Brachytherapy for Prostate Cancer 2017

D(r,θ)=S k

Λ[G(r,θ)/G(r 0

,θ

0 )]g(r)F(r,θ)

S k = air kerma strength of the source

Λ= dose rate constant

G(r,θ)=geometry factor

g(r)=radial dose function

F(r,θ)=anisotropy function