2017_IGRT course book
How much does it matter?
• Uncertainties from planning: ➢
Catching the tumour in a ”un-representative position” ➢ Under /over-estimating the tumour volume
• Uncertainties from delivery: ➢
Mis-registration on a given day (wrong alignment between beam and average tumour position) ➢ Interplay effect ➢ Anatomical changes
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