Table 1.

CT Scanning Parameters

Parameters	Standard-dose CT			Low-dose CT
CT scanner	Brilliance CT 64	Discovery CT750 HD	Revolution CT	Revolution CT
Tube voltage	120 kVp
Noise index	N.A.	7	7	14
Tube current	ACS +Z-DOM	Auto mA	Auto mA	Auto mA
Beam collimation	0.625 mm ×64	0.625 mm ×64	0.625 mm ×128	0.625 mm ×128
Rotation time	0.5
Pitch	0.859:1	0.984:1	0.508:1	0.508:1
Scan field-of-view	50 cm
Display field-of-view	38 cm
Kernel	Smooth (A)	STND	STND	STND
Reconstruction	iDose 3	ASiR-V 30%	ASiR-V 40%	ASiR-V 40%/TFI-H

ASiR-V, adaptive statistical iteration reconstruction Veo; NA, not applicable; TFI, TrueFidelity Image.