412-413 / 1726
23
ITV-T LR and PTV-T LR
Maximum rectal filling at treatment planning scan: 40mm
“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
Review anatomy on treatment
planning images
Apply margin according to
predicted motion
Monitor on daily CBCT
Cervix region
most critical