Table 1. Parameters changed to investigate impact on radiomics features.

	Scanner
Parameters	GE Discovery 710	Siemens mCT	Philips Vereos
Field of view (cm)	25, 50, 70
Filter cutoff (mm)	1, 3, 5, 8, 10	1, 3, 5, 8, 10	None, 1, 3, 5, 8, 10
Iterations × subsets	1 × 4, 2 × 8, 4 × 8, 2 × 18, 4 × 32	Non-TOF: 1 × 4, 2 × 8, 4 × 8, 2 × 12, 4 × 24 TOF: 1 × 21, 2 × 21, 3 × 21, 4 × 21	1 × 4, 2 × 8, 4 × 8, 2 × 20, 3 × 15, 4 × 32
Matrix size	128, 192, 256	128, 200, 256, 400, 512
Time per bed position (min)	2, 3, 4, 5	2, 3, 4, 5	2, 3, 4, 5
Type of reconstruction	VPFX, VPFX-S, VPHD, VPHD-S, QCFX-S, QCHD-S	Backprojection, backprojection TOF, iterative, iterative TOF, TRUEX, TRUEX TOF
Z smoothing	None, light, standard, heavy

TOF: time of flight

Types of reconstruction are proprietary names used by each vendor.