目的探讨磁共振血管成像(MRA) 在诊断下肢糖尿病足(DF)中的应用价值。 方法 对确诊为下肢DF患者28例行MRA和 DSA两种不同的影像学方法诊断，以DSA诊 断结果为“金标准”，对比诊断结果。结 果 本组28例患者，均将下肢6个解剖段， 共显示168段下肢动脉血管；以DSA检查为 “金标准”，MRA诊断162段符合，符合率 为96.434%，敏感性为97.85%，特异性为 94.67%；MRA下肢动脉血管病变程度的符 合率为87.64%。结论 MRA作为临床中诊断 下肢糖尿病足的重要无创影像学方法，对 临床早期干预治疗具有指导意义。

Objective To investigate the application value of magnetic resonance angiography (MRA) in the diagnosis of lower extremity diabetic foot (DF). Methods MRA and DSA were performed in 28 patients who were diagnosed with lower extremity DF. The diagnostic results of DSA were taken as the golden standard to compare the diagnostic results. Results Among 28 patients in the study, there were 6 anatomical segments, showing a total of 168 lower limb arterial blood vessels; DSA was taken as the golden standard and 162 segments diagnosed by MRA were up to the standard. The accordance rate, sensitivity and specificity were 96.434%, 97.85% and 94.67% respectively. The accordance rate of MRA in the diagnosis of the degree of lower extremity arterial vascular lesions was 87.64%. Conclusion MRA is an important non-invasive imaging method in the clinical diagnosis of lower extremity diabetic foot