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应用二维超声彩色多普勒技术，以经胸壁和经食道两种检测方法对发病后第２８天的急性心肌梗死（ＡＭＩ）３４例及典型的心肌缺血和正常人各３３例进行了左室形态构型与机能的研究。结果发现：半数以上的ＡＭＩ病人发生显著的左室形态及构型的变化；１／４的ＡＭＩ病人存在着潜在性的射血机能异常。左室形态的主要改变是中部环径增大，使其由锥体形向球体形转化；左室射血机能的主要改变是射血分数降低、心肌收缩力减退及左室工作方式改变。
Two-dimensional ultrasound color Doppler technique was used to detect the incidence of acute myocardial infarction (AMI) on the 28th day after onset in 34 cases and 33 cases of typical myocardial ischemia and normal in both transthoracic and transesophageal Study on Morphology Configuration and Function of Room. The results showed that: more than half of AMI patients with significant left ventricular morphology and configuration changes; 1/4 AMI patients there is a potential ejection failure. The main change of left ventricular morphology is the increase of central ring diameter, which makes it transform from cone to sphere. The main changes of left ventricular ejection function are the decrease of ejection fraction, the decrease of myocardial contractility and the change of left ventricular working pattern.