公开(公告)号：US20180120399A1

公开(公告)日：2018-05-03

申请号：US15799025

申请日：2017-10-31

Applicant: General Electric Company

Inventor： Yongchuan Lai ,  Xiaoli Zhao ,  Weiwei Zhang ,  Stephen Joseph Garnier ,  Lisha Nie ,  Pengfei Lu ,  Hongbin Wang

IPC: G01R33/56 ,  G01R33/36 ,  G01R33/34

CPC classification number: G01R33/56 ,  G01R33/34046 ,  G01R33/3415 ,  G01R33/36 ,  G01R33/5659

Abstract: The present invention provides a method and apparatus for correcting a uniformity of a magnetic resonance image, the method comprising: acquiring a first uniformity enhancement image by a phased-array uniformity enhancement method; and dividing the first uniformity enhancement image by a receiving sensitivity distribution value of a body coil in a magnetic resonance imaging device, so as to acquire a second uniformity enhancement image. The method may further comprise: dividing the second uniformity enhancement image by a spatial signal distribution value resulting from a field strength distribution of a transmitting radio-frequency field, so as to acquire a third uniformity enhancement image.

公开(公告)号：US20190004135A1

公开(公告)日：2019-01-03

申请号：US16020656

申请日：2018-06-27

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Jia Guo ,  Yongchuan Lai ,  Tongzhou Wang ,  Hongbin Wang

IPC: G01R33/54 ,  G01R33/48 ,  G01R33/00

Abstract: Methods and apparatuses for processing MR signal are disclosed herein. An exemplary method comprises: when acquired K-space signals are amplified, assigning a first amplification gain to signals within a first signal region in the K space, and assigning a second amplification gain to signals within a second signal region in the K space.