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…)