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σ
bone
Σ
bone
σ
int
Σ
int
σ
tot
Σ
tot
M
cal
LR 1.6 1.3 0.6 0.5 1.7 1.4
4.0
AP 2.2 1.5 2.8 2.5 3.6 2.9
8.3
CC 1.5 1.4 2.5 2.7 2.9 3.0
8.1
cal
σ7.0 Σ2 M
Prostate margins – historic example Erasmus MC
i, tot
i, tot
i
2
i int,
2
i,
bone
i, tot
σ
σ
σ
2
i int,
2
i,
bone
i, tot
Σ
Σ Σ
(formula by Stroom et al: 2Σ instead of 2.5Σ)
Stroom&Heijmen
R&O 2002
Stroom, Heijmen, et al., R&O, 1999