FOLH1 and neoplasm: Comparison of the absolute tumor uptake after injection of 0.05 nmol [177Lu]Lu-Ibu-DAB-PSMA or [177Lu]Lu-PSMA-617 revealed an approximately fourfold higher accumulation in PC-3 PIP tumor xenografts (78 ± 14% IA/g and 45 ± 9% IA/g at 24 h p.i.)than in LNCaP tumor xenografts (18 ± 7% IA/g and 12 ± 4% IA/g at 24 h p.i.).