Question

6 of 18 Constants Jack underwent radiation therapy using a beam of neutrons to treat a skin cancer on his hand. He received a dose equivalent of 3.0 Sv that was absorbed in 26 g of tissue. The relative biological effectiveness (RBE) of these neutrons is 12. What absorbed dose of radiation did Jack receive? Part A What absorbed dose of radiation did Jack receive? Express your answer in grays to two significant figures. View Available Hint(s) Gy Previous Answers Incorrect; Try Again; 9 attempts remaining Part B What was the total energy of the absorbed radiation?Suppose Jill, also being treated for skin cancer, received the same absorbed dose, but from an electron beam (beta particles) with an RBE of 1.4. What dose equivalent did she receive?

Answer 1

The relative biological effectiveness(RBE) is ratio of biological effectiveness of one type of ionizing radiation relative to another, given the same amount of abserved energy. The RBE is an empirical value that varies depending on the type of ionizing radiation and energies involved.