A 55-kg patient is to be given a medical test involving
Chapter 31, Problem 76(choose chapter or problem)
A 55-kg patient is to be given a medical test involving the ingestion of (Section 317) which decays by emitting a 140-keV gamma. The half-life for this decay is 6 hours. Assuming that about half the gamma photons exit the body without interacting with anything, what must be the initial activity of the Tc sample if the whole-body dose cannot exceed 50 mrem? Make the rough approximation that biological elimination of Tc can be ignored.
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