磁共振成像在老年心肌梗塞中的应用

The use of magnetic resonance imaging in myocardial infarction in the elderly

对３２例老年急性心肌梗塞恢复期和陈旧性心肌梗塞患者行磁共振成像（ＭＲＩ）检查，并与心电图（ＥＣＧ）和超声心动图（ＵＣＧ）对比。ＭＲＩ可直观的显示出梗塞部位室壁变薄，信号减低，对心尖部梗塞的诊断优于ＥＣＧ。ＭＲＩ在室壁瘤中检出例数多于ＥＣＧ和ＵＣＧ。在急性心肌梗塞恢复期和陈旧性心肌梗塞患者中，当高度怀疑室壁瘤或心包积液而常规ＥＣＧ和ＵＣＧ无阳性发现时，有必要行ＭＲＩ作为补充检查，以明确诊断。

32 cases of elderly acute myocardial infarction or old myocardial infarction were examined by magnetic resonance imaging (MRI),and the result was compared with electrocardiogram (ECG) and ultrasonic cardiogram (UCG).Thin ventricular wall and low signal of myocardial infarction were shown in MRI.MRI in diagnosis of myocardial infarction located in cardiac apex is better than ECG.Cases diagnosed as ventricular aneurysm by MRI were more than cases by ECG or UCG.When ventricular aneurysm or hydropericardium is highly suspected in patients with acute or old myocardial infarction but there are no findings in conventional ECG and UCG,it is necessary to take MRI as a supplement in order to make definite diagnosis.