公开(公告)号：US20180284212A1

公开(公告)日：2018-10-04

申请号：US15940188

申请日：2018-03-29

Applicant: Canon Medical Systems Corporation

Inventor： Daiki TAMADA ,  Takahiro TAMURA

IPC: G01R33/565 ,  G01R33/48

CPC classification number: G01R33/56572 ,  G01R33/4824

Abstract: According to one embodiment, an MRI apparatus includes sequence control circuitry that performs first scanning and second scanning along mutually opposite radial directions in k-space, crossing over a k-space origin, and performs third scanning, and processing circuitry that generates first and second projection images by respectively applying a one-dimensional Fourier transform for the directions to first and second MR signals respectively acquired by the first and second scanning, determines correction coefficients related to transient response characteristics of a readout gradient magnetic field by a calculating process to reduce a difference between the first and second projection images, and generates a corrected image in which the transient response characteristics are corrected using the correction coefficients and MR signals acquired by the third scanning.