Gynae BT 2017

ITV-T LR and PTV-T LR

 “Standard” approach:  10-15mm ITV margin  5mm PTV margin  Total 15-20mm margin  Individualised approach:  Several treatment planning images: MRI, CT, full bladder, empty bladder

Cervix region most critical

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Review anatomy on treatment planning images Apply margin according to predicted motion

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Monitor on daily CBCT

Maximum rectal filling at treatment planning scan: 40mm

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