112 / 1542
Reductions in
systematic + random
prostate displacements
derived from verification measurements
0
20
40
60
80
100
0
5
10
15
20
25
3D displacement per fraction (systematic + random; mm)
Cumulative frequency (%)
No on-line corrections
SGT on-line corrections
3D daily displac ment
(sy tematic + r om)
m
De Boer, Mutanga, Heijmen et al., 2007