radioactive iodine

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• Radioactive iodine — An isotope of the chemical element iodine that is radioactive. Radioactive iodine is used in diagnostic tests as well as in radiotherapy of an hyperactive thyroid gland (hyperthyroidism), most often due to Graves disease. For hyperthyroidism,… …   Medical dictionary

• radioactive iodine — A radioactive form of iodine, often used for imaging tests or to treat an overactive thyroid, thyroid cancer, and certain other cancers. For imaging tests, the patient takes a small dose of radioactive iodine that collects in thyroid cells and… …   English dictionary of cancer terms

• radioactive iodine excretion test — noun radioactive iodine test that measures the amount of radioactive iodine excreted in the urine • Hypernyms: ↑radioactive iodine test …   Useful english dictionary

• radioactive iodine test — noun test of thyroid function in which the patient is given an oral dose of radioactive iodine 131 • Hypernyms: ↑diagnostic test, ↑diagnostic assay • Hyponyms: ↑radioactive iodine excretion test, ↑radioactive iodine uptake test, ↑RAIU …   Useful english dictionary

• radioactive iodine uptake test — noun radioactive iodine test that measures the amount of radioactive iodine taken up by the thyroid gland • Syn: ↑RAIU • Hypernyms: ↑radioactive iodine test …   Useful english dictionary

• radioactive iodine therapy — the administration of an estimated amount of the radioactive isotope iodine 131 as a drink in order to treat an overactive thyroid gland (see thyrotoxicosis). The iodine concentrates in the thyroid and thus delivers its beta radiation locally,… …   Medical dictionary

• radioactive iodine therapy — the administration of an estimated amount of the radioactive isotope iodine 131 as a drink in order to treat an overactive thyroid gland (see thyrotoxicosis). The iodine concentrates in the thyroid and thus delivers its beta radiation locally,… …   The new mediacal dictionary

• radioactive iodine uptake test — (for thyroid function) a known quantity of radioiodine is administered and 24 hours later the per cent is calculated that has been absorbed by the thyroid gland. Patients who have recently been exposed to iodine compounds, such as in dietary… …   Medical dictionary

• radioactive iodine uptake — (RAIU), radioiodine uptake uptake of radioiodine from the blood by the thyroid gland; see under test …   Medical dictionary

• Iodine — (IPAEng|ˈaɪədaɪn, ˈaɪədɪn, or IPA|/ˈaɪədiːn/; from el. ιώδης iodes violet ), is a chemical element that has the symbol I and atomic number 53. Naturally occurring iodine is a single isotope with 74 neutrons. Chemically, iodine is the least… …   Wikipedia

• Iodine-129 — (129I) is a radioisotope of iodine. Formation and decay129I is primarily formed from the fission of uranium and plutonium in nuclear reactors. Significant amounts were released into the atmosphere as a result of nuclear weapons testing in the… …   Wikipedia