Cervix cancer =
on-line adaptive vs population-based margin
Bladder-based ITV
(Margin 38mm)
vs
Adaptive strategy
(library of plans
based on 10 pretreatment
CT + after 40Gy with
varying bladder filling
)
(Margin 7-10mm)
volume reduction
PTV : 48%
Bladder 5to 45%
Rectum 26% to 74%
03/01/13
Bondar M et al., IJROBP 2012