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。