Maria is concerned because she has been exposed to a small amount of radiation during an X-day. What is her doctor most likely to tell her!

Her doctor will say not to worry about it since a short amount of x-ray radiation is not dangerous at all.

If you're exposed to significant radiation, your thyroid will absorb radioactive iodine (radioiodine) just as it would other forms of iodine. The radioiodine is eventually cleared from the body in urine. If you take potassium iodide, it may fill "vacancies" in the thyroid and prevent the absorption of radioiodine.

Source: Mayo Clinic