Clinical value of CT angiography and MR angiography in the diagnosis of arteriosclerotic occlusive disease of lower limb

VernacularTitle:CT和MR血管成像诊断下肢动脉硬化性闭塞症的临床价值
Author: Yuantong GAO ; Min LUO ; Yongchou LI ; Qing JIA
Publication Type:Journal Article
Keywords: Arteriosclerosis obliterans; Tomography,spiral computed; Magnetic resonance angiography
From: Chinese Journal of Primary Medicine and Pharmacy 2011;18(5):580-582
CountryChina
Language:Chinese
Abstract: Objective To study the value of CT angiography(CTA) and three dimensional contrast enhanced magnetic resonance angiography(3D CE-MRA) in the diagnosis of arteriosclerotic occlusive disease (ASO) of lower limb and evaluate arterial stenosis. Methods Thirty-eight patients clinically suspected ASO were studied with CTA and3D CE-MRA,twenty-two patients underwent DSA at the same time. The degree of seriousness of the stenosis shown by various imaging techniques were analyzed respectively. Results Using the DSA images as the standard reference, the sensitivity and specificity of CTA were 97.3% ,99. 1%, and MRA both were 100.0% in detecting the segments occluded. With regard the detection of segments that had more than moderate stenosis ,the sensitivity and specificity of CT were 99.3% ,97.6% ,and MRA were 97.9% ,96.4%. The degree of seriousness of the stenosis shown by MRA was overestimated than CTA on the segments that had more than moderate stenosis(x2 =5.80,P ＜0. 05). Conclusion CTA and 3D CE-MRA were reliable method in diagnosis of ASO.