583 / 1363
GEC-ESTRO target definitions (2)
•
HR CTV:
whole cervix (assumed residual tumor)
− Persistent GTV
− Always whole cervix
− Presumed extracervical tumor extension:
− Residual clinically edematous zones
− Residual grey zones on MRI
− No safety margins are added
− Dose high enough to sterilize macroscopic tumor
•
IR CTV:
significant microscopic disease at BT
− Encompasses HR CTV
− Safety margins (5 – 15 mm) depending on tumor spread
•
LR CTV:
presumed treated with EBRT, not treated with BT
Haie-Meder C. et al. Radiother Oncol 2005.