Physics Bucharest 2017
Prostate margins – current situation Erasmus MC
daily kV/MV imaging, on-line correction of marker COM set-up error (4 impl anted gold markers)
M clin 5 5 5
σ pre
Σ pre
σ post
Σ post
M pre
M post
LR AP 0.7 0.5 1.8 1.7 CC 0.7 0.5 1.9 1.4
1.5 4.7 1.5 4.1
pre:
derived from lateral kV acquired immediately after kV/MV based on-line set-up correction derived from lateral kV acquired immediately after delivery last beam
post:
Differences between pre and post due to intrafraction motion
Mutanga, Heijmen, et al, IJROBP, 2011, 2012
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