Two other studies focusing on the evaluation of prostate cancer with 68 Ga-PSMA-11 [31, 58] reported higher ideal β-values for this high energy positron emitter, slightly higher with ter Voert et al. (PET/MR study, BSREM500-600) and considerably higher with Lindström et al. (PET/CT study, BSREM900), which, however, might be explained by the known differences in β-value characteristics between PET/MR and PET/CT. This evidence concerns the gene FOLH1 and Familial prostate cancer.