Dose Course 2018_Flipping book

calculation techniques – heterogeneity handling in Eclipse AAA:

build-up/down filtering to mitigate discontinuities

Doses will change too fast at material/tissue interfaces when just applying an effective depth correction. To model gradual changes at material interfaces, a correction is introduced based on a convolution using a build-up kernel along the depth direction.

Without correction

With correction

L Korhonen (2009) m PhD thesis , Department of Biomedical Engineering and Computational Science, Helsinki University of Technology