Equivalent dose.
The IRCP has introduced radiation weighting factor. It will modify the dose to reflect the relative effectiveness of the type of radiation causing biological damage.
The product of the absorbed dose and radiation weight factor is called equivalent dose. It is denoted by H.
H = D×Wr
Where. D= is the absorbed dose
Wr is the weighting factor for the radiation. The weighting factor is 1 for x-ray, gamma, and all of energies.
The SI unit of equivalent dose is sievert(Sv). 1 Sv= 1 J/ kg. The Rem is the special unit of equivalent dose
1Sv= 1000mSv
100 rem= 1000mSv
1 Sv= 100 reml