FOLH1 and neoplasm: Although both suppression of myocardial uptake and a degreeof PSMA-specific tumor uptake are observed, the tumor uptake is farbelow that required for effective imaging or treatment and is muchless than is commonly observed with other PSMA-based tracers in thistumor model.36 The results are consistentwith the hypothesis that dissociation is promoted by the reductionof the radiometal.