Title:
SHIMMING CONTROL METHOD, DEVICE, AND SYSTEM FOR MAGNETIC RESONANCE IMAGING
Document Type and Number:
WIPO Patent Application WO/2021/109847
Kind Code:
A1
Abstract:
A shimming control method, device, and system for magnetic resonance imaging. The shimming control method for magnetic resonance imaging comprises: acquiring an actual magnetic field distribution of a magnetic resonance imaging region (S802); determining a spherical harmonic function expression of the actual magnetic field distribution (S804); determining, according to the spherical harmonic function expression of the actual magnetic field distribution and a kernel function of a coil array (102), a target current value of each basic coil corresponding to the imaging region in the coil array (102), wherein the coil array (102) is provided in a magnetic resonance apparatus and is used to perform shimming on the magnetic resonance, and the kernel function of the coil array (102) is determined according to a magnetic field vector distribution of each basic coil in the coil array (102) (S806); and performing, on the basis of the target current value, current control on each basic coil corresponding to the imaging region so as to implement shimming (S808). By using the shimming control method for magnetic resonance imaging, the target current value determined according to the spherical harmonic function expression of the actual magnetic field distribution and the kernel function of the coil array (102) is applied to the basic coil corresponding to the imaging region in the coil array (102) so as to implement shimming, such that a high-order shimming requirement is met without increasing the number of coils and the space thereof.
Inventors:
ZHAO HUAWEI (CN)
SHI YONGLING (CN)
SHI YONGLING (CN)
Application Number:
PCT/CN2020/128976
Publication Date:
June 10, 2021
Filing Date:
November 16, 2020
Export Citation:
Assignee:
HUNAN MAGTECH MEDICAL TECH CO LTD (CN)
International Classes:
G01R33/381
Foreign References:
| CN110927642A | 2020-03-27 | |||
| US20190246939A1 | 2019-08-15 | |||
| CN107110922A | 2017-08-29 | |||
| CN109856575A | 2019-06-07 | |||
| CN102356330A | 2012-02-15 | |||
| CN103442635A | 2013-12-11 | |||
| CN110308411A | 2019-10-08 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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