radioiodine


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Related to radioiodine: radioiodine uptake

radioiodine

 [ra″de-o-i´o-dīn]
any radioactive isotope of iodine; of the nine isotopes, iodine 123, iodine 125, and iodine 131 are the most commonly used in diagnosis and treatment of benign and malignant diseases of the thyroid gland and in scintiscans of organs such as the lung, liver, and kidney. Called also radioactive iodine.
radioiodine uptake test one of the most common thyroid function tests; 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 supplements, contrast media, medications, or antiseptics may not be good candidates for this test.

ra·di·o·i·o·dine

(rā'dē-ō-ī'ō-dīn),
A radioactive isotope of iodine, for example, 123I.

radioiodine

/ra·dio·io·dine/ (-i´o-dīn) any radioactive isotope of iodine, particularly 123I, 125I, and 131I; used in diagnosis and treatment of thyroid disease and in scintiscanning.

radioiodine

(rā′dē-ō-ī′ə-dīn′)
n.
A radioactive isotope of iodine widely used as a tracer in medical diagnosis.

radioiodine

[rā′dē·ō·ī′ədīn]

radioactive iodine

Any of the radionuclides of iodine, the most commonly used of which is beta- and gamma-emitting 131I, with a half-life of 8 days. It is used clinically as an implant for treating thyroid cancer and hyperactivity, and for scintigraphy of other organs. The gamma-emitting 125I has a half-life of 59.4 days and has been used in bioassays, nuclear medicine imaging and in radiation oncology as brachytherapy to treat prostate cancer and brain tumours.

radioiodine

any radioactive isotope of iodine.

radioiodine therapy
see iodine-131.
radioiodine uptake t
131I or 125I are used by oral or intravenous administration as a test of thyroidal function.
References in periodicals archive ?
Dr Shah Numani, consultant Nuclear Medicine and PET/CT, who is American Board Certified in Nuclear Medicine, said: "Previously, we were able to administer low dose radioiodine for non cancerous thyroid diseases and now we can provide total care to thyroid cancer patients.
Radical resection is unlikely for large metastases; but surgery may be of help in reducing tumor mass to allow more effective action of radioiodine therapy (8).
Exposure to radioiodine also occurs during medical ablative therapy for thyroid disease and subsequent outcomes have been studied (de Vathaire et al.
Following surgical clearance, radioiodine scanning is necessary; iodine-131 ablation should be performed onlywhen the pathologic characteristics so demand.
Worrying about a few additional hits from a stray radioiodine atom coming across the Pacific Ocean from Japan, when the next day we U.
Determination of the optimal minimum radioiodine dose in patients with Graves' disease: a clinical outcome study.
These strategies include varying fixed doses as well as doses calculated on thyroid size and radioiodine uptake.
In a typical clinical scenario, the patient with well-differentiated thyroid cancer undergoes total thyroidectomy, followed in most cases by radioiodine ablation of the thyroid remnant.
Radioiodine was used as part of the original treatment, whereas external radiation therapy was used to control symptoms, principally at presentation.
Radioiodine is indicated for the great majority of patients; it is usually given for 4 to 12 weeks after surgery, both to destroy any remnant thyroid tissue and to identify (through imaging) and treat any metastatic disease (17).
During the study, the researchers administered radioiodine therapy to 57 patients, and, afterwards, a SPECT-CT camera was rotated around the patients at a variety of angles to capture where the radioactivity was occurring.