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(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. |
| Previous Definitions: | radioisotope, radiolabeled, radiologic exam, radiologist, radiology | | Next Definitions: | radionuclide scanning, radiopharmaceutical, radiosensitization, radiosensitizer, radiosurgery |
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