摘要
目的分析CT设备质量检测中的问题及质控措施。方法检测40台CT设备定位光精度、床位移精度、空间分辨率、头部剂量指数、低对比度分辨率、水的CT值、CT值均匀性、噪声、层厚偏差情况。结果 CT机性能各项指标合格率均超过90%,铅当量不足、无屏蔽防护、结合处密封不严是导致泄漏的主要原因。结论必须对CT设备机房设施进行改进,对检测质量进行完善。
Objective To analyze the problems in quality inspection of CT equipment and quality control measures. Methods The positioning accuracy, bed displacement accuracy, spatial resolution, head dose index, low contrast resolution, water CT value, CT value uniformity, noise, and thickness deviation of 40 CT equipments were detected. Results The performance index of CT qualified rate of more than 90%, the lead equivalent, without shielding, untight sealing were the main cause of leakage. Conclusion It is necessary to improve the facilities of CT equipment and improve the quality of inspection.
出处
《中国卫生标准管理》
2017年第14期124-126,共3页
China Health Standard Management
关键词
CT设备
质量检测
质控措施
CT equipment
quality inspection
quality control measures
