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Radiation therapy uses high-energy radiation to shrink tumors and kill cancer cells. -X-rays, -gamma rays, -charged particles. are types of radiation used for cancer treatment. The radiation may be delivered by. 1. a machine outside the body (external-beam radiation therapy)
Energy emitted from a source is generally referred to as radiation. Ionizing Radiation. Ionizing radiation is radiation with enough energy so that during an interaction with an atom, it can remove tightly bound electrons from the orbit of an atom, causing the atom to become charged or ionized. Here we are concerned with only one type of radiation, ionizing radiation, which occurs in two forms - waves or particles. More information on Non-Ionizing radiation. Forms of electromagnetic radiation.