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目的了解当前南京市医用诊断X射线机的影像质量控制现状,推进影像质量控制工作。方法按照国家标准和卫生行业标准的有关内容进行检测和评价。结果公立市级及市级以上医院、民营综合医院影像质量控制检测的合格率均为100%,优于公立区级医院与社区卫生服务中心、民营专科医院、其他厂矿医院及体检中心的96.6%、93.2%、98.4%;X射线摄片机管电压指示偏离、光野与照射野四边的最大偏离合格率分别为97.8%、99.4%,其余指标合格率均为100%;X射线透视机有用线束半值层合格率为99.1%,其余指标合格率均为100%;CR质控指标IP响应均匀性及一致性、IP响应线性合格率分别为75%、25%,其余指标合格率均为100%;CT、乳腺X射线机质控指标合格率均为100%;牙科X射线机输出量重复性、曝光时间指示偏离合格率为98.5%,其余指标合格率均为100%。结论南京市医用诊断X射线机的总体运行状况良好,但是部分社区卫生服务中心等基层医疗单位仍存在一定问题,影像质量控制工作仍需加强。
Objective To understand the current situation of image quality control of medical diagnostic X-ray machines in Nanjing and to promote the image quality control. Methods According to the national standards and health industry standards for testing and evaluation. Results The pass rate of image quality control testing of public hospitals at municipal level, municipal hospitals and private general hospitals was 100%, which was better than 96.6% of the public hospitals and community health centers, private specialized hospitals, other factories and hospitals and physical examination centers, , 93.2% and 98.4%, respectively; the deviation of tube voltage of X-ray tube was 97.8% and 99.4% respectively, and the pass rates of other indexes were all 100%; the useful wire harness of X-ray fluoroscopy The pass rate of half value layer is 99.1%, the pass rate of other indexes is 100%; The CR quality control index IP response is uniform and consistent, the linear pass rate of IP response is respectively 75% and 25%, and the remaining pass rate is 100 %; CT, mammography quality control indicators were 100% pass rate; dental X-ray machine output repeatability, deviation from the exposure time indication of 98.5%, the remaining indicators pass rate of 100%. Conclusions The overall operation status of medical diagnostic X-ray machine in Nanjing is good, but some community health service centers and other grass-roots medical units still have some problems, and the quality control of the medical images still needs to be strengthened.