Basic Treatment Planning

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)