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目的：探讨ＭＲＡ在下肢动脉旁路术后随访中的临床应用价值。材料与方法：２０例下肢动脉旁路术后行２ＤＴＯＦＭＲＡ检查，其中３例同时行动态增强ＭＲＡ（ＤＣＥＭＲＡ）。２０例中１２例与彩超对照，４例与手术对照研究。结果：２０例下肢动脉旁路术后随访ＭＲＡ检查共显示移植血管１９条，其中１２例与彩超对照结果，两者示移植血管完全一致为１１条，两者符合率为９１．６６％（１１／１２）。１２条移植血管２４个吻合口比较一致者２１个，两者符合率８７．５％（２１／２４）。结论：ＭＲＡ可清晰显示移植血管和吻合口，是评价下肢动脉旁路术后疗效及随访的最佳影像学方法之一。
Objective: To investigate the clinical value of MRA in follow-up of lower extremity arterial bypass. Materials and Methods: Twenty cases of lower extremity arterial bypass were examined by 2DTOFMRA, of which 3 cases were treated with dynamic enhanced MRA (DCEMRA). Among 20 cases, 12 cases were compared with color Doppler ultrasound and 4 cases were compared with surgery. Results: Twenty patients underwent MRA after the follow-up MRA examination of 20 cases of lower extremity arterial bypass. The results of 12 cases were compared with those of color Doppler ultrasonography. The results showed that there were 11 identical vessels in both groups, the coincidence rate was 91.66% (11 / 12). There were 21 consistent 24 anastomoses in 12 transplanted blood vessels, the coincidence rate was 87.5% (21/24). Conclusion: MRA can clearly show the transplanted blood vessels and anastomosis. It is one of the best imaging methods to evaluate the efficacy and follow-up of lower extremity arterial bypass.