The time integral of the equivalent dose rate in a particular tissue or organ that will be received by an individual following intake of radioactive material into the body by a Reference Person, where s is the integration time in years. (ICRP Publication 103, 2007)
The committed equivalent dose (H_T(τ)) in a tissue or organ T is defined by:
H_t(τ)= \int\limits_{t_0}^{t_0+τ} H_t(t)dt
ICRP Glossary entry - May 2019
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