公开(公告)号：US20210088611A1

公开(公告)日：2021-03-25

申请号：US17032588

申请日：2020-09-25

Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY

Inventor： Ye LI ,  Qiaoyan CHEN ,  Jo LEE ,  Chao LUO ,  Jianhong WEN ,  Chao ZOU ,  Xin LIU

IPC: G01R33/3875 ,  G01R33/44 ,  G01R33/54 ,  A61B5/055 ,  G01R33/48

Abstract: A local shimming system for magnetic resonance imaging and the method thereof, wherein the shimming method comprises the following steps: collecting B0 field map information using two-dimensional gradient echo (301); calculating and evaluating the homogeneity of B0 (302); optimizing the current of each channel shim coil (303); determining whether the minimum standard deviation value of Δf is obtained (304); outputting an optimal current combination values and setting an optimum current value corresponding to each channel of the shim coil on the current control software (305); and testing and evaluating the homogeneity of B0 to achieve the shimming goal (306).