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07-23-2009, 04:10 AM
Radiotherapy is also known as radiation therapy, radiation oncology and XRT. It is used for treating cancer, thyroid disorders and some blood disorders. Approximately 40% of cancer patients undergo some kind of radiotherapy. It involves the use of beams of high-energy X-rays or particles (radiation) to destroy cancer cells. Radiotherapy works by damaging the DNA inside the tumor cells, destroying their ability to reproduce.
More... (http://www.medicalnewstoday.com/articles/158513.php)
More... (http://www.medicalnewstoday.com/articles/158513.php)