RTBC - radiation units and
calculations exam questions &
answers3
what is exposure and how is it measured? - ANSWERS-a way of measuring the number of
ionizaitons in air
-no special unit
-measured in coulombs/kg
what is air kerma and how is it measured? - ANSWERS-a measure of the energy of ionizaitons in
air
-kinetic energy released per unit of Mass
-measured in Gy
-Joule/kg
-1 J/kg = 1 Gy
what is absorbed dose and how is it calculated? - ANSWERS-measure of the dose absorbed by
the HCP or patient
-measured in Gy
-D = J/kg
what is equivalent dose and how is it calculated? - ANSWERS-a measure of the biological
damage from radiation in matter
-measured in Sv
-EqD = D = Wr
calculations exam questions &
answers3
what is exposure and how is it measured? - ANSWERS-a way of measuring the number of
ionizaitons in air
-no special unit
-measured in coulombs/kg
what is air kerma and how is it measured? - ANSWERS-a measure of the energy of ionizaitons in
air
-kinetic energy released per unit of Mass
-measured in Gy
-Joule/kg
-1 J/kg = 1 Gy
what is absorbed dose and how is it calculated? - ANSWERS-measure of the dose absorbed by
the HCP or patient
-measured in Gy
-D = J/kg
what is equivalent dose and how is it calculated? - ANSWERS-a measure of the biological
damage from radiation in matter
-measured in Sv
-EqD = D = Wr
