AIM:To investigate the clinical significance of the left ventricular function in patients with CHD by intelligent acoustic quantification and dobutamine stress echocardiography(AQI DSE).

• 目的:探讨声学定量技术(AQI)多巴酚丁胺负荷超声心动图(DSE)检测冠心病(CHD)心功能变化及临床意义。