tc 99

The radioactive daughter, Tc 99, arising from decay of Tc 99m, gives trivial radiation dosage, even if complete retention is assumed, because the amount of radioactivity is reduced so greatly due to the long half-life of Tc 99 (2 × 10 5 γ). One millicurie Tc99m decays to 3.3 × 10 -9 mc Tc 99. Excretion of Tc 99m after administration of ... 99 aluminium bandung