Advanced Brachytherapy Physics - Vienna 2016

The problem …

• Let us start from the simplest case (point isotopic monoenergetic photon source in infinite medium of given composition) • If I know everything there is to know about the source and the medium can I calculate dose at a point i ? , …

i

prR over t, energy radiant or the rate energy radiant the calculate can i activity intial from r R )ir exp( 2 ir 4π pr = prΨ point, any at fluence energy calculate can i R from   i i i prΨ)μ(=T point, any at TERMA the calculate can iΨ from TERMA of fraction the calculate also can i i ρ particles charged of energy kinetic to ed transferr is that

ρ enμ (= prK

μ enμ

point, any at KERMA

( prΨ) 



prΤ)

i

i

i