Dobutamine stress test combining with mitral annular motion velocity of pulsed Doppler tissue imaging in quantitative assessment of myocardial viability in patients with myocardial infarction

• 多巴酚丁胺负荷试验结合脉冲组织多普勒二尖瓣环运动定量评估心肌梗死患者心肌存活