491 / 1578
ITV from all phases
PTV = ITV + 5mm
ITV from 3 / 10 phases
PTV = ITV + 5mm
Gating
:
Reduction of motion amplitude
8.5mm ± 6.5m
to
1.4mm ± 0.7mm
Gating
:
Reduction of PTV volume
by 45%
Motion amplitude
PTV volume
Duty cycle
30 % !
Gating: free breathing / breath hold
Underberg
et al
IJROBP 2005
SBRT 2017 - D. Verellen