Table 1.

Scanned protocol and image acquisition parameters in phantom and in clinical scanned images of this study.

	In phantom	In clinical scan
kV	120	120
Scan protocols	Thorax; abdomen	Paraspinal; brain+
Slice thickness (3 mm)	3	2; 1
Tube current modulation	Yes	Yes; no
Quality reference mAs*	160, 200, 250	270; -+
Dose right**	17,19,21,23,25
Iterative reconstruction	SAFIRE-3*; iDose-3**	SAFIRE-3
Reconstruction kernel	Br38*/regular**	Br32, Br38, Br49, Br58, Br62; Hr32. Hr38, Hr49, Hr60, Hr68, Hf38
ROI size (pixel)	10	2, 4, 6, 10, 20, 30

^*:at CT_s;

^**:at CT_p;

^+:no ATC using CTDI_vol of 70.3 mGy.