RCA and LCX moved less than 3 mm/NTU during mid-diastole (75% R-R ECG trigger-delay) and end-systole (40% R-R ECG trigger-delay). LAD moved less than 3 mm/NTU throughout cardiac cycle.

• 当心率小于 75bpm时 ,RCA和LCX在ECG触发延迟 75%25R R的舒张中期和40%25R R的收缩末期运动速度小于 3mm/NTU ,LAD在整个心动周期运动速度基本都小于 3mm/NTU。