FOLH1 and neoplasm: Control studies were performed with [68Ga]Ga-THP-PSMA, and though the tumor uptake was not significantly different between 68Ga (1.79 ± 0.54% ID/g) and 45Ti (1.67 ± 0.26% ID/g) at 2 h post-injection, the overall biodistribution was significantly different for [68Ga]sGa-THP-PSMA, with a low background in PET/CT images and no signs of decomplexation with [68Ga]Ga-THP-PSMA (Figure 5) [51].