Radiation treatment is a medical procedure used for the treatment of cancer and other diseases. It is also known as radiotherapy or radiation therapy. There are several synonyms for this term, including radiation therapy, radiotherapy, radiation oncology, external beam radiation, brachytherapy, and proton therapy. Radiation therapy uses high-energy X-rays or other types of radiation to destroy cancer cells or shrink tumors. It is often used in combination with other cancer treatments, such as chemotherapy and surgery. There are various types of radiation therapy available, including external beam radiation therapy, internal radiation therapy, and systemic radiation therapy. The type of radiation therapy used depends on the type and location of the cancer being treated.