目的　将小剂量多巴酚丁胺负荷超声心动图试验用于急性心肌梗塞后两周患者的研究。方法　根据美国超声协会推荐的心室壁 16节段划分法 ,推断引起室壁运动异常区域血流灌注异常的梗塞相关动脉 ,并与金标准冠状动脉造影结果相比较。结果　该试验对梗塞相关动脉残存狭窄诊断的敏感性及特异性分别为 80 %、78 8%。结论　小剂量DSE试验对梗塞相关动脉残存狭窄也有较好的诊断价值 OBJECTIVE: To study the low-dose dobutamine stress echocardiography in two weeks after acute myocardial infarction. Methods According to the 16-segment classification of ventricular wall recommended by the American Society of Ultrasound, infarction-related arteries that caused abnormal perfusion in the wall of the abnormal wall were estimated and compared with gold standard coronary angiography. Results The sensitivity and specificity of this test for the diagnosis of infarct-related residual stenosis were 80% and 78%, respectively. Conclusions The low-dose DSE test has a good diagnostic value for the residual stenosis of infarcted artery