601 / 1311
PTV
PTV
GTV
CTV
GTV
CTV
Fang
et al.
IJROBP
2001;50:961-9.
Barker
et al.
IJROBP
2004;59:960-70.
Yang
et al.
IJROBP
2011;79:1096-103.
Height
et al
. J Med Imaging Radiat Oncol
2010;54:497-504.
Per-treatment GTV (CT) volume changes
(observational studies)
Reference
Radiotherapy
technique
Per-treatment
imaging time
Δ per-treatment volume/
pretreatment volume
Fang 2001
2DRT/3DCRT
Week 5
GTV-T: -62%
GTV-N: -76%
Barker 2004
2DRT/3DCRT/IMRT
3/week
GTV-T: -1.7%/day
GTV-N: -1.7%/day
Yang 2010
IMRT
Week 4-5
GTV
sum
:-36-47%
Height 2010
IMRT
Week 5
GTV-T: -50%
GTV-N: -74%
Per-treatment target volume changes