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Home >Information for Patients > Dictionary Index
Dictionary of Cancer Terms
View in Spanish: Radionúclido
Radionuclide (RAY-dee-oh-NOO-klide)
An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable. Radionuclides may occur in nature or be made in a laboratory. In medicine, they are used in imaging tests and in treatment. Also called radioisotope.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.
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22 S. Greene Street, Baltimore, MD 21201
22 S. Greene Street, Baltimore, MD 21201
