Radiation Oncology refers to the treatment of cancer patients using radiation, which could be X-ray, Gamma ray or high dose of radium. The hospitals that provide Radiation Oncology are equipped with state of the art Linear Accelerators, Simulator, High Dose Rate Remote after – loading Brachytherapy system, dedicated treatment planning computers, and Mould Room to fabricate lead shields and templates in house. Radiation is a special kind of energy carried by waves or a stream of particles originating from radioactive substances and delivered by special machines. These radioactive x-rays or gamma rays can penetrate the cell wall and damage the nucleus of the cell which prevents growth and division of cells. This also affects the normal cells but these cells recover more fully than cancer cells.