Programs that treat people who have a particular illness or condition through the application of chemical reagents which have a specific and toxic effect upon the disease-causing organism, or through the use of radioactive substances including radioactive isotopes and ionizing radiation to kill diseased cells. Included are radioactive implants, x-ray radiation therapy and supervoltage and megavoltage treatments with specialized equipment including cobalt units, linear accelerators with or without electron team therapy capability, betatrons and van de Graff machines.
Programs that are staffed by specialists who have expertise in the therapeutic utilization of radiant energy and its modifiers in the study and management of disease. Radiologists principally read x-rays but may also be certified to utilize some nuclear technology which involves the analysis and imaging of radionuclides and radiolabelled substances in vitro and in vivo for diagnosis and the administration of radionuclides and radiolabelled substances for the treatment of disease, especially malignant tumours.
The above terms and definitions are part of the Taxonomy of Human Services, used here by permission of INFO LINE of Los Angeles.