The branch of oncology that adopts controlled use of radiation to treat cancereither with an aim to cure or to reduce pain is known as Radiation Oncology. The process involves the use of megavoltage X-rays or radionuclides. Radiation Oncology, Radiation Therapy and Radiation Oncology Medical Physics are the three main methods involved in the treatment of cancer.

The use of technology is constantly improving Radiation Oncology. These improvements are evident in patients with cancer resulting in shorter treatments, higher cure rates, fewer side effects and better quality of life.