目的 利用多排螺旋CT(MDCT)测 量甘肃地区健康成人门静脉及腹主动脉 直径，建立正常成年人门静脉及腹主动 脉直径的数值标准。方法 回顾性分析 2014年2月至2015年4月在兰州大学第一 医院行上腹部CT增强检查的正常成年人 300例，按年龄分组：18-39岁(A组)， 40-59岁(B组)，≥60岁(C组)；各组均 包括男50例，女50例。扫描图像经工作 站3D重建后进行测量，所得结果利用 SPSS22.0统计分析。结果 LPV在A组与C组 间有明显差异(P＜0.05)，MPV在A组与C 组、B组与C组间有明显差异(P＜0.05)， AA、R3在任一年龄组间均有明显差异(P ＜0.01)，LPV、RPV、MPV、AA在性别间 有明显差异(P＜0.05)。结论 门静脉及 腹主动脉管径在年龄及性别间差异有统 计学意义，本实验为甘肃地区成年人肝 脏及门静脉相关疾病的早期诊断提供了 客观的影像学量化标准。

Objective To measure the diameters of the portal vein and abdominal aorta of the normal adult in Gansu Province by Multi-detector Row Spiral CT, and determine the normal CT scale of portal vein and abdominal aorta of adult. Methods Retrospective analysis 300 normal cases that were performed enhanced abdomen CT in the First Hospital of Lanzhou University from February 2014 to April 2015. They were equally assigned to 3 groups according to their age (A group:18—39years,B group:40-59 years,C group:be equal or greater than 60 years;50 females and 50 males in each group). Measurements were done on 3D reconstruction image with precise landmarks, and these data were statistically analyzed by SPSS22.0. Results There were significant differences in the diameters of the left portal vein between group A and group C(P<0.05), and the diameters of the main portal vein were significantly diffrent between group A and group C, group B and group C(P<0.05), and the diameters of abdominal aorta and R3 differed significantly among each group(P<0.01). The diameters of left portal vein,right portal vein,main portal vein, and abdominal aorta differed significantly among the genders(P<0.05). Conclusion The diameters of main portal vein and abdominal aorta differed significantly among the age and genders. Imaging standard is provided for Gansu Province adult in early diagnosis of liver or portal vein disease．