MR扫描对急性心肌梗塞及有无再灌注的研究

The Study of AMI, Reperfusion of No reperfusion,by Gd-DTPA Enhanced MRI

目的 用MRI评价急性心肌梗塞 (AMI)有无再灌注。方法 将 2 1例确诊为AMI者分为有再灌注和无再灌注两组 ;2组均行MRIT1、T2 加权和增强扫描 ,然后测量每例心功能和梗塞灶重量。结果 梗塞心肌明显强化 ;有再灌注组强化表现为透壁且均匀 ,无再灌注组强化表现为透壁但不均匀 (周边强化 ) ;前者心功能较后者好 ,梗塞灶重量则较后者轻。结论 MR增强扫描可评价梗塞心肌有无再灌注。

Objective To evaluate the value of MRI in diagnosing acute myocardial infarction (AMI) with reperfusion or no reperfusion. Methods 21 patients with first AMI proved by clinical materials were classified into reperfusion group and no reperfusion group.Both group patients underwent MRI T 1、T 2 weighted sequence and enhanced scanning.We also measured the cardiac function and the infarct size. Results Infarcted myocardium were enhanced markedly.The enhancement pattern of the reperfusion group is transmural and homogeneous enhancement,the no reperfusion group is transmural and marginal enhancement with less enhanced area centrally.The reperfusion group had a better cardiac function than the no reperfusion group and smaller infarect size than the no reperfusion group. Conclusion Enhanced MRI can assess AMI with reperfusion or without reperfusion. [