A small amount of radioactive solution containing the isotope 24Na is injected to a patient in a hospital. The activity of the solution at the injection moment is Ao = 2000 Bq. After 5 hours the activity of 1 cm of blood is A = 0.27 Bq. The half-life of the radioisotope is 15.3 hours. a) Find the total blood volume of the patient. (The solution is stored in the blood and is not transferred to tissue). b) At each radioactive decay one electron of 1.39 MeV and two gamma photons of 2.76 MeV and 1.38 MeV are released. Calculate the equivalent dose received by the patient during this treatment. Consider that all electrons are absorbed in the tissue, but only 50% of the gamma photons. Consider RBE = 1. The mass of the patient is 70 kg.