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    DATA PROCESSING DEVICE, MAGNETIC RESONANCE IMAGING APPARATUS, AND DATA PROCESSING METHOD
    1.
    发明申请
    DATA PROCESSING DEVICE, MAGNETIC RESONANCE IMAGING APPARATUS, AND DATA PROCESSING METHOD 有权

    公开(公告)号：US20230130481A1

    公开(公告)日：2023-04-27

    申请号：US18048503

    申请日：2022-10-21

    Applicant: CANON MEDICAL SYSTEMS CORPORATION

    Inventor： Hideaki Kutsuna

    IPC: G01R33/56 ,  G06N3/045

    Abstract: A data processing device according to an embodiment includes a processing circuit. The processing circuit performs data processing using a learned model with a neural network including a division processing layer that divides input complex first vector data by complex second vector data containing features of the first vector data, a nonlinear layer that is disposed in the subsequent stage of the division processing layer and that performs a nonlinear operation, and a multiplication processing layer that is disposed in the subsequent stage of the nonlinear layer and that multiplies the input data by the second vector data.

    Image generating apparatus, image generation method, and nontransitory computer-readable storage medium storing therein image generation program
    3.
    发明授权
    Image generating apparatus, image generation method, and nontransitory computer-readable storage medium storing therein image generation program 有权

    公开(公告)号：US11896361B2

    公开(公告)日：2024-02-13

    申请号：US17496199

    申请日：2021-10-07

    Applicant: CANON MEDICAL SYSTEMS CORPORATION

    Inventor： Hideaki Kutsuna ,  Hidenori Takeshima

    IPC: A61B5/055 ,  G01R33/561

    CPC classification number: A61B5/055 ,  G01R33/5611

    Abstract: An image generating apparatus according to the embodiment includes processing circuitry. The processing circuitry acquires MR data acquired in read-out directions including a first read-out direction and a second read-out direction intersecting the first read-out direction, filter sensitivity distributions corresponding to the read-out directions and indicating distributions of sensitivity of a low-pass filter, and coil sensitivity distributions corresponding to coil elements used to acquire the MR data. The processing circuitry generates synthesis sensitivity distributions for the respective read-out directions by synthesizing the filter sensitivity distributions and the coil sensitivity distributions for the respective read-out directions. The processing circuitry generates an MR image based on the synthesis sensitivity distributions and MR data.

    Image generating apparatus, image generating method, and non-volatile computer-readable storage medium storing therein image generating program
    4.
    发明授权
    Image generating apparatus, image generating method, and non-volatile computer-readable storage medium storing therein image generating program 有权

    公开(公告)号：US11543480B2

    公开(公告)日：2023-01-03

    申请号：US17391758

    申请日：2021-08-02

    Applicant: CANON MEDICAL SYSTEMS CORPORATION

    Inventor： Hideaki Kutsuna ,  Masahito Nambu

    IPC: G01R33/561 ,  G01R33/36 ,  G01R33/48

    Abstract: An image generating apparatus according to an embodiment includes processing circuitry. The processing circuitry obtains a coil sensitivity distribution indicating a sensitivity distribution of a reception coil used for an imaging process performed on an examined subject and magnetic resonance data acquired from the imaging process that is non-Cartesian and performed in a k-space. The processing circuitry performs, on the basis of the coil sensitivity distribution, registration between the coil sensitivity distribution and a gridding sensitivity distribution indicating a distribution of gridding sensitivity related to arranging the magnetic resonance data in the k-space. The processing circuitry generates a magnetic resonance image on the basis of a result of the registration, magnetic resonance data, coil sensitivity distribution, and gridding sensitivity distribution.

    MRI apparatus and MRI method
    6.
    发明授权
    MRI apparatus and MRI method 有权

    公开(公告)号：US11194003B2

    公开(公告)日：2021-12-07

    申请号：US16804221

    申请日：2020-02-28

    Applicant: Canon Medical Systems Corporation

    Inventor： Hideaki Kutsuna ,  Hidenori Takeshima

    IPC: G01R33/565 ,  G01R33/385 ,  G01R33/48

    Abstract: In one embodiment, an MRI apparatus includes a scanner and processing circuitry. The scanner includes at least two gradient coils. The processing circuitry is configured to cause the scanner to acquire k-space data for correction in a band-shaped two-dimensional k-space along a readout direction, or in a columnar three-dimensional k-space along a readout direction, while changing rotation angles, wherein each of the rotation angles corresponds to the readout direction, generate correction data for correcting an error due to a gradient magnetic field generated by the gradient coils, by using the acquired k-space data for correction, cause the scanner to acquire k-space data for reconstruction, based on a radial acquisition method, while correcting the gradient magnetic field by using the correction data, and generate an image by reconstructing the acquired k-space data for reconstruction.

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