PO-0908 Determination of surface dose in pencil beam scanning proton therapy

ConclusionOur experiments indicate that a fluence based beam quality correction function for EBT3 films may be limited in its applications for intensity modulated proton therapy.At high LET there was also a tendency of the RE-LETd relation to differ for different initial beam energies and fluences.A single parameter may not be sufficient to represent beam quality with respect to film response.Current work in progress is to develop a formalism for RE of EBT3 film response.