Abstract：Objective To eliminate or suppress the artifacts by analyzing the common image artifacts caused by the main magnet,
radio frequency (RF), coil, gradient and other hardware of MR system, and discussing the causes and treatment countermeasures.
Methods A total of 11 cases of artifacts encountered by MR equipment in our hospital in recent years were collected, including 1
case of artifacts caused by main magnetic, 3 cases caused by RF, 4 cases caused by coil, 2 cases caused by gradient and 1 case caused
by other hardware. The interference artifact and gradient linear variation artifact were analyzed in detail, the characteristics and
causes of artifacts caused by MR hardware were analyzed, and corresponding solutions were formulated. Results By analyzing the
characteristics of MR image artifacts, the sources of artifacts were found. Among the 11 cases of artifacts, 4 artifacts were eliminated
after replacing the faulty components, 5 artifacts were eliminated or mitigated by software calibration, and 2 artifacts were eliminated
by removing the interference source. The image artifacts were eliminated or reduced. Conclusion The artifacts can be suppressed
or eliminated by analyzing the characteristics and causes of artifacts, judging the source and formulating corresponding corrective
measures, which also provides reference for equipment troubleshooting.
袁保锋，李郑，何玲，焦志云. MR硬件相关伪影常见原因分析及对策[J]. 中国医疗设备, 2022, 37(3): 178-181.
YUAN Baofeng, LI Zheng, HE Ling, JIAO Zhiyun. Reason Analysis and Countermeasures of Artifacts Caused by MR Hardware. China Medical Devices, 2022, 37(3): 178-181.
