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1.发明授权公开(公告)号：US11965948B2
公开(公告)日：2024-04-23
申请号：US18084613
申请日：2022-12-20
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Yuichi Yamashita , Kazuto Nakabayashi , Hitoshi Kanazawa , Kazuya Okamoto , Hiroshi Takai , Nobuyuki Konuma , Kensuke Shinoda
CPC classification number: G01R33/5608 , G06T5/002 , G06T5/50 , G06T2207/10088 , G06T2207/20212
Abstract: According to one embodiment, a medical information processing apparatus includes processing circuitry configured to derive an index value with respect to noise included in data associated with magnetic resonance signals collected by each of a plurality of reception coils, adjust a degree to which noise is removed from the data associated with the magnetic resonance signals based on the derived index value, remove noise from the data associated with the magnetic resonance signals based on the adjusted degree, and perform compositing of the data associated with the magnetic resonance signals from which noise has been removed.
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公开(公告)号：US11035917B2
公开(公告)日：2021-06-15
申请号：US16200075
申请日：2018-11-26
Applicant: Canon Medical Systems Corporation
Inventor： Kazuya Okamoto
IPC: G01R33/36
Abstract: According to one embodiment, an MRI apparatus includes a power transmitting unit a signal receiving unit and an image reconstruction unit. The power transmitting unit wirelessly transmits electric power to an RF coil device by magnetically coupled resonant type wireless power transfer. The signal receiving unit wirelessly receives a digitized nuclear magnetic resonance signal wirelessly transmitted from the RF coil device. The image reconstruction unit obtains a nuclear magnetic resonance signal received by the signal receiving unit, and reconstructs image data of an object on the basis of the nuclear magnetic resonance signal.
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公开(公告)号：US10884082B2
公开(公告)日：2021-01-05
申请号：US16451059
申请日：2019-06-25
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Kazuya Okamoto
IPC: G01R33/36 , G01R33/3415
Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a receiver array coil structured with a plurality of receiver coils. Each of the receiver coils included in the receiver array coil includes a coil element, a first tuning element configured to tune a tunable frequency of the receiver coil to a desired frequency, and a series circuit including a switching element and a second tuning element and being connected in parallel with the first tuning element. The switching element is configured to disconnect the first tuning element and the second tuning element from each other at the time of transmitting and is configured to arrange the first tuning element and the second tuning element to be electrically conductive with each other at the time of receiving. At least two receiver coils positioned adjacent to each other among the plurality of receiver coils are decoupled from each other.
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公开(公告)号：US11815581B2
公开(公告)日：2023-11-14
申请号：US17734351
申请日：2022-05-02
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Kensuke Shinoda , Kazuto Nakabayashi , Hitoshi Kanazawa , Kazuya Okamoto , Hiroshi Takai , Nobuyuki Konuma , Yuichi Yamashita
CPC classification number: G01R33/5608 , A61B5/055 , A61B5/7203 , G06T5/002 , G06T5/50 , G06T7/0012 , G06T2207/10088 , G06T2207/30004
Abstract: A medical image processing apparatus of embodiments includes processing circuitry. The processing circuitry is configured to acquire a data and a g-factor map. The data is generated as a result of a reception by an RF coil. The processing circuitry is configured to determine strength of denoise performed on the data on the basis of the g-factor map and perform the denoise on the data.
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公开(公告)号：US20220183630A1
公开(公告)日：2022-06-16
申请号：US17643047
申请日：2021-12-07
Applicant: CANON KABUSHIKI KAISHA , CANON MEDICAL SYSTEMS CORPORATION
Inventor： Ryuichi Nanaumi , Kazuya Okamoto , Takafumi Ohishi
IPC: A61B5/00 , A61B5/055 , G01R33/567
Abstract: A subject information acquisition apparatus, comprises: a signal generation unit configured to generate a high-frequency signal corresponding to each of the frequencies; an acquisition unit configured to acquire a plurality of detection signals based on at least one of a reflection signal and a transmission signal; a signal selection unit configured to select at least one detection signal from the plurality of detection signals based on an index value of the plurality of detection signals; a coupling amount detecting unit configured to detect a coupling amount of near-field coupling due to an electric field between the antenna and the subject based on a detection signal; and a displacement detecting unit configured to generate a displacement signal indicating a displacement of the subject based on the coupling amount.
