The study and use of X-rays, radioactive materials, and other ionizing radiations for medical purposes, especially for diagnosis (diagnostic radiology) and the treatment of cancer and allied diseases (seeradiotherapy).
Chemical Engineering
The study and use of X-rays, radioactive materials, and other ionizing radiations for medical purpose especially for the diagnosis and treatment of cancer and associated diseases.
Biology
The study and use of X-rays, radioactive materials, and other ionizing radiations for medical purposes, especially for diagnosis (diagnostic radiology) and the treatment of cancer and allied diseases (therapeutic radiology or radiotherapy).