L0_2016_Athens_Physics_Programme_V6

3024-3025 / 3107

Background
 both photons and neutrons can induce tumors
 biological effect of neutrons is higher than for photons 
for the same physical dose D [Gy=J/kg], more tumors with neutrons
biologically, 1 Gy in a photon beam  1 Gy in a neutron beam
Equivalent dose
Concept of Equivalent Dose
use Dequivalent instead of physical dose D
- unit of Dequivalent is Sievert (Sv)
- 1 Sv has the same tumor induction in all types of beams
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