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Table 2 Image reconstruction parameters leading to three optimization criteria for CRCmean, CRCmax and CRCpeak for 30 min data acquisition. All Siemens mMR reconstructions were done with 21 subsets, while all GE Signa reconstructions were done with 16 subsets and TOF (time of flight)

From: Harmonization of PET image reconstruction parameters in simultaneous PET/MRI

Metric   Optimized high CRC Intermediate Lowest RMSD
CRC-Mean Siemens mMR 4 it – 3 mm + PSF 4 it – 3 mm 4 it – 6 mm
  GE Signa 2 it – 3 mm + IR 2 it – 5 mm + IR 2 it – 7 mm
RMSD   2.79 2.07 1.82
CRC- Max Siemens mMR 4 it – 3 mm + PSF 3 it – 4 mm + PSF 4 it – 5 mm
  GE Signa 2 it – 3 mm + IR 2 it – 5 mm + IR 4 it – 6 mm
RMSD   5.83 4.89 3.57
CRC-Peak Siemens mMR 4 it – 3 mm + PSF 3 it – 3 mm 4 it – 7 mm + PSF
  GE Signa 4 it – 4 mm + IR 4 it – 6 mm + IR 4 it – 7 mm
RMSD   3.23 3.05 2.91