- hyperthyroidism), most often due to Graves disease. For hyperthyroidism, Radioactive iodine is administered in capsule form on a one- time basis. It directly radiates thyroid tissues, thereby destroying them. It takes 8-12 weeks for the thyroid to become euthyroid (normal) after treatment. The majority of patients undergoing this treatment with radioactive iodine eventually become hypothyroid, which is easily treated using thyroid hormones (levothyroxine). Radioactive iodine should not be used during pregnancy or breast feeding. Radioactive iodine is the preferred initial therapy for the hyperthyroidism of Graves disease in North America while antithyroid drugs are used as the first line of treatment in most of the rest of the world. Radioactive iodine is also known as radioiodine.
* * *radioiodine.
Medical dictionary. 2011.
Look at other dictionaries:
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