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Medical Definition of Radioimmunodetection
1. Use of radiolabelled antibodies for diagnostic imaging of neoplasms. Antitumour antibodies are labelled with diverse radionuclides including iodine-131, iodine-123, indium-111, or technetium-99m and injected into the patient. Images are obtained by a scintillation camera. (12 Dec 1998)