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5. finite patient dimensions
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)
Diff. phantoms,
Diff. phantoms
Hmsc in R=50cm
Hmsc in R=10cm