Tumor targeting of known sites of disease. Images obtained 20 minutes, 3 hours, and 44 hours after the administration of ¹¹¹In (5 mCi)/⁹⁰Y (15 mCi/m²)–DOTA-biotin. Gamma camera wholebody scans of patient no. 1 (anterior views) obtained at 20 minutes, 3 hours, and 44 hours after infusion of ¹¹¹In/⁹⁰Y-DOTA-biotin. Arrows are showing radionuclide localization to known sites of tumor involvement.