摘要
目的探讨双排螺旋CT在前胡桃夹综合征中的应用价值。方法回顾性分析6例经临床诊断为前胡桃夹综合征的双排螺旋CT影像学资料及临床资料。结果6例前胡桃夹综合征均显示SMA压迫LRV征象：AO与SMA之间夹角平均为18°；LRV穿SMA夹角时明显受压，其前后径受压前后之比约4：1；其中2例显示左侧精索静脉扩张，1例显示左侧卵巢静脉扩张。结论综合应用双排螺旋CT平扫、增强扫描及多种图像后处理技术能够清楚显示腹主动脉和肠系膜上动脉与受压的左肾静脉三者之间的解剖关系，并能发现增强扫描平衡期双。肾实质密度差异及精索静脉或卵巢静脉曲张等表现，可作为前胡桃夹综合征确诊的一种重要手段。
Objective To investigate the double helical CT in the former nutcracker syndrome in the application.Methods Retrospective analysis of 6 cases of clinically diagnosed as nutcracker syndrome before the double helical CT imaging data and clinical data.Resuits 6 cases of nutcracker syndrome have shown that pre-SMA oppression LRV signs： AO and SMA angle between the average of 18° ; LRV wear SMA angle was clearly under pressure, its anteroposterior diameter before and after the compression ratio is about 4：1;which 2 cases showed the left spermatie vein dilation, and 1 case of left ovarian vein dilation.Conclusion Integrated Application-row helical CT plain scan, enhanced scan and a variety of image post-processing techniques can be clearly shown on the abdominal aorta and superior mesenteric artery and compression of the left renal vein between the three anatomical relations and enhanced scan can find a balanceBilateral renal parenchyma phase differences and spermalic vein or ovarian varicose veins such as performance, can be used as pre-nutcracker syndrome, an important means of diagnosis.
