冠脉病变的核磁共振成像与冠脉造影的对比研究

目的应用磁共振成像（MRI）对冠脉病变进行检测，探讨冠脉病变和冠脉狭窄在MRI上的影像学表现，对比冠脉造影评价冠脉磁共振显影（CMRA）技术诊断冠脉病变的敏感性和特异性。方法选取2007年12月至2009年6月在本院行冠脉造影的患者28例，造影前一周内在MRI下行CMRA。根据造影结果和CMRA成像结果的对比，评价CMRA显示冠脉主支的可靠性及效度。并应用Gensini评分和CMRA评分分别评价冠脉造影和CMRA，比较两者有无差异性。结果对比冠脉造影，CMRA对冠脉主支病变检测的准确性在85％，敏感性83％，特异性84％，Gensini评分和CMRA评分无显著差异性。结论MRI可以用来冠脉显像，但其准确性有待进一步提高，可以用来指导临床和随访。

The MRI study of the coronary artery disease between coronary angiography and coronary MRI

Objective To investigate the MRI sign of coronary artery disease and coronary stenosis with using the coronary MRI angiograpy and evaluate the exactness and effectiveness of the MRI technique. Methods 28 patients were chosen to accept with selected coronary angiography and they also accepted coronary MRI within a week before the angiography. According to the results of the coronary angiography and coronary MRI. We evaluate the exactness and effectiveness of the MRI technique in the detection of the main coronary artery branch,. And we also compare the coronary angiography with Gensini scores to coronary MRI CMRA scores to detect coronary artery leisiorls. Results The correctness of CMRA in detection of the main coronary artery branchs was 85% ; the sensitivitity was 83.0 % ; the specitivity was 84%. And the Gensini scores and CMRA scores had no statistical significance. Conclusion MRI can be used for coronary angiography, but the correctness of the MRI would be improved, which can be a help for clinical follow-up visit.