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ESTRO IMRT course 2015
Adaptive Radiotherapy
Brussels October 8th, 2015
-10-
How large does the margin have to be?
M. van Herk et al. 2000: The probability of correct target dosage: dose-population
histograms for deriving treatment margins in radiotherapy.
IJROBP 47(4)
σ
σ
Σ
+Σ =
7.0 5.2
R
systematic setup errors
random setup errors
systematic errors are more
deleterious than random errors!
A typical ‘margin recipe’…: