radioimmunodiagnostics

(RAY-dee-oh-IH-myoo-noh-DY-ug-NOS-tix) The use of radiolabeled monoclonal antibodies to help diagnose diseases, including cancer. The radiolabeled monoclonal antibody locates and binds to substances in the body, including cancer cells. Images are made using a special machine that detects the radioactive monoclonal antibody.