ESTRO 2024 - Abstract Book

S219

Brachytherapy - Gynaecology

ESTRO 2024

Conclusion:

The total procedure time for intraoperative MRgBT procedures was longer for Syed-Neblett template cases due to larger CTV HR and number of needles used, but decreased by 10 minutes per year over the last 4 years. Efficiency improvements were evident for second/third insertions, which were on average 21 minutes faster than first insertion. The team will continue optimizing efficiency for intraoperative cervical MRgBT procedures.

Keywords: MR-guided brachytherapy, cervical cancer, workflow

368

Proffered Paper

Use of prerectal Hydrogel spacer during IGBT for advanced Cervical cancer: A Prospective Study

Richa Tiwari 1,2 , Geeta Narayanan 2

1 The Christie, Proton Centre, Manchester, United Kingdom. 2 Vydehi Institute of Medical Sciences and Research Centre, Radