FOLH1 and neoplasm: The 64Cu-PET imaging and distribution of radioactivity in mouse tissue showed that both 64Cu-DOTA-mal-scFv-cys-LNP and 64Cu-DOTA-acetBr-scFv-cys-LNP conjugates were two-fold more efficiently uptaken by the tumour tissue than NP-free PSMA-targeted conjugates 64Cu-DOTA-mal-scFv-cys and 64Cu-DOTA-acetBr-scFv-cys.