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目的：用ＭＲＩ定量分析急性心肌梗塞。方法：２１例首次患急性心肌梗塞者进行ＭＲＩ自旋回波和增强扫描；分别在增强扫描、Ｔ２ 加权图像及按照ＨＢＤＨ累积释放计算出的梗塞灶重量；用心电图ＱＲＳ积分评估左室梗塞范围；并比较他们间的差别。同时行电影序列分析心功能。结果：增强扫描图像上（梗塞灶平均重量１８．１９±９．２１ ｇ）和ＨＢＤＨ法所测结果间无差别且相关性最佳（ｒ＝ ０．９３，ｐ＜ ０．００１）；Ｔ２ 加权上所测重量与另两种方法间有显著差别；电影序列和超声心动图在心功能分析上，相关性亦佳。结论：ＭＲＩ增强扫描可定量分析ＡＭＩ，且优于其它几种方法。电影序列可测量心功能
Objective: To quantitatively analyze acute myocardial infarction with MRI. METHODS: Twenty-one patients with acute myocardial infarction for the first time underwent MRI spin-echo and contrast-enhanced scan. The infarct size was calculated by enhanced scan, T2-weighted image and HBDH cumulative release respectively. The range of left ventricular infarction was evaluated by ECG QRS score. Compare the differences between them. Simultaneous movie sequence analysis of cardiac function. Results: There was no significant difference between the results of HBDH and the best correlation (r = 0.93, p <0.001) on the enhanced scan images (mean infarct size 18.19 ± 9.21 g); T2 weighted There was a significant difference between the measured weights and the other two methods; the correlation between the movie sequences and echocardiography in cardiac function analysis was also good. Conclusion: MRI enhanced MRI quantitative analysis of AMI, and better than several other methods. Movie sequences measure heart function