ESTRO 2025 - Abstract Book

S284

Brachytherapy - Gynaecology

ESTRO 2025

Conclusion: iRex60, ISV60, and D2cc rectum were failed to established correlation with grade >=2 GI toxicity. However, mean IR CTV volume (HR 1.14, p=0.02) and Sigmoid D0.1cc (HR 1.27, p=0.045) showed the potential correlation to further investigate for further GI toxicity control in addition to the robust optimization from EMBRACE-II protocol.

Keywords: ISV, indirect ratio of excess dose volume, GI tox

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