144 / 815
Definition of volumes depends on when imaging is done
ICRU: “… recommended to indicate the dose and/or the time
when the GTV has been evaluated/measured…”
Volumes in ICRU78 and ICRU83
GTV-T (CT, 20 Gy)
GTV-T (MRI T2, fat sat, 20 Gy)
GTV-T (FDG-PET, 20 Gy):
ICRU Report No.83 (2010)