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Robust beam arrangement
dose homogeneity:
choose beam angles
avoiding
large
density interfaces
along the
beam axis
range uncertainty:
avoid
placing
Bragg
peaks proximal to
critical
OARs
o
beam incidence parallel to OARs
o
spot positioning margins/restrictions around
OARs
Ammazalorso et al. Radiat Oncol 9 (2014)