Radiation therapy, radiation oncology, or radiotherapy, sometimes abbreviated to XRT, is the medical use of ionizing radiation, generally as part of cancer treatment to control malignant cells. Radiation therapy is commonly applied to the cancerous tumor because of its ability to control cell growth. Ionizing radiation works by damaging the DNA of exposed tissue, furthermore, it is believed that cancerous cells may be more susceptible to death by this process as many have turned off their DNA repair machinery during the process of becoming cancerous...