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目的：多排螺旋CT下观察和测量不同年龄段及不同性别正常成人胰钩突角的大小，确定钩突角的正常范围，为影像诊断胰头占位性病变提供依据。方法回顾分析我院近3年腹部无明显病变患者的强化CT图片612例，按年龄分成21~30岁、31~40岁、41~50岁、51~60岁、61~70岁、70岁以上6组及男女两组，将强化CT图像3mm重建后分别测量胰腺钩突角的最大值，然后用统计软件进行分析。结果各年龄组胰钩突角大小如下：21~30岁组（34.7±5.4）°、31~40岁组（56.3±4.8）°、41~50岁组（64.1±5.1）°、51~60岁组（57.8±3.3）°、61~70岁组（47.4±4.1）°、71岁以上组（33.5±3.9）°；女性（54±2.7）°、男性（61±3.5）°。结论51~60岁组之前随着年龄增加胰头钩突角逐渐增大，51~60岁组以后随着年龄增加胰头钩突角逐渐减小，不同性别之间比较男性钩突角略大于女性。。“,”Objective To observe and measure the angle of the uncinate process in different ages and different genders on the enhanced MDCT images so that the normal range of the angle of the uncinate process could be determined, which could provide data for the diagnosis of occupying lesion of the pancreatic head. Method Retrospective analysis was carried out for 612 cases of patients without obvious abdominal diseases with the age older than 20 years. the patients were divided into 6 groups (21~30 years, 31~40 years, 41~50 years, 51~60 years, 61~70 years and above 71 years) and 2 groups by gender(male and female). The max angle of the Uncinate process was measured after enhanced CT image reconstruction with a collimation of 3 mm, and analysis the data was performed by SPSS software. Result The angles of different groups were as follows:(34.7±5.4)°,(56.3±4.8)°,(64.1±5.1)°,(57.8±3.3)°,(47.4±4.1)°and(33.5± 3.9)° respectively in the 6 groups, and(54 ± 2.7)° in female、(61 ± 3.5)° in male. Conclusion The angle of the uncinate process increased younger than 60 years old, and then decreased. We also learn that the angle of the uncinate process is larger in male than in female.