Abstract：Objective To introduce several kinds of image artifacts caused by the fault of CT data acquisition system (DAS), analyze
the causes and handling methods. Methods A total of 12 cases of CT DAS fault artifacts in our hospital in recent years were
collected, among which 1 case was caused by detector unit fault, 4 cases of detector channel failure, 2 case of A/D converter, 1 case
caused by foreign matters on the detector, 1 case caused by calibration detector fault artifact, 2 cases caused by data transmission path
fault, and 1 case by another factor. The characteristics and causes of several artifacts were analyzed, and the corresponding solutions
were adopted. Results Through the analysis of the characteristics of the artifact, the source of corresponding DAS fault was found
and the artifact was eliminated. Conclusion The artifact can be suppressed or eliminated by analyzing the characteristics and causes
of the artifact in CT acquisition system, judging the source of the artifact and making corresponding corrective measures.
袁保锋，陈晗梅，李郑，张正东. CT数据采集系统故障伪影常见原因分析及处理[J]. 中国医疗设备, 2021, 36(1): 175-178.
YUAN Baofeng, CHEN Hanmei, LI Zheng, ZHANG Zhengdong. Common Causes Analysis and Trouble-shooting of Fault Artifacts in CT Data Acquisition System. China Medical Devices, 2021, 36(1): 175-178.
