Difference between revisions of "Equivalent dose"
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The equivalent dose in an organ or tissue is given by: | The equivalent dose in an organ or tissue is given by: | ||
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<math> | <math> | ||
H_T = \displaystyle \sum_{R} w_RD_{R,T} | H_T = \displaystyle \sum_{R} w_RD_{R,T} | ||
</math> | </math> | ||
| − | |||
where D<sub>R,T</sub> is the mean absorbed dose from radiation R in a tissue or organ T, and w<sub>R</sub> is the radiation weighting factor. The SI unit of equivalent dose is joule per kilogram (J/kg<sup>-1</sup>), and its special name is sievert (Sv). | where D<sub>R,T</sub> is the mean absorbed dose from radiation R in a tissue or organ T, and w<sub>R</sub> is the radiation weighting factor. The SI unit of equivalent dose is joule per kilogram (J/kg<sup>-1</sup>), and its special name is sievert (Sv). | ||
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The equivalent dose to a tissue or organ is defined as: | The equivalent dose to a tissue or organ is defined as: | ||
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<math> | <math> | ||
H_T = \displaystyle \sum_{R} w_RD_{R,T} | H_T = \displaystyle \sum_{R} w_RD_{R,T} | ||
</math> | </math> | ||
| − | + | ||
where 𝑤𝑅 is the radiation weighting factor for radiation type R, and 𝐷𝑅,𝑇 is the organ absorbed dose from radiation type R in a tissue or organ 𝑟𝑇 of the Reference Adult Male or the Reference Adult Female. As 𝑤𝑅 is dimensionless, the SI unit for the equivalent dose is the same as for absorbed dose, J kg-1, and its special name is sievert (Sv). | where 𝑤𝑅 is the radiation weighting factor for radiation type R, and 𝐷𝑅,𝑇 is the organ absorbed dose from radiation type R in a tissue or organ 𝑟𝑇 of the Reference Adult Male or the Reference Adult Female. As 𝑤𝑅 is dimensionless, the SI unit for the equivalent dose is the same as for absorbed dose, J kg-1, and its special name is sievert (Sv). | ||
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The equivalent dose to a tissue or organ is defined as: | The equivalent dose to a tissue or organ is defined as: | ||
| − | + | ||
<math> | <math> | ||
H_T = \displaystyle \sum_{R} w_RD_{R,T} | H_T = \displaystyle \sum_{R} w_RD_{R,T} | ||
</math> | </math> | ||
| − | + | ||
where 𝑤𝑅 is the radiation weighting factor for radiation type R, and 𝐷𝑅,𝑇 is the organ absorbed dose from radiation type R in a tissue or organ 𝑟𝑇 of the Reference Adult Male or the Reference Adult Female. As 𝑤𝑅 is dimensionless, the SI unit for the equivalent dose is the same as for absorbed dose, joule per kilogram (J kg-1) and its special name is sievert (Sv). | where 𝑤𝑅 is the radiation weighting factor for radiation type R, and 𝐷𝑅,𝑇 is the organ absorbed dose from radiation type R in a tissue or organ 𝑟𝑇 of the Reference Adult Male or the Reference Adult Female. As 𝑤𝑅 is dimensionless, the SI unit for the equivalent dose is the same as for absorbed dose, joule per kilogram (J kg-1) and its special name is sievert (Sv). | ||
Revision as of 19:26, 12 August 2021
The equivalent dose in an organ or tissue is given by:
[math] H_T = \displaystyle \sum_{R} w_RD_{R,T} [/math]
where DR,T is the mean absorbed dose from radiation R in a tissue or organ T, and wR is the radiation weighting factor. The SI unit of equivalent dose is joule per kilogram (J/kg-1), and its special name is sievert (Sv).
(ICRP Publication 123, 2013)
Return to Glossary
See also the ICRPaedia entry on absorbed, equivalent, and effective dose.
Previous glossary entries
from ICRP Publication 130, 2015
The equivalent dose to a tissue or organ is defined as:
[math] H_T = \displaystyle \sum_{R} w_RD_{R,T} [/math]
where 𝑤𝑅 is the radiation weighting factor for radiation type R, and 𝐷𝑅,𝑇 is the organ absorbed dose from radiation type R in a tissue or organ 𝑟𝑇 of the Reference Adult Male or the Reference Adult Female. As 𝑤𝑅 is dimensionless, the SI unit for the equivalent dose is the same as for absorbed dose, J kg-1, and its special name is sievert (Sv).
from ICRP Publication 133, 2016
The equivalent dose to a tissue or organ is defined as:
[math] H_T = \displaystyle \sum_{R} w_RD_{R,T} [/math]
where 𝑤𝑅 is the radiation weighting factor for radiation type R, and 𝐷𝑅,𝑇 is the organ absorbed dose from radiation type R in a tissue or organ 𝑟𝑇 of the Reference Adult Male or the Reference Adult Female. As 𝑤𝑅 is dimensionless, the SI unit for the equivalent dose is the same as for absorbed dose, joule per kilogram (J kg-1) and its special name is sievert (Sv).
