In-room imaging and MR planning

GEC-ESTRO target definitions: CTV

• 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.

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