Data were acquried using a SIMENS SPECT single-head camera equipped with a low energy all-purpose collimator allowing a simmltaneous 180 rotation with 32 steps of 6.

• 由计算机固有程序重建断层图像，以心肌各节段灌注缺损作为定性分析，以靶心图缺损范围和缺损心肌占冠脉供血心肌的百分数作为定量分析指标。