目的 分析和探讨多层螺旋CT(MSCT)在诊断胡桃夹综合征中的临床应用。方法 选择本院在2013年8月-2016年5月间 收治的60例胡桃夹综合征患者，并选取100例正常人为研究主体，分别是A组和B组。对比两组的MSCT影像结果，观 察A组LRV(左肾静脉)的MSCT表现和所伴随的征象；对比两组SMA(肠系膜上动脉)和AA(腹主动脉)间的夹角值、SMA、 AA与LRV中心层面部位间的距离，对比LRV于夹角受压部位的截面积(C1)、于近肾端最宽部位的截面积(C2)，计算两 者比值，给予统计学分析。结果 A组中，5例呈现左肾增大现象，5例呈左肾灌注慢，14例呈侧枝循环建立，60例患 者均呈现出LRV的“漏斗样”病变。将两组的各项测量数据相比较，有差异，有统计学意义(P＜0.05)。结论 MSCT 检查可以较为清晰的反映LRV的具体形态，并能准确测量各项数据，极为直观的判定LRV受压部位的变窄情况，且能 观察胡桃夹综合征的伴随征象，从而提高该病诊断的准确性。

Objective To analyze and discuss the clinical application of multi-slice spiral CT (MSCT) in the diagnosis of nutcracker syndrome. Methods 60 cases of nutcracker syndrome were selected from August, 2013 to May, 2016, and 100 normal subjects were selected as group A and group B respectively. The MSCT findings and the accompanying signs of LRV (left renal vein) in group A were compared with those of the two groups. The angle between SMA (superior mesenteric artery) and AA (abdominal aorta) AA and LRV, the ratio of the cross-sectional area (C1) of the LRV to the compression point of the proximal end of the LRV, and the cross-sectional area (C2) of the proximal part of the proximal renal region were calculated. The statistical analysis was performed. Results In group A, 5 cases showed left renal enlargement, 5 cases showed slow perfusion of left kidney, 14 cases showed collateral circulation, and 60 patients showed LRV funnel-like lesions. The data of the two groups were compared, there were differences, statistically significant (P<0.05). Conclusion MSCT examination can clearly reflect the specific morphology of LRV, and can accurately measure the data, extremely intuitive to determine the narrowing of the LRV compression site, and can observe the nutcracker syndrome associated with signs, thereby enhancing the disease Diagnostic accuracy.