螺旋CT扫描和非螺旋CT扫描最大的不同是（）The biggest difference between helical CT scan and non-helical CT scan is

A.曝光参数Exposure parameters

B.被检者体位Subject position

C.模数转换方式methods of A/D conversion

D.数据采集方式methods of data acquisition

E.图像的后处理Post processing of images

正确答案：数据采集方式methods of data acquisition