Purpose: To compare gated myocardial perfusion tomography (GMPT), gated blood pool imaging (GBPI) and ultrasound cardiography (UCG) in left ventricular ejection fraction (LVEF) calculation.

目的：探讨门控心肌灌注断层显像（GMPT）、平衡法心血池显像（GBPI）与心动超声（UCG）测定左室射血分数（LVEF）的差别。

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Left ventricular end diastolic volume (LVEDV), left ventricular end systolic volume (LVESV), left ventricular ejection fraction (LVEF) and cardiac events in each group were followed up.

随访两组患者的左室收缩末期容积(LVESV)、左室舒张末期容积(LVEDV)、左室射血分数(LVEF)及心脏事件。

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Objective: to evaluate if the mitral annular systolic motion velocities measured by Doppler quantitative tissue velocity image (QTVI) correlated with left ventricular ejection fraction (LVEF).

目的：应用超声定量组织速度显像(QTVI)技术测定二尖瓣环运动速度，评价其是否与左室整体收缩功能指标左室射血分数(L VEF)相关。

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