Gynae BT_Lucknow_2018

SUMMARY High Risk CTV : Target definition / Contouring on CT

Based on Clinical examination, single MRI (at diagnosis preferable) and CT Imaging at Brachytheapy

Whole of Cervix

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• Presumed extensions at brachytherapy

- Width: parametrium clinically & (TRUS)

- Height: to be generous to include a larger volume of uterus superiorly (? Safety margins: 2/3rds ) while vaginal disease to be delineated based on clinical findings at brachy

- Thickness: anatomical boundaries (rectum/ bladder)

• CT Based Target Definition: Current area of Research