Question

Which of the following is used for treatment of thyroid cancer?

• A. U-238
• B. Ra-224
• C. C-14
• D. I-131

Answer 1

The correct option is D I-131

Iodine-131 (I-131) is an important radioisotope of iodine. Iodine-131, in higher doses, is used for ablation (surgical removal) of remnant thyroid tissue following a complete thyroidectomy (removal of the thyroid gland) to treat thyroid cancer. I-131 is also used in nuclear energy, medical diagnostic and treatment procedures, and natural gas production.

So, the correct answer is 'I-131'.