In vivo PET/CT imaging showed specific uptake of [64Cu]Cu-NKp30Ab in NKp30-expressing Hela tumor xenografts (15.2 ± 4.5 %ID/g) in comparison to NKp30-negative wild-type Hela-controls (5.8 ± 1.9 %ID/g). Here, NCR3 is linked to neoplasm.