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plan evaluation
computer planning
delineation
image fusion
immobilisation
& imaging
Decision to
proceed with RT
Diagnosis
radiotherapy planning
treatment
Preparation for radiotherapy
Deconstructing cranial radiotherapy
patient
attendance
processes
delineation
•
target margins
GTV - CTV
CTV - PTV
internal margin
set u mar in
•
OAR margins
PRV
(planning organ at risk volume)