Table 3.

CT Scanners, acquisition, and reconstruction parameters used for varying pitches.

CT scanner	kVp	mAs	Recon. FOV (mm)	Scan type	Recon. kernel	Slice thickness, recon. interval	Detector configuration (mm)	Pitch (variable)
Philips Brilliance 64	120	65	250	Helical	Standard (B)	1.5 mm, adjacent	$64\times 0.625$	0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3
Siemens Definition AS	120	65	250	Helical	I31f-2	1.5 mm, adjacent	$64\times 0.6$	0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4
Siemens Sensation 64	120	65	250	Helical	B31f	1.5 mm, adjacent	$64\times 0.6$	0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4