Effects of combining multiple dose reduction techniques on coronary computed tomography angiography

Table 1 Computed tomography parameters for the conventional and multi-modality treatment groups

Dose group	Conventional group	Multi-modality group
Tube voltage, kV	100	80
Tube current, mA	Smart milliampere	80% smart milliampere
D-FOV, mm	220	220
Rotation time, s	0.275	0.275
Thickness, mm	0.5	0.5
Interval, mm	0.5	0.5
AIDR3D	Standard EU10	Standard EU10
Scanning method	ECG gating	ECG gating
Cardiac cycle	30%-80%	60%-80%
Scan position	Conventional	Isocentric
Scan length	140 mm	140 mm

AIDR3D: Adaptive Iterative Dose Reduction Using Three Dimensional Processing; ECG: Electrocardiography.