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What is sodium iodide I-131?

Pronunciation: /ˈsoʊdiəm ˈaɪəˌdaɪd aɪ wən ˈhənərd ənd thirty-one*/

sodium iodide I-131

Definition

A radiopharmaceutical containing the beta- and gamma-emitting radioisotope I-131. After absorption, the iodide is distributed through the extracellular fluid of the body and accumulates in the thyroid gland, thereby allowing the imaging of the thyroid.