6. If 120 mCi of radicactive Geld-198 with half-ife 27 days is administered radiation therapy, what is the Gold-198 activity 3 weeks later if anone is dliminated fome body by biological means?
6. If 120 mCi of radicactive Geld-198 with half-ife 27 days is administered radiation therapy, what is the Gold-198 activity 3 weeks later if anone is dliminated fome body by biological means?
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Can you answer number 6?
Transcribed Image Text:4. The following reaction occurs ont
He+ He→¿B< #mch megy iselease
5. Potassium-40
undergoes both and decay. Determine the dughter mucleus in cach
case.
6. If 120 mCi of radicactive Gold-198 with half-life 27 days is administered te a patient r
radiation therapy, what is the Gold-198 activity 3 weeks later if none is dliminated fiom the
body by biological means? -
7. The decay rate of “C from a bone uncovered at a burial site is 126 daysimin, wherease
decay rate from a fresh bone of the same mass is 1610 decaysimin. Appronimately how old i
the uncovered bone?
&. Calculate the dose caused by a 70-mrad absorbed dese of the following types of radiation ja
x-rays (b) beta rays (c) protons (d) a particles and (e) heavy ions.
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