摘要
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.
作者
黄锦锋
Huang Jinfeng(Shenyang market supervision service and administrative law enforcement center(shenyang inspection and testing center),Shenyang,Liaoning 110179,China)
出处
《信息记录材料》
2019年第4期228-229,共2页
Information Recording Materials
关键词
剂量指数
层厚
MTF函数
Dose index
Layer thickness
The MTF function