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Why is delineation important?
•
Radiotherapy planning is nowadays mostly based on
delineation
•
Constraints for dose distribution are used
•
DVH are calculated based on the contours
•
Field arrangements are becoming more complex
•
An error in contouring will therefore translate in a
systematic
error
all along the treatment and may have consequences:
➢
Jeopardizing treatment efficacy
➢
Impacting treatment toxicity