FOLH1 and neoplasm: The PSMA+ PC3 PIP tumors as well as PSMA positive organs such as, kidney and urinary bladder were clearly delineated already at 15 min p.i. More specifically, the NOTA-conjugated radioligand 68Ga-43 exhibited the highest tumor uptake with 42.2 ± 6.7 % IA/g at 1 h p.i. and the fastest background clearance.