Objective To contrast diagnostic value of electrocardiogram(ECG),ultrasound cardiogram(UCG) and coronary arterigraphy(CAG) about diagnostic myocardiac infarction(MI).

• 目的对比研究心电图(ECG)、超声心动图(UCG)、冠状动脉造影(CAG)对心肌梗死(MI)的诊断价值。