Iodine-125 (125I) is used to treat, among other things, brain tumors and prostate cancer. It decays by gamma decay with a half-life of 54.90 days. Patients who fly soon after receiving 125I implants are given medical statements from the hospital verifying such treatment because their radiation could set off radiation detectors at airports. If the initial decay rate (or activity) was 532 μCi, what will the rate be after 389.0 days?How many months will it take for the decay rate to be 16.5% of it's initial value? Not sure how to set this problem up. Giving me a lot of trouble.
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Latest answer posted April 09, 2013 at 12:42:58 AM
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