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1.
Review aspects of beam modelling on treatment planning systems
(TPS) that play major role on the calculation of dose in plans
comprising of small MV photon beams:
•
finite size of beam source (also referred to as
focal spot
)
•
jaw and MLC leaf edges
•
resolution: influence of voxels size (calculation grid)
•
Inhomogeneities
2.
Discuss examples of implementations on modern TPSs
Learning objectives
ICRU Report 83, Vol 10 (1), 2010