01T1/1647 , G01T1/2985
Abstract: A nuclear medicine diagnostic apparatus according to an embodiment includes a scintillator configured to be formed of a single crystal and convert a gamma ray into light; a plurality of photodetectors configured to be arranged on different faces or tangents of the scintillator and each of which is configured to output an electric signal in response to incidence of the light resulting from the converting by the scintillator; storage circuitry configured to store, in advance, correspondence information in which each position in the scintillator is associated with a first intensity distribution indicating intensities of the electric signals that are output by the respective photodetectors; and specifying circuitry configured to specify a conversion position in which the gamma ray that is emitted from the subject is converted into the light in the scintillator by using the correspondence information and a second intensity distribution indicating the intensities of the electric signals.
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4.发明公开公开(公告)号：US20230337992A1
公开(公告)日：2023-10-26
申请号：US18306404
申请日：2023-04-25
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Manabu TESHIGAWARA
CPC classification number: A61B6/037 , A61B6/4258 , A61B6/4266
Abstract: A Positron Emission Tomography (PET) apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to determine a virtual detector region on the basis of a Positron Emission Tomography (PET) detector capable of detecting, in a real number coordinate system, a light emission position of an event occurring due to pair annihilation gamma rays becoming incident, a Line Of Response (LOR) defined based on the event detected by the PET detector, and the light emission position and is configured to perform a reconstruction process on the basis of the virtual detector region.
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5.发明公开公开(公告)号：US20230168395A1
公开(公告)日：2023-06-01
申请号：US18060006
申请日：2022-11-30
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Go KAWATA , Manabu TESHIGAWARA
CPC classification number: G01T1/22 , G01T1/2907
Abstract: A radiation detection device according to an embodiment includes a scintillator and a processing circuit. The processing circuit measures transferred energy when scintillation is caused after a gamma ray incident on a scintillator generates Cherenkov light and estimates a Cherenkov angle based on the transferred energy.
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Patent Agency Ranking
公开(公告)号：US20240177376A1
公开(公告)日：2024-05-30
申请号：US18519730
申请日：2023-11-27
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Manabu TESHIGAWARA
IPC: G06T11/00
CPC classification number: G06T11/006 , G06T2210/41 , G06T2211/40
Abstract: An image reconstruction method of an embodiment is to perform PET image reconstruction based on an objective function that solves a combinatorial optimization problem. The image reconstruction method of the embodiment includes a step of obtaining detection data and a step of performing PET image reconstruction by solving a combinatorial optimization problem based on the objective function into which the detection data is incorporated.
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7.发明公开公开(公告)号：US20230147531A1
公开(公告)日：2023-05-11
申请号：US17985246
申请日：2022-11-11
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Manabu TESHIGAWARA
IPC: G06T11/00
CPC classification number: G06T11/008 , G06T2211/40
Abstract: A medical image processing device according to an embodiment includes a processing circuit. The processing circuit is configured: to obtain an electron density function of an examined subject and information about a nuclide administered for the examined subject; to calculate a positron range kernel related to the examined subject, on the basis of the electron density function and the nuclide; and to reconstruct a Positron Emission Tomography (PET) image of the examined subject, on the basis of the positron range kernel.
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公开(公告)号：US20220395246A1
公开(公告)日：2022-12-15
申请号：US17345716
申请日：2021-06-11
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Wenyuan QI , Yujie LU , Ryo OKUDA , Evren ASMA , Manabu TESHIGAWARA , Jeffrey KOLTHAMMER
Abstract: The present disclosure is related to removing scatter from a SPECT scan by utilizing a radiative transfer equation (RTE) method. An attenuation map and emission map are acquired for generating scatter sources maps and scatter on detectors using the RTE method. The estimated scatter on detectors can be removed to produce an image of a SPECT scan with less scatter. Both first-order and multiple-order scatter can be estimated and removed. Additionally, scatter caused by multiple tracers can be determined and removed.
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公开(公告)号：US20190086557A1
公开(公告)日：2019-03-21
申请号：US16133796
申请日：2018-09-18
Applicant: Canon Medical Systems Corporation
Inventor： Manabu TESHIGAWARA
Abstract: A medical image diagnosis apparatus of an embodiment includes a self-radioactive scintillator constituted of a single crystal; plural photon detectors that are arranged at various positions in the scintillator, and that output an electrical signal according to a quantity of radiation radiated from the scintillator; and calibration circuitry configured to calibrate an electrical signal output from each of the photon detectors such that calculation results based on the electrical signal output from each of the photon detectors are same among the photon detectors.
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10.发明公开公开(公告)号：US20240115219A1
公开(公告)日：2024-04-11
申请号：US18477600
申请日：2023-09-29
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Go KAWATA , Manabu TESHIGAWARA
CPC classification number: A61B6/037 , A61B6/4241
Abstract: A nuclear medicine diagnostic device according to an embodiment includes processing circuitry. The processing circuitry obtains first photon-number information detected by a first detector; calculates, based on the first photon-number information, a first light emission probability model corresponding to the first detector; identifies, based on the first light emission probability model, a first timing at which the detection probability becomes equal to or greater than a predetermined threshold value; measures the detection timing of an event detected by the first detector; and corrects the detection timing based on the first timing.
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