Table 1 Image reconstruction parameters for all four different PET systems.

From: FDG PET biomarkers for prediction of survival in metastatic melanoma prior to anti-PD1 immunotherapy

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Reconstruction

Iteration and subsets

Gaussian post-filtering

Matrix

Voxel size (x,y,z mm)

Siemens, Biograph Horizon 16

OSEM

3 iterations and 10 subsets

FWHM 4 mm

360

2.06 × 2.06 × 2.03

GE, Discovery 690

OSEM

2 iterations and 24 subsets

FWHM 4 mm

256

2.73 × 2.73 × 3.27

Siemens, Biograph 20 mCT

OSEM

2 iterations and 21 subsets

FWHM 5 mm

256

1.59 × 1.59 × 3

Siemens, Biograph 6 HI-REZ

OSEM

4 iterations and 8 subsets

FWHM 5 mm

256

4.06 × 4.06 × 4

  1. OSEM ordered subsets expectation maximization, FWHM full width at half maximum.