Radiation Oncology encompasses all aspects of research that impacts on the treatment of cancer using radiation. Radiation can be given as a curative modality, either alone or in combination with surgery and/or chemotherapy. It may also be used palliatively, to relieve symptoms in patients with incurable cancers. The Radiotherapy/radiation therapy is broadly segmented into Teleradiotherapy, Brachy-radiotherapy and Metabolic Radiotherapy. Nuclear medicine is a branch of medicine that uses radiation to provide information about the functioning of a person's specific organs or to treat disease. Medical imaging is the technique and process of creating visual representations of the interior of a body for clinical analysis and medical intervention, as well as visual representation of the function of some organs or tissues.