TABLE 2

Scanner Harmonization Parameters

Parameter	UWCCC	MSKCC	NCI
Scanner	Discovery VCT	Discovery VCT	Gemini
Reconstruction	3D OSEM	3D OSEM	3D OSEM
Grid size	256 × 256	256 × 256	144 × 144
Subset	14	14	33
Iteration	2	2	2
Postprocessing filter	4 mm	4 mm	—

3D OSEM = 3-dimensional ordered-subsets expectation maximization.