Formation Mechanism of magnetic resonance equipment artifacts and maintenance of fault cases
10.3969/j.issn.1672-8270.2024.07.036
- VernacularTitle:磁共振成像设备伪影的形成机制及故障案例解决方案
- Author:
Sai JING
1
;
Yan WANG
;
Xiaochen ZHAO
;
Pengfei WANG
Author Information
1. 中国人民解放军联勤保障部队第960医院医学工程科 济南 250012
- Keywords:
Magnetic resonance imaging(MRI);
Image artifacts;
Formation mechanism;
Fault analysis
- From:
China Medical Equipment
2024;21(7):192-195
- CountryChina
- Language:Chinese
-
Abstract:
To explore the formation mechanism of static magnetic field artifacts,motion artifacts,chemical shift artifacts and folding artifacts in magnetic resonance imaging(MRI)equipment,and to propose for different artifact failures and common faults using multiple maintenance methods.The artifacts were mainly related to the anomaly of the magnetic field strength,the unoptimized sequence,and the physical limits.The occurrence of static magnetic field artifacts was reduced by using plane avoidance sequence excitation technology,the motion artifacts were eliminated by propeller imaging technology,the occurrence rate of motion artifacts was reduced by reducing hydrogen proton signal interference,and the fold artifacts were suppressed by expanding the scanning field of view,in order to obtain a good resonance image effect and reduce the probability of MRI artifacts,improve the accuracy of medical detection.
