Changes

=== from [[ICRP Publication 131129]], 2015 === The tissue-weighted sum of the equivalent doses in all specified tissues and organs of the body given by the expression: <math>E = \sum_T w_T H_T</math> where <math>H_T</math> is the equivalent dose in a tissue or organ <math>T</math>, and <math>w_T</math> is the tissue weighting factor. The SI unit for effective dose is sievert (Sv) equal to J kg^-1.