Gynae BT 2017

Irradiation of normal tissue

• Difference in irradiated body volume of 1000cm3 in Inst-3! • Question of PTV margin – 5mm margin expands irradiated volume by 500cm3 – 10mm margin expands irradiated volume by 1000cm3 PTV margin 5mm PTV Body V43 Bowel V15 margin 10mm?

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