Table 1.

Acquisition and reconstruction parameters for EID- and PCD-CT scans performed with metal implants within the image field of view. * indicates the tube current of PCD-CT was adjusted to match the CTDIvol values of the clinical EID-CT scan for each patient. ** indicates the PCD reconstruction kernel was matched to the corresponding kernel for the EID system on which a specific patient was scanned. Thus, if the EID CT used iterative reconstruction (IR) in our clinical protocol (e.g., Flash scanner), we used IR for the PCD-CT images; if the EID CT used filtered back projection (FPB) in our clinical protocol (e.g., Sens64 scanner), we used FBP for the PCD-CT images.

Body Part	Scanner Type	kV	Quality Reference	Collimation	Kernels	Slice Thickness
Cervical Spine	Flash	140	280 mAs	128 × 0.6 mm	I31(2), I70(2)	2.0 mm
	Sens64	140	350 mAs	64 × 0.6 mm	B31, B70	2.0 mm
	PCD-CT	140Sn	*	48 × 0.25 mm	**	2.0 mm
Lumbar Spine	Flash	120	260 mAs	128 × 0.6 mm	I31(2), I70(2)	2.0 mm
	Sens64	120	350 mAs	64 × 0.6 mm	B31, B70	2.0 mm
	PCD-CT	140Sn	*	48 × 0.25 mm	**	2.0 mm
Shoulder	Edge	140	250 mAs	128 × 0.6 mm	I40(2), I70(2)	1.0 mm
	PCD-CT	140Sn	*	48 × 0.25 mm	I40(2), I70(2)	1.0 mm
Wrist	Edge	140	200 mAs	128 × 0.6 mm	I40(1), I70 (1)	0.6 mm
	Edge	140	250 mAs	16 × 0.3 mm	U40, U70	0.6 mm
	PCD-CT	140Sn	*	48 × 0.25 mm	**	0.6 mm
Elbow	Edge	140	250 mAs	16 × 0.6 mm	U40, U70	1.0 mm
	PCD-CT	140Sn	*	48 × 0.25 mm	U40, U70	1.0 mm
Ankle	Edge	140	250 mAs	16 × 0.6 mm	U40, U70	1.0 mm
	PCD-CT	140Sn	*	48 × 0.25 mm	U40, U70	1.0 mm