Table 1.

Scanning and reconstruction parameters for the temporal bone specimen.

	EID	PCD
Scan mode	Spiral/helical	Axial
Protocol (bow-tie filter)	Head	Head
Tube potential (kV)	120	120
Rotation time (s)	1	1
Effective mAs	280	280
Detector collimation (mm)	$16\times 0.6$	$64\times 0.25$
Recon. kernel	Modified S90a	S80
Recon FOV (mm)	70	70
Slice thickness (mm)	0.6	0.5

^aThe modified kernel was provided by the manufacturer to best match the S80 kernel on the PCD system.