Objective To evaluate the value of Doppler tissue imaging (DTI) in assessment of left ventricular totalsystolic function in dobutamine (DBA) stress echocardiography (DSE).

• 目的探讨多巴酚丁胺负荷试验(DSE)中多普勒组织成像(DTI)技术检测左室整体收缩功能变化的临床应用价值。