公开(公告)号：US20220146610A1

公开(公告)日：2022-05-12

申请号：US17453679

申请日：2021-11-05

Applicant: Canon Medical Systems Corporation

Inventor： Hitoshi KANAZAWA ,  Seiji NOZAKI ,  Takehiro SHIBUYA

IPC: G01R33/3815 ,  G01R33/38 ,  G01R33/54 ,  H01F6/02 ,  H01F6/04

Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry is configured to calculate an allowable amount of heat input to a superconducting magnet, the allowable amount being allocated to each of a plurality of imagings scheduled during a target period. The processing circuitry is configured to determine an imaging condition based on the allowable amount in the each of the plurality of imagings.

公开(公告)号：US20200241098A1

公开(公告)日：2020-07-30

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 ,  G06T7/00 ,  A61B5/055 ,  A61B5/00

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：US20200049781A1

公开(公告)日：2020-02-13

申请号：US16533142

申请日：2019-08-06

Applicant: Canon Medical Systems Corporation

Inventor： Hitoshi KANAZAWA

IPC: G01R33/54 ,  G01R33/483 ,  G01R33/48

Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry sets an excitation pulse sequence that applies an excitation pulse including an inversion pulse between at least one set of sub pulses of a local excitation radio frequency pulse formed of a plurality of sub pulses, and applies a spoiler gradient magnetic field that disperses transverse magnetization while applying the inversion pulse. The processing circuitry controls execution of the excitation pulse sequence by applying the excitation pulse and the spoiler gradient magnetic field according to the excitation pulse sequence, and collects a magnetic resonance signal based on a data collecting sequence after execution of the excitation pulse sequence.

公开(公告)号：US20220146607A1

公开(公告)日：2022-05-12

申请号：US17519962

申请日：2021-11-05

Applicant: Canon Medical Systems Corporation

Inventor： Hitoshi KANAZAWA ,  Seiji NOZAKI ,  Takehiro SHIBUYA

IPC: G01R33/38 ,  G01R33/3815

Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry calculates a limit imaging condition based on one or more imaging parameters for determining an imaging condition, the limit imaging condition being an allowable limit relating to heat input to a superconducting magnet. The processing circuitry limits an input range of an imaging parameter input by an operator based on the limit imaging condition.

公开(公告)号：US20230324480A1

公开(公告)日：2023-10-12

申请号：US18328623

申请日：2023-06-02

Applicant: Canon Medical Systems Corporation

Inventor： Hitoshi KANAZAWA ,  Seiji NOZAKI ,  Takehiro SHIBUYA

IPC: H01F6/04 ,  G01R33/3815 ,  H01F6/02 ,  G01R33/54 ,  G01R33/38

CPC classification number: G01R33/3815 ,  G01R33/3804 ,  G01R33/543 ,  H01F6/02 ,  H01F6/04

Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry is configured to calculate an allowable amount of heat input to a superconducting magnet, the allowable amount being allocated to each of a plurality of imagings scheduled during a target period. The processing circuitry is configured to determine an imaging condition based on the allowable amount in the each of the plurality of imagings.

公开(公告)号：US20220260659A1

公开(公告)日：2022-08-18

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

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：US20180279878A1

公开(公告)日：2018-10-04

申请号：US15943843

申请日：2018-04-03

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Ei NOMURA ,  Hitoshi KANAZAWA

IPC: A61B5/00 ,  A61B5/055 ,  A61B5/026 ,  G01R33/563

Abstract: In one embodiment, an MRI apparatus is configured to be connected with a pressure device that externally pressures a blood vessel of an object, and includes a scanner configured to perform imaging on the object and processing circuitry. The processing circuitry controls the pressure device in such a manner that ischemia and reperfusion are caused with respect to the object, determines a start timing of the imaging on the basis of a state of pressurization caused by the pressure device, causes the scanner to perform the imaging on the object in accordance with the start timing, and generates an image by using data acquired in the imaging.

公开(公告)号：US20230116931A1

公开(公告)日：2023-04-20

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: 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.