公开(公告)号：US20210121092A1

公开(公告)日：2021-04-29

申请号：US17072713

申请日：2020-10-16

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Sho KAWAJIRI ,  Masashi HORI

IPC: A61B5/055 ,  G01R33/54 ,  G01R33/28

Abstract: A magnetic resonance imaging system according to an embodiment includes a magnetic resonance imaging device including a couch with a couchtop on which a subject is placed, and an optical photographing device. The optical photographing device acquires an image including the couch. The magnetic resonance imaging device includes a processing circuitry that performs display of information expressing a position of a first RF coil disposed under or inside the couchtop on the basis of the image acquired by the optical photographing device so that a positional relation with the subject placed on the couchtop is displayed.

公开(公告)号：US20190137581A1

公开(公告)日：2019-05-09

申请号：US16183055

申请日：2018-11-07

Applicant: Canon Medical Systems Corporation

Inventor： Sho KAWAJIRI ,  Motohiro MIURA ,  Masashi HORI

IPC: G01R33/385 ,  G01R33/48 ,  G01R33/36 ,  G01R33/54

Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes amplifiers, processing circuitry, and a power supplier. The amplifiers supplies power for each of a plurality of channels of gradient coils. The processing circuitry obtains, for each of the channels, a voltage gradient that represents a temporal change of a power supply voltage for supplying a current to the amplifiers. The power supplier supplies the power to an amplifier corresponding to a specific one of the channels on a priority basis in accordance with the voltage gradient.