IMRT

adapted from Ahnesjö and Aspradikis 1999 (PMB 44(11))

Photons from Target

charged particle kinetic energy photon radiant energy

deposited energy

air

primary collimator, flattening filter , leaves&jaws

contaminant electrons

energy deposited by contaminant electrons

secondary photons (head scatter)

primary photons

scattered primary photons

scattered secondary photons

secondary charged particles

primary charged particles

charged particles from scattered prim. photons

charged particles from scattered sec. photons

deposited secondary energy

deposited primary energy

Bremsstrahlung and annihilation photons

deposited scatter energy

deposited scatter energy

Bremsstrahlung and annihilation photons

charged particles from Bremsstrahlung and annihilation photons

Bremsstrahlung and annihilation energy deposited

Bremsstrahlung and annihilation energy deposited

charged particles from Bremsstrahlung and annihilation photons