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Surrogate value: COM Single Visicoil marker vs. COM GTV
In Lung, for large amplitudes (> 15 mm p2p):
Exhale
Stable
Mid.
Artefact
4D CT Artefacts
Liver
Lung
MR fusion
PET-CT fusion
Multi-modal delineation
on one 4D CT phase
+ RIGID propagation
based on fiducial marker
Patient specific pre-treatment QA
•
Verifying if marker motion is appropriate surrogate of tumour motion
SBRT 2015 - D. Verellen
43