Iodine-123
iodine-123 n.
A radioisotope of iodine with a pure gamma emission and a physical half-life of 13.1 hours, used for studies of thyroid metabolism.
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- Iodine-125
iodine-125 n. A radioisotope of iodine with a half-life of 60 days that is used as a tracer in thyroid studies and as therapy in hyperthyroidism.
- Iodine-131
noun, Chemistry. 1. a radioactive isotope of iodine having a mass number 131 and a half-life of 8.6 days, used in the diagnosis and treatment of disorders of the thyroid gland. iodine-131 n. A radioisotope of iodine that emits beta and gamma rays, has a half-life of 8.05 days, and is used as a tracer […]
- Iodine-fast
iodine-fast adj. Of or relating to hyperthyroidism unresponsive to iodine therapy.
- Iodine-induced hyperthyroidism
iodine-induced hyperthyroidism n. See Jod-Basedow phenomenon.
- Iodine stain
iodine stain n. A stain used to detect a variety of polysaccharides, such as cellulose, chitin, and glycogen, in which potassium iodide reacts with starch to produce a blue color.