What isotopes of iodine are used in medicine?
Two isotopes of iodine (123I and 131I) are clinically useful for imaging and may be administered as iodide. Iodine-123 has a 13.2-hour half-life and decays by electron capture to tellurium-123 (123Te). The photons emitted are 28-keV (92%) and 159-keV (84%) gamma rays.
What are the advantages of using the iodine-131?
Summary: The benefits of I-131 remnant ablation include: [1] facilitating the interpretation of subsequent serum thyroglobulin levels, [2] increasing the sensitivity of detection of locoregional and/or metastatic disease on subsequent follow-up radioactive iodine whole-body scans, [3] maximizing the therapeutic effect …
What are iodine isotopes used for?
The radioactive isotope iodine-123 is considered the agent of choice for brain, thyroid, and renal imaging and uptake measurements. Iodine-125 is used as a cancer therapeutic, and as a brain, blood, and metabolic function diagnostic. Iodine-131 is used as a brain, pulmonary, and thyroid diagnostic.
How is iodine-123 used in medicine?
Sodium Iodide I-123 is a radioactive isotope of iodine used in nuclear medicine for the diagnostic study of thyroid disease. Following oral administration, I-123 is absorbed through the gastrointestinal tract and is taken up by the thyroid gland.
How is radioactive iodine used in medicine?
Radioactive iodine (I-131), an isotope of iodine that emits radiation, is used for medical purposes. When a small dose of I-131 is swallowed, it is absorbed into the bloodstream in the gastrointestinal (GI) tract. It is concentrated from the blood by the thyroid gland, where it begins destroying the gland’s cells.
How effective is radioactive iodine treatment?
Conclusion: Radioactive iodine treatment is an effective modality for definitive treatment of hyperthyroidism with long-term cure approaching 80%. Response rate was not related to gender, etiology or RAI dosage.
How does radioactive iodine therapy work?
Radioactive iodine is an effective type of treatment for cancer of the thyroid gland. This is because the radioactive iodine from the drink or capsule is absorbed into your body and picked up by the thyroid cancer cells, even if they have spread to other parts of the body. The radiation then destroys the cancer cells.
What is iodine ablation?
What is radioiodine ablation? Radioiodine ablation is radiation therapy in which radioactive iodine is administered to destroy or ablate residual healthy thyroid tissue remaining after thyroidectomy.
What is the difference between iodine 123 and iodine-131?
Iodine, in the form of iodide, is made into two radioactive isotopes that are commonly used in patients with thyroid diseases: I-123 (harmless to thyroid cells) and I-131 (destroys thyroid cells. RAI is safe to use in individuals who have had allergic reactions to seafood or X-ray contrast agents.
