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Dose calculation – AAPM-TG43
g(r): The radial dose function that considers the distance dependence
of absorption and scatter of the photon rays in the water medium
along the transversal axis, that is the y-axis or equivalently for
θ =90
°
. g(r) is a dimensionless quantity.
It is always g(r=1cm) = 1.00
!
g(r)