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Probabilistic treatment planning
PTV-based planning
•
One single CTV is delineated
•
A
margin
is added by the
planner to form PTV
•
Treatment planning is based
on PTV to ensure a certain
dose coverage probability for
the CTV
CTV-based planning
•
Multiple CTVs are delineated by
sampling known variations
•
Robust treatment planning to
account for
all CTV instances
•
Treatment planning is based
directly on dose coverage
histograms for the CTV