ESTRO PT 2018

Proton Therapy – whole breast with boost following lumpectomy

“en face” proton field

Set-up definition

CTV = conventional definition except exclusion of internal chestwall of ribs and intercostal muscles if clinically appropriate

PTV = Lateral field edge = set up variability (approx. 5 mm) Distal edge: CTV + 2.5% range uncertainty + 2mm

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