摘要
Abstract
Objective To investigate the effectiveness of application of CTA (Computerized Tomography Angiography) in diagnosis of lower extremity arteriosclerosis obliterans.Methods CTA imaging data of iffty-seven lower extremity arteriosclerosis obliterans patients who had been conifrmed by DSA (Digital Subtraction Angiography) were analyzed retrospectively. Taking DSA as the standard, the degree of stenosis was observed and the sensitivity, specificity, coincidence rate, negative predictive value and positive predictive value detected by CTA were calculated.Results As for the degree of stenosis, the consistency of CTA and DSA in the aorto-iliac artery and femoropopliteal artery was almost perfect. The sensitivity, speciifcity, coincidence rate, negative predictive value and positive predictive value of CTA in diagnosis of aorto-iliac artery were 98.2%, 95.3%, 96.5%, 98.8% and 93.4% respectively, and which of femoropopliteal artery were 96.8%, 90.9%, 95.2%, 90.9% and 96.8% respectively. The consistency of CTA and DSA in diagnosis of crual artery was substantial, which was lower than aorto-iliac and femoropopliteal artery. The sensitivity, specificity, coincidence rate, negative predictive value and positive predictive value were 97.0%, 87.2%, 93.7%, 93.8% and 93.6% respectively.Conclusion CTA was a safe, reliable and noninvasive means. It could display the degree of stenosis of lower extremity arterial occlusive diseases accurately. And it had very high consistency with DSA in the diagnosis of lower extremity arterial occlusive diseases.关键词
下肢动脉硬化闭塞症/CT血管造影/数字减影血管造影Key words
lower extremity arteriosclerosis obliterans/computerized tomography angiography/digital subtraction angiography分类
医药卫生
