Sonographic examinations of the pancreas were performed by sagittal scanning at the epigastrium ; the long axis and short axis of the oval cross - sections of both the pancreatic head and body were measured 检查测量的方式是在上腹部作纵向扫描，可以分别得到胰脏头部与体部之圆形纵切面造影，进而分别测量胰脏头部与体的长轴与短轴，一共为4个胰脏因数。
