Physics Bucharest 2017

Prostate margins – historic example Erasmus MC

* 10 Gy boost

M clin 10/5* 10/0-5* 10/5*

σ

Σ

σ

Σ

σ

Σ

M cal

bone

bone

int

int

tot

tot

LR 1.6 1.3 0.6 0.5 1.7 1.4 AP 2.2 1.5 2.8 2.5 3.6 2.9 CC 1.5 1.4 2.5 2.7 2.9 3.0

4.0 8.3 8.1

CKVO Kassim, Heijmen et al. R&O 2009

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(formula by Stroom et al: 2Σ instead of 2.5Σ)

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Stroom, Heijmen, et al., R&O, 1999