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Encyclopedia > Equivalent dose

The equivalent dose is a measure of the radiation dose to tissue where an attempt has been made to allow for the different relative biological effect of different types of radiation. Equivalent dose is therefore a less fundamental quantity than radiation absorbed dose, but is more biologically significant. Equivalent dose has units of sieverts.


Equivalent dose (E) is calculated by treating the absobed dose (D) with a radiation type dependent quality factor (Q):


E = DQ


where Q is 1 for x-rays, gamma-rays and beta-particles, but higher for protons, neutrons, alpha particles etc.


  Results from FactBites:
 
Sievert - Wikipedia, the free encyclopedia (540 words)
The sievert (symbol: Sv) is the SI derived unit of dose equivalent.
The equivalent dose to a tissue is found by multiplying the absorbed dose, in grays, by a dimensionless "quality factor" Q, dependent upon radiation type, and by another dimensionless factor N, dependent on all other pertinent factors.
The collective dose that a population is exposed to is measured in "man-sieverts" (man.Sv).
Equivalent dose - definition of Equivalent dose in Encyclopedia (121 words)
The equivalent dose is a measure of the radiation dose to tissue where an attempt has been made to allow for the different relative biological effect of different types of radiation.
Equivalent dose is therefore a less fundamental quantity than radiation absorbed dose, but is more biologically significant.
Equivalent dose (E) is calculated by treating the absobed dose (D) with a radiation type dependent quality factor (Q):
  More results at FactBites »

 
 

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