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Take home message:
IGRT for whole breast (+/- nodes)
•Imaging only in the beam direction will underestimate the
set up error
•No clear benefit of CBCT in terms of accuracy for “robust”
techniques (3D tangents)
but other considerations: workflow? SIB? IMRT?
•Surface image has interesting potential and properties (no
dose) but shouldn’t be the only modality for set-up (rotations,
DIBH…)