浅析JJG961-2017 CT新检定规程

A brief analysis of the new verification procedures of jjg961-2017 CT

随着医疗设备的不断发展,旧CT规程已经无法满足实际检定过程中的需要,新版检定规程对原检定项目如剂量指数、层厚、MTF函数进行了修订,尤其是在剂量测量方面的改动比较大,对标称射线宽度大于40mm和60mm的CT剂量测量上提出了新要求。

With the continuous development of medical equipment,the old rules of CT have already can’t satisfy the need in the process of actual verification,the new verification regulation of the original project such as dose index and the layer thickness,the MTF was revised,especially in the area of dose measurement of change is bigger,the nominal width of ray more than 40 mm and 60 mm CT dose measurement on the new requirements are put forward.