from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A radioactive isotope of iodine widely used as a tracer in medical diagnosis.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun physics (medicine) The radioactive isotope of iodine, 13153I, having a half-life of 8 days; used as a medical tracer


from Wiktionary, Creative Commons Attribution/Share-Alike License

radio- +‎ iodine


  • Regarding the nuclear plants, Spiegel Online is showing a simulation of radioactive drift of I-131 (radioiodine) from the Viennese Central Institute for Meteorology and Geodynamics (ZAMG). News

  • The amounts of radioiodine are "very low concentrations" and should have "no impact on state drinking water supplies," the Department of Public Health said in a statement. Top Stories

  • The levels of radioiodine that's been measured in Washington state are extremely low.

    The Globe and Mail - Home RSS feed

  • According to Dr. McDermott, radioiodine exposure during pregnancy is contraindicated, but if there is inadvertent exposure, most likely during the first trimester, Propylthiouracil can be administered.

    Newswise: Latest News

  • Treatment usually involves a surgery to remove the lump, followed by a radioiodine pill, requiring a two to three day hospital stay because it produces some localized radioactivity.

    WIBW - HomePage - Headlines

  • We have shown successful therapeutic efficacy of combined MDR shRNA and hNIS radioiodine gene therapy using an adenoviral vector system in a mouse colon cancer model.

    Naturejobs - All Jobs

  • MDR1 shRNA and human NIS (hNIS) radioiodine gene therapy in a mouse colon xenograft model.

    Naturejobs - All Jobs

  • Patients receiving radioiodine as treatment for thyroid cancer are especially likely to develop salivary obstructions as the radioiodine concentrates within the glands. - Local News

  • "These results are in accordance with previous studies suggesting that hyperthyroidism and radioiodine therapy are associated with increased long-term vascular risk." - medical news plus CME for physicians

  • Thus, the results may not be generalizable to other populations or patients receiving radioiodine therapy. - medical news plus CME for physicians


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