Answered

1-131 is a radioactive form of iodine that is used to aid in systemic radiation of thyroid cancer. Why is I-131 used in this treatment?

A. Iodine is used by the thyroid; therefore, the radioactive form would also travel to that area.
B. Iodine is required for DNA replication; therefore, it would be attracted to DNA of cancerous cells.
C. Iodine is required for all cancerous cells to continue to divide; therefore, it would travel to those cells.
D. Radioactive iodine is harmless to the patient.
E. Radioactive iodine will interfere with cancer cells in the thyroid and throughout the body.



Answer :

GinnyAnswer

Final answer:

Iodine-131 is used in thyroid cancer treatment due to its ability to target cancerous thyroid cells effectively.


Explanation:

Radioactive iodine-131 is used in the treatment of thyroid cancer because thyroid cells concentrate iodine, and cancerous thyroid cells are more aggressive in doing so. Using iodine-131 can localize the radiation in abnormal thyroid tissue, effectively targeting the cancer cells. This technique has shown to have a high therapeutic ratio for short-range radiation.


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