38例下肢静脉病变的磁共振静脉造影评价

Evaluation of MR venography of lower extremity in 38 cases

目的:探讨MRV诊断下肢静脉病变的应用价值。材料和方法:38例患者进行了2DTOF法下肢静脉MRV检查,其中2例进行了增强MRV检查。检查范围包括下腔静脉下段至小腿静脉。18例同时行XRA检查。结果:38例MRV共显示腘静脉以上正常深静脉395条。血栓形成5条,狭窄5条,闭塞13条。与XRA比较,MRV显示深静脉异常的灵敏度为100%,特异度为66.67%,准确度为94.44%。结论:MRV对显示下肢静脉狭窄和闭塞的部位、范围及程度的准确性较高,是一种新的无创伤的检查方法。

Objective： To evaluate the clinical value of magnetic resonance venography in diagnosing venous disease of lower extremity. Method： Thirty-eight cases were examined with 2D TOF MRV. Contrast enhancement MRV was performed from the distal part of inferior vena cava to the shank. Result： In 38 cases, MRV showed normal deep veins in 395 segments, venous thrombosis in 5 segments, stenosis in 5 segments and occlusion in 13 segments. With the X-ray angiography （XRA） as a standard of reference, the sensitivity, specificity and the accuracy of MRV in detecting deep vein abnormalities were 100%, 66.67% and 94.44%. Conclusion： As a new repeatable noninvasive imaging examination, MRV is accurate in showing the site, range and degree of venous stenosis and thrombosis of the lower extremity.