^99mTC has a half-life of 6.02 hours. It decays into ^99Tc by emitting a gamma ray, with energy 140keV for this problem, assume that ^99mTc is present in the body for 2 hours after being injected and then is immediately removed.
Already calculated:
total energy E released by decays in the 2 hours: 0.081J
if that amount was given to an 80kg man, and it stayed in his system for 2 hours, absorbed dose would be : 0.10 rad
Equivalent dose correlates strongly with the biological effects of radiation. Calculate the equivalent dose, keeping in mind that ^99mTc emits gamma rays. (answer in rems)
