Risk factor

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The relationship between the radiation dose and the likelihood of incurring a stochastic effect can be expressed as a risk factor i.e.

likelihood of incurring a stochastic effect = Dose (Sv) · Risk Factor (Sv−1)


Detriment adjusted nominal risk coefficient (10-2Sv-1) for stochastic effects after exposure to radiation at low dose rate.
 Exposed population Cancer Heritable effects Total
Present1 Publ. 60 Present1 Publ. 60 Present1 Publ. 60
  Whole 5.5 6.0 0.2 1.3 5.7 7.3
  Adult 4.1 4.8 0.1 0.8 4.2 5.6
      1 Values from ICRP Publication 103, Annex A.


For comparison with the older values still used in the literature, the 1991 ICRP risk factors for stochastic effects (ICRP 60) are shown below.

ICRP risk factors for stochastic effects (ICRP 60)


See Also... Biological Effect of Ionising Radiation, Effective dose, Equivalent dose, Committed effective dose, Committed equivalent dose


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