Advanced Physics for Brachytherapy 2018

5. finite patient dimensions

Diff. phantoms,

Diff. phantoms

Hmsc in R=50cm

Hmsc in R=10cm

Kernel data are traditionally calculated in full scatter geometries (8mfp) This overestimates msc dose close to the edges of a bounded geometry

Differences could be lifted if a msc kernel calculated in a phantom of equal dimensions to the geometry was used.

Figure from: A. C. Tedgren et al. Phys. Med. Biol. 60 5313 (2015)