| product of D and Q at a point in tissue, where D is the absorbed dose, Q is the quality factor at that point |
H = D Q
Note 1 to entry: This quantity is expressed in J kg−1 and the special name for the unit of dose equivalent is the sievert (Sv).
Note 2 to entry: The values of Q are specified by the International Commission on Radiological Protection (ICRP). For beta, X, and gamma radiation Q is taken to be equal to unity for external radiation.
Note 3 to entry: The dose equivalent should not be taken as the equivalent dose to a tissue or an organ. It is a separate radiation protection quantity.
Note 4 to entry: This entry was numbered 393-14-72 in IEC 60050-393:2003.