Radioactive iodine is a common well-accepted form for treating hyperthyroidism, cardiac dysfunction or thyroid carcinoma.
The thyroid gland accumulates the radioactive iodine. The radiation given off by this form of iodine decreases the function of the thyroid cells and inhibits their ability to grow. This is the desired medical effect and the reason you will be given this treatment.
The 131 iodine diagnostic scan is performed following the diagnosis and surgical treatment of papillary or follicular thyroid carcinoma. Images are taken of the whole body – front and back.