Problem: Fluorine-18 undergoes positron emission with a half life of 1.10x 10  2 minutes. If a patient is given a 248 mg dose for a PET scan, how long will it take for the amount of fluorine-18 to drop to 83 mg? (assume that none of the fluorine is excreted from the body) A. 211 minutes B. 99 minutes C. 300 minutes D. 132 minutes E. 174 minutes

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Problem Details

Fluorine-18 undergoes positron emission with a half life of 1.10x 10  2 minutes. If a patient is given a 248 mg dose for a PET scan, how long will it take for the amount of fluorine-18 to drop to 83 mg? (assume that none of the fluorine is excreted from the body)

A. 211 minutes

B. 99 minutes

C. 300 minutes

D. 132 minutes

E. 174 minutes

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