FOLH1 and neoplasm: A comparison of the in vivo biodistribution of the EuE-based inhibitors EuE-k-18F-FBOA and EuE-k-β-a-18F-FPyl and of the EuK analogs 18F-DCFPyl and 18F-PSMA-1007 in LNCaP-tumor-bearing SCID mice (1 h (n = 4) and 2 h p.i. (n = 4)) is shown in Fig. 4.