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

IPC: G01V3/00 ,  G01R33/56 ,  G06T5/00 ,  G06T5/50

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.

公开(公告)号：US11768261B2

公开(公告)日：2023-09-26

申请号：US17661423

申请日：2022-04-29

Applicant: Canon Medical Systems Corporation

Inventor： Hiroyuki Tsujino ,  Kazuto Nakabayashi

IPC: G01R33/34 ,  G01R33/3815

CPC classification number: G01R33/3403 ,  G01R33/34023 ,  G01R33/3815

Abstract: According to one embodiment, a magnetic resonance imaging system includes a first imaging apparatus, a first cooling system, a second imaging apparatus, a second cooling system and a cooling control device. The first imaging apparatus includes a first magnet configured to generate a static magnetic field. The first cooling system is configured to cool the first magnet. The second imaging apparatus includes a second magnet configured to generate a static magnetic field. The second cooling system is configured to cool the second magnet. The cooling control device is configured to switch a cooling target of each of the first cooling system and the second cooling system.

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

IPC: G01V3/00 ,  G01R33/56 ,  G06T5/00 ,  G06T5/50

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.

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

IPC: G01R33/56 ,  G06T5/00 ,  G06T5/50 ,  A61B5/055 ,  A61B5/00 ,  G06T7/00

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.

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

IPC: G01R33/56 ,  G06T5/00 ,  G06T5/50 ,  A61B5/055 ,  A61B5/00 ,  G06T7/00

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.

公开(公告)号：US11747417B2

公开(公告)日：2023-09-05

申请号：US17451684

申请日：2021-10-21

Applicant: Canon Medical Systems Corporation

Inventor： Yohei Hashizume ,  Tomoyuki Yoshida ,  Kazuto Nakabayashi

IPC: G01R33/3815 ,  H02J9/06 ,  H01F6/04 ,  G01R33/38

CPC classification number: G01R33/3815 ,  G01R33/3804 ,  H01F6/04 ,  H02J9/06

Abstract: According to one embodiment, a magnetic resonance imaging system includes a first power supply, one or more second power supplies and control circuitry. The first power supply supplies power to a magnetic resonance imaging apparatus at a time of power outage of a commercial power supply electrically connected to the magnetic resonance imaging apparatus. The second power supplies supply the power to the magnetic resonance imaging apparatus. The control circuitry determines a state of feeding from the first power supply and the second power supplies to the magnetic resonance imaging apparatus, and performs control of power consumption in the magnetic resonance imaging apparatus based on a determination result of the state of feeding.

公开(公告)号：US11662406B2

公开(公告)日：2023-05-30

申请号：US17519944

申请日：2021-11-05

Applicant: Canon Medical Systems Corporation

Inventor： Kazuto Nakabayashi ,  Takehiro Shibuya

IPC: G01R33/3815 ,  H01F6/02 ,  H01F6/04

CPC classification number: G01R33/3815 ,  H01F6/02 ,  H01F6/04

Abstract: According to one embodiment, a MRI apparatus determines a first time during which a subsidiary power supply is capable of supplying power to a cooling device based on a capacity of the subsidiary power supply when power outage of a main power supply occurs, and determines a second time needed to demagnetize a superconducting magnet based on an excitation current of the superconducting magnet and a temperature of the superconducting magnet. The MRI apparatus determines starts ramp-down of the superconducting magnet after a third time based on the first time and the second time has elapsed from initiation of power outage of the main power supply.