To evaluate the value and mechanism of Dobutamine-Metoprolol Stress Echocardiography (DMSE) on ischemia segments of miniswine and patients with coronary artery disease (CAD).

• 目的1．探讨多巴酚丁胺-美托洛尔负荷超声心动图(DMSE)对冠状动脉粥样硬化性心脏病(CAD)缺血节段的检测价值及机制。