Tumor targeting of known sites of disease. Image obtained 46 hours after the administration of ¹¹¹In (5 mCi)/⁹⁰Y (15 mCi/m²)–DOTA-biotin. Gamma camera whole-body scans of patient no. 3 (anterior view on left and posterior view on right) obtained 46 hours after infusion of ¹¹¹In/⁹⁰Y-DOTA-biotin. Arrows are showing radionuclide localization to known sites of tumor involvement.