Physics, 11.01.2021 18:40, kianakilbourn8
Radioactive iodine (radioiodine) is given to patients with some forms of thyroid cancer in order to destroy the cancer cells. 131I has a half-life of 8 days. Women who have been treated with 131I are advised to not become pregnant for 180 days (approximately 6 months) to avoid the radioactive contamination of a developing fetus.
If a woman has been given a dose of 10 mCi (millicurie, a measurement of radiation), how much 131I will still be in her system when she can safely become pregnant?
A. 1.7 x 10-6 mCi
B. 22.5 x 10-6 mCi
C. There will be no iodine-131 left in her system after 180 days.
D. 3.125% of the original isotope
Answers: 3
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