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目的 探讨应用256层CT血管成像(computed tomography angiography,CTA)四肢动脉不同部位血管急性闭合性损伤的临床应用价值.方法 对2016年1月-2018年2月南方医科大学南方医院收治的12例外伤患者CTA进行回顾性分析,利用多种后处理技术观察血管损伤情况,并与手术或数字减影血管造影术(digital subtraction angiography,DSA)进行比较.结果 12例血管损伤患者包括下肢血管损伤10例,上肢血管损伤2例.结论 256层CTA能很好显示血管损伤的程度,包括断裂或破裂部位、范围、局部是否伴有血栓形成、动静脉瘘形成,是否伴有活动性出血、假性动脉瘤,为四肢血管损伤患者明确血管损伤情况提供直接依据,对临床决定患者的治疗方式的选择具有肯定的临床应用价值.“,”Objectives To evaluate the clinical value of 256-slice CT angiography (CTA) in detecting acute vascular injury in different parts of the extremities. Methods The CTA imaging of 12 patients with vascular injury in our hospital were retrospectively analyzed. Vascular injury was observed by various CT reconstruction techniques and compared with surgery or DSA. Results There were 10 cases with vascular injury in lower limb and 2 cases in upper limb. Conclusion The 256-slice CTA can provide a direct evidence for acute vascular injury in the extremities,by showing the degree of vascular injury, including the location and extent of fracture or rupture, the thrombosis, the arteriovenous fistula, the active bleeding and pseudoaneurysm. It has a positive clinical value in the clinical decision.