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Margins are the issue !!!!
Systematic and Random error
for prostate treatments
-5
0
5
10
15
20
(mm)
Conventional
IR DRR Markers Robotics
AZVUB, Bruxelles
Stereoscopic kV
CTV +
10mm
except LR (
6mm
) : DRR registration on bony structures
CTV + 5mm except LR (3mm ): implanted radio-opaque markers