Dose Course 2018_Flipping book

TPS - general limitations

Lack of beam data to drive dose calculations outside the largest field

Main TPS concern is planning dose to target (and saving nearby risk organ)

– Dose in the beam channel and penumbras modeled correctly…

– …scatter usually OK but…

– …less focus on accurate leakage outside of penumbra, far away scatter & neutrons

Peripheral dose considered as a radiation protection issue

– TPS designed for individual patient contexts (radiation protection to population)