Definition of "radiotherapy" []

• Treatment of disease with radiation, especially by selective irradiation with x-rays or other ionizing radiation and by ingestion of radioisotopes. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "As part of a curative approach to mesothelioma radiotherapy is also commonly applied to the sites of chest drain insertion, in order to prevent growth of the tumor along the track in the chest wall."
• "A new analysis has found that a considerable proportion of patients with end-stage or terminal cancer-related pain and other symptoms and to help patients maintain a good quality of life when long-term radiotherapy can ease pain, stop bleeding, and relieve pressure, even when the cancer cannot be controlled."
• "ViewRay was honored for its unique combination of medical imaging and radiotherapy, which is designed to improve the effectiveness of cancer treatments."