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Table 3 Image reconstruction parameters leading to the three optimization criteria CRCmean, CRCmax and CRCpeak for 5 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 3 it – 3 mm 3 it – 4 mm
  GE Signa 2 it – 4 mm + IR 2 it – 6 mm IR 2 it – 7 mm + IR
RMSD   2.25 1.98 1.90
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 2 it – 6 mm
RMSD   9.16 4.05 3.35
CRC-Peak Siemens mMR 4 it – 3 mm + PSF 4 it – 4 mm + PSF 2 it – 5 mm
  GE Signa 4 it – 4 mm + IR 4 it – 3 mm 4 it – 7 mm
RMSD   3.55 3.42 3.16