Changes

where <math>E_{R,i}</math> is the energy in joules of the i^th radiation of type <math>R</math> emitted in nuclear transformations of the radionuclide (J); <math>Y_{R,i}</math> is the yield of the i^th radiation of type <math>R</math> per nuclear transformation [(Bq Ss)^-1]; <math>w_R</math> is the radiation weighting factor for radiation type <math>R</math>; and <math>\phi (r_T \leftarrow r_s, E_{R,i})</math> is the specific absorbed fraction defined as the fraction of energy <math>E_{R,i}</math> of radiation type <math>R</math> emitted within the source region <math>r_S</math> that is absorbed per mass in the target region <math>r_T</math> (kg^-1).