关键词: 下肢血管闭塞病变, 血管腔内治疗, 计算机体层扫描血管造影, 狭窄程度, 斑块性质, 病变部位

Abstract: This study investigated the value of computed tomography angiography (CTA) in lower extremity vascular occlusion and its relationship with endovascular efficacy. A total of 93 patients with lower extremity vascular occlusion confirmed by digital subtraction angiography (DSA) were examined by computed tomography angiography (CTA). The results of CTA diagnosis, the degree of vascular stenosis and the consistency with DSA diagnosis were analyzed, and the relationship between CTA signs and endovascular curative effect was discussed. The results showed the location and degree of stenosis of lower extremity vascular occlusion diagnosed by CTA were highly consistent with those diagnosed by DSA (P<0.05). The length of diseased vessels >1.41 cm, the degree of vascular stenosis grade 4, the CT value of distal diseased vessels > 62.65 Hu and calcified plaque were the risk factors for the failure of endovascular treatment of lower extremity vascular occlusion (P<0.05). Conclusion CTA is a reliable method for the diagnosis of lower extremity vascular occlusion. By examining the length of diseased vessels, the degree of vascular stenosis, distal CT value and the nature of atherosclerotic plaque in the lumen, it can help to reduce the blindness of treatment and improve the success rate of endovascular treatment.

Key words: lower extremity vascular occlusive disease, endovascular treatment, computed tomography angiography, degree of stenosis, plaque nature, lesion location