By reviewing the PET imaging results for the series of [64Cu]­Cu-NODAGA-cLAB-TATEs andof [64Cu]­Cu-NODAGA-cLAB4-scrTATE, we hypothesized that the increasedintegral tumor uptake for these heterobivalent radioligands mightoriginate from the additional SST2-binding of the albumin-boundradioligand. Here, ALB is linked to neoplasm.