663 / 1694
•
Uncertainties from delivery:
➢
Mis-registration on a given day (wrong alignment between beam
and average tumour position)
➢
Interplay effect
➢
Anatomical changes
How much does it matter?
•
Uncertainties from planning:
➢
Catching the tumour in a ”un-representative position”
➢
Under /over-estimating the tumour volume