Table 2. 320-CTCA scan parameters.

Parameter	Group 1 (HR ≤60) (n=55)	Group 2 (HR 60–80) (n=52)	P value
Acquisition heart rate (bpm), (mean ± SD)	52±5	69±8	<0.001
Received rate control medication, n (%)	17 (31%)	12 (23%)	0.36
Tube current (mA), (mean ± SD)	590±191	568±178	0.57
Tube Voltage, kVp, median (IQR)	100 (100–120)	100 (100–120)	0.51
Radiation dose (mSv), median (IQR)	2.45 (1.62–3.24)	2.70 (1.58–4.39)	0.35