磁共振静脉造影诊断Cockett综合征的价值

摘要

Objective To evaluate non-enhancement magnetic resonance venography (MRV) of iliac vein in diagnosing Cockett syndrome.Methods Magnetic resonance iliac venography was performed with Ingenia 3.0 T superconducting type MRI system.Abdominal surface coil was employed.The scanning sequences included M2DIPEAR (TR/TE=45/5.8 ms,flip angle=60°),THRIVE (TR/TE=6.8/3.5 ms,flip angle=10°),BTFESPAIR (TR/TE=3.4/1.7 ms,flip angle=80°) and FLAIR (TR/TE=9 000/120 ms,flip angle 90°).The layer thickness of 3 mm was used in all scanning,and the average number of acquisition was 3 times.Results On MRV imaging,Cockett syndrome was characterized by narrowed anteroposterior diameter and broadened transverse diameter of the compressed iliac vein,and curved impression could be seen on its anterior border,and collateral vessel formation could be observed.The mean diameters of the left iliac veins in the light,mnedium and severe patients with Cockett syndrome were 7.52,4.83 and 2.76 mm respectively,with the average compression ratios being 37％,69％ and 83％ respectively.Conclusion Non-enhanced MRV is a feasible method for the diagnosis of iliac vein stenosis,this examination is especially suitable for the checking needs of specific population.%目的 评价磁共振静脉造影(MRV)非增强髂静脉成像诊断Cockett综合征的价值.方法 采用Ingenia 3.0T超导型MRI系统,选择腹部表面线圈,扫描序列为M2DIPEAR (TR/TE=45/5.8 ms,翻转角60°)、THRIVE(TR/TE=6.8/3.5 ms,翻转角10°)、BTFE-SPAIR(TR/TE=3.4/1.7 ms,翻转角80°)和FLAIR(TR/TE=9 000/120 ms,翻转角90°),层厚均为3 mm,平均采集次数3次.结果 Cockett综合征MRV表现为受压骼静脉前后径变窄,横径增宽,血管前缘可见弧形压迹,侧支血管形成等;轻、中、重患者左侧髂静脉平均直径分别为7.52、4.83、2.76 mm,平均受压率分别为37％、69％、83％.结论 非增强MRV是可行的髂静脉狭窄诊断方法,尤其适用于特定人群检查需要.