I-131 Is a Radioactive Form of Iodine That Is Used

question 88

Multiple Choice

I-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) Radioactive iodine will interfere with cancer cells in the thyroid and throughout the body.
• C) Radioactive iodine is harmless to the patient.
• D) Iodine is required for DNA replication; therefore, it would be attracted to DNA of cancerous cells.
• E) Iodine is required for all cancerous cells to continue to divide; therefore, it would travel to those cells.

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