Physics Bucharest 2017
Volume definition-summary
• • •
GTV- demonstrable tumour CTV - GTV + subclinical tumour PTV - CTV + margin for uncertainties (internal margin & set-up margin)
IrV
TrV
PTV
CTV
GTV
•
TrV-
volume enclosed by
specified isodose
•
IrV- tissue volume receiving dose deemed significant in relation to normal tissue tolerance
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