Question

Name four types of medically used iodine.

Answer 1

Four types of medically used iodine are Iodine-123, Iodine-131, Iodine-125, and Iodine-129.

Step-by-step explanation:

Four types of medically used iodine are:

1. Iodine-123: Iodine-123 is commonly used in single-photon emission computed tomography (SPECT) imaging to evaluate thyroid disorders and certain brain disorders.
2. Iodine-131: Iodine-131 is used in the diagnosis and treatment of thyroid cancer. It is absorbed by the thyroid and emits radiation, which can be detected to image the thyroid or destroy cancerous cells.
3. Iodine-125: Iodine-125 is used in brachytherapy, a form of radiation therapy. It is inserted into or near tumors, where it delivers a high dose of radiation to the surrounding cancer cells.
4. Iodine-129: Iodine-129 is not used in medical imaging or treatment, but it is a commonly used radioisotope in environmental studies and as a tracer for studying ocean circulation.