According to ICRUInternational Commission on Radiological Units and Measureme... Report 51 the doseMeasure of a radiation effect to be indicated more precisely... equivalent, H, is the product of Q and D at a point in tissue, where D is the absorbed doseThe absorbed dose D is the quotient of the average energy tr... and Q is the quality factorTerm of radiation dosimetry. The quality factor was introduc... at that point, thus
H = Q D.
The unit is J kg-1, the special name for the unit of doseMeasure of a radiation effect to be indicated more precisely... equivalent is sievertSpecial unit name for the organ dose and the effective dose;... (Sv).