AROI-ESTRO GYN Teaching Course

Definitions (upcoming definitions in the frame of adaptive thinking)

GTV = Gross Tumor Volume  Macroscopic tumor, visible clinically and with imaging

ICRU reports 50-83

CTV = Clinical Target Volume  Tissue volume that contains a GTV and/or subclinical microscopic malignant disease, which has to be eliminated

ITV

CTV

ITV = Internal target volume  Volume that accounts for internal inter- and intra- fraction motion and deformation of the CTV

GTV

Valid for the primary tumor: GTV-T, CTV-T

for lymph nodes: no GTV-N, CTV-E (elective nodal CTV) GTV-N, CTV-N