公开(公告)号：US11035922B2

公开(公告)日：2021-06-15

申请号：US16533080

申请日：2019-08-06

Applicant: Canon Medical Systems Corporation

Inventor： Shuhei Nitta ,  Naho Imamura ,  Takahiro Ohmure ,  Hiroshi Takai ,  Nobuyasu Ichinose ,  Yoshimori Kassai

IPC: G01R33/565 ,  G01R33/561 ,  G01R33/421 ,  G01R33/56 ,  G01R33/563

Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry calculates a static magnetic field correction amount based on a static magnetic field distribution of a first imaging range narrower than a second imaging range. The processing circuitry collects a magnetic resonance (MR) image of the second imaging range under a static magnetic field which is corrected based on the static magnetic field correction amount. The processing circuitry corrects distortion of the collected MR image.

公开(公告)号：US10908242B2

公开(公告)日：2021-02-02

申请号：US16391391

申请日：2019-04-23

Applicant: Canon Medical Systems Corporation

Inventor： Shuhei Nitta ,  Nobuyasu Ichinose ,  Hiroshi Takai ,  Naho Imamura

IPC: G01R33/3875 ,  G01R33/48 ,  G01R33/565 ,  G01R33/483

Abstract: A magnetic resonance imaging apparatus includes an interface, processing circuitry, and imaging control circuitry. The interface inputs, to a locator image, a position-indicating region indicating a position in a displayed cross section. The processing circuitry determines a collection direction relating to multi-slice imaging based on a static magnetic field distribution relating to the position-indicating region and the position-indicating region. The imaging control circuitry performs the multi-slice imaging in the collection direction to a plurality of slices in an imaging region which includes at least the position-indicating region.