Proposal of 99 mTc carbonyl-labeled and active targeted nanostructured lipid carriers as a multifunctional system. Cytotoxicity and fluorescence imaging studies for nanoparticles were evaluated on lung, cervical and breast cancer cell lines. In vitro cell binding studies were performed for radiolabeled carrier system. Tissue distribution of 99 mTc carbonyl-labeled nanoparticles was investigated on female Wistar Albino rats by Biodistribution and gamma imaging studies.