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Proton beam radiation therapy
Pronunciation
Definition 1
A type of radiation therapy that uses streams of protons (tiny particles with a positive charge) to kill tumor cells. This type of treatment can reduce the amount of radiation damage to healthy tissue near a tumor. It is used to treat cancers of the head and neck and organs such as the brain, eye, lung, spine, and prostate. Proton beam radiation is different from x-ray radiation. (NCI Dictionary)
Definition 2
A type of external beam radiation therapy using a beam of protons. It has the advantage of precisely localizing the radiation dose on the targeted tissue and avoiding damage to the healthy surrounding tissues. (NCI Thesaurus)
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