【摘要】 目的:探讨CT动脉血管成像(CTA)和增强磁共振血管成像(CE-MRA)在双下肢动脉硬化闭塞症(LEASO)诊断中的价值和优势。方法:对本院经DSA和临床确诊为LEASO的40例患者的下肢CTA和CE-MRA的图像进行分析,并用统计学方法分析两种检查方法对闭塞部位诊断及评估狭窄程度的准确性。结果:经DSA诊断狭窄程度大于50%的共有305段血管,其中髂动脉段有63段,股腘动脉段有128段,经胫腓动脉段有114段;CTA和CE-MRA对病变血管的定位诊断符合率分别为90.82%和84.59%,对各个分段血管的诊断和DSA的一致性均较高,但不具有显著性差异(P均>0.05)。CTA对血管狭窄程度的评估和DSA的符合率为90.51%,高于CEMRA(P<0.01),但是两者均具有一定的高估率。结论:CTA和CE-MRA对LEASO的诊断均具有重要价值,两者对病变血管的定位诊断基本一致;CTA对血管狭窄程度的评估更加准确。更多还原

【Abstract】 Objective:To comparatively study the value and advantage of CT angiography(CTA)and Contrast-enhanced magnetic resonance angiography(CE-MRA)in diagnosing the lower extremity arteriosclerosis obliterans syndrome(LEASO),compared with digital subtraction angiography(DSA)as a gold standard.Methods:The images of CTA and CE-MRA of 40 cases proven LEASO by DSA and clinical symptoms were analyzed,and the diagnosis accuracy of obliteration sites and stenosis degree checked by CTA and CE-MRA were analyzed by statistical methods.Results:The stenosis degree of 305 arteries diagnosed by DSA were more than 50%,including 63 iliac arteries,128 femoral and popliteal arteries and 114 tibiofibular arteries.The consistent rate of CTA and CE-MRA in the diagnosis of vascular lesions was 90.82% and 84.59% respectively,and the consistency of CTA and CE-MRA compared with DSA in diagnosing each segment of artery was higher,and there was no significant difference(P>0.05).The coincidence rate of assessment of stenosis degree by CTA compared with DSA was 90.51%,which was higher than that by CE-MRA,and the difference was significant(P<0.01).Conclusion: It is valuable o f both CTA and CE-MRA in diagnosing the LEASO,and both them has the same value in the location diagnosis.But the assessment accuracy of stenosis degree by CTA is higher,which can be as a reliable diagnostic method of LEASO.更多还原