386 / 881
Lung planning target volume concepts
GTV/
ITV
CTV
PTV
Convention
Free-breathing
CT scan
Time-
averaged
mean
position
Internal
Target
Volume
Motion
Gating
@ exhale
Mid-
Ventilation
/Position
Crap
Too large
Margin ?
|
|
386 / 881
Lung planning target volume concepts
GTV/
ITV
CTV
PTV
Convention
Free-breathing
CT scan
Time-
averaged
mean
position
Internal
Target
Volume
Motion
Gating
@ exhale
Mid-
Ventilation
/Position
Crap
Too large
Margin ?