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Patent Agency Ranking
公开(公告)号：US11035923B2
公开(公告)日：2021-06-15
申请号：US16686264
申请日：2019-11-18
Applicant: Canon Medical Systems Corporation
Inventor： Kazuya Okamoto
IPC: G01R33/567
Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a monitoring coil, a measuring device, and processing circuitry. The monitoring coil continuously transmits to a subject an electromagnetic wave having a monitoring frequency, and without touching the subject. The measuring device measures a change in the impedance related to the monitoring coil over time to thereby generate a biosignal of the subject. The processing circuitry is configured to determine the monitoring frequency that is higher than a frequency of a high-frequency magnetic field based on the information of the subject, and to controls a sequence related to the imaging based on the biosignal.
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7.发明授权公开(公告)号：US11536790B2
公开(公告)日：2022-12-27
申请号：US16720356
申请日：2019-12-19
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Yuichi Yamashita , Kazuto Nakabayashi , Hitoshi Kanazawa , Kazuya Okamoto , Hiroshi Takai , Nobuyuki Konuma , Kensuke Shinoda
Abstract: According to one embodiment, a medical information processing apparatus includes processing circuitry configured to derive an index value with respect to noise included in data associated with magnetic resonance signals collected by each of a plurality of reception coils, adjust a degree to which noise is removed from the data associated with the magnetic resonance signals based on the derived index value, remove noise from the data associated with the magnetic resonance signals based on the adjusted degree, and perform compositing of the data associated with the magnetic resonance signals from which noise has been removed.
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公开(公告)号：US11415656B2
公开(公告)日：2022-08-16
申请号：US16774116
申请日：2020-01-28
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Kensuke Shinoda , Kazuto Nakabayashi , Hitoshi Kanazawa , Kazuya Okamoto , Hiroshi Takai , Nobuyuki Konuma , Yuichi Yamashita
Abstract: A medical image processing apparatus of embodiments includes processing circuitry. The processing circuitry is configured to acquire a data and a g-factor map. The data is generated as a result of a reception by an RF coil. The processing circuitry is configured to determine strength of denoise performed on the data on the basis of the g-factor map and perform the denoise on the data.
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9.发明授权公开(公告)号：US12016704B2
公开(公告)日：2024-06-25
申请号：US17701032
申请日：2022-03-22
Applicant: CANON MEDICAL SYSTEMS CORPORATION
Inventor： Mark Spring , Yoshinori Hamamura , Kazuya Okamoto , Sojiyuuro Kato , Kazuyuki Soejima
CPC classification number: A61B5/704 , G01R33/36 , H02J7/0068 , H02J50/12 , H02J50/402
Abstract: A patient couch for use in a medical imaging system that includes a gantry, a power supply unit and a driving unit for positioning the patient couch with respect to the gantry. The patient couch includes at least a first connector for supplying a wireless coil (e.g., a radio frequency (RF) coil for an MRI imaging apparatus) with power. The patient couch is detachably connected to the gantry. The power supply is configured to supply the first connector with power and an optional clock synchronization signal.
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公开(公告)号：US12186105B2
公开(公告)日：2025-01-07
申请号：US17643047
申请日：2021-12-07
Applicant: CANON KABUSHIKI KAISHA , CANON MEDICAL SYSTEMS CORPORATION
Inventor： Ryuichi Nanaumi , Kazuya Okamoto , Takafumi Ohishi
IPC: A61B5/00 , A61B5/055 , G01R33/567
Abstract: A subject information acquisition apparatus, comprises: a signal generation unit configured to generate a high-frequency signal corresponding to each of the frequencies; an acquisition unit configured to acquire a plurality of detection signals based on at least one of a reflection signal and a transmission signal; a signal selection unit configured to select at least one detection signal from the plurality of detection signals based on an index value of the plurality of detection signals; a coupling amount detecting unit configured to detect a coupling amount of near-field coupling due to an electric field between the antenna and the subject based on a detection signal; and a displacement detecting unit configured to generate a displacement signal indicating a displacement of the subject based on the coupling amount.
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