Table 1.

The scanning and reconstruction parameters used for the SECT and DECT scanners.

Scanner	Tube voltage (kV)	Scan mode (Bow-tie filter)	Helical pitch	Tube current [mA]	Rotation time [s]	SFOV [cm]	DFOV [cm]	Beam collima-tion [mm]	Slice thickness [mm]	Convolu-tion kernel	CTDIvol,32cm [mGy]
SECT	120	LL	0.938	125	0.5	55	55	32	3.0	FC17	14.5
DECT	80/140	Body	0.969	225	0.6	50	50	40	2.5	Standard	13.84
Ref.*	120	Body	0.969	525	1	50	25	40	2.5	Standard	47

SFOV = scan field of view, DFOV = display field of view, CTDI_{vol, 32cm} = volumetric CT dose index in the 32 cm phantom.

^*The high-dose SECT scan acquired with the DECT scanner used to reconstruct the low-noise reference images.