Category: R

  • Radioligand

    A molecule, especially an antigen or antibody, with a radioactive tracer attached to it.  

  • Radioimmunotherapy

    The use of radioactively labeled monoclonal antibodies to treat malignancies, e.g., breast cancers, non-Hodgkin’s lymphoma, and prostate cancer. The monoclonal antibodies selectively bind with antigens on the tumor cells and deliver a dose of cell-killing radiation directly to those cells.  

  • Radioimmunosorbent test

    Use of radioimmunoassay to measure the immune globulin E (IgE) antibody in serum.  

  • Radioimmunoguided surgery

    The use of tumor-specific, radioactively labeled monoclonal antibodies to detect and stage cancers and distinguish malignant tissue from surrounding normal tissue. This improves the management of surgical tumors.  

  • Radioimmunoelectrophoresis

    Electrophoresis involving the use of a radioisotope-labeled antigen or antibody. An autoradiograph is taken of the electrophoretic pattern produced.  

  • Radioimmunodiffusion

    A method of studying antigen-antibody interaction by use of radioisotope-labeled antigens or antibodies diffused through a gel.  

  • Radioimmunity

    Apparent decreased sensitivity to radiation that may follow repeated radiation therapy.    

  • Radioguided surgery

    The use of radionuclides, such as isotopes of technetium, to locate lymph nodes or other tissues to excise during an operation.  

  • Radiofrequency identification

    A method of labeling a drug or device with a unique electronic code to ensure that the object has been manufactured, stored, distributed, inventoried, and marketed legitimately. RFID devices provide electronic tags to prevent adulteration, counterfeiting, or theft of health care-related products.  

  • Radioencephalography

    The recording of radio waves transmitted from the brain to a receiver but without electrodes being placed on the scalp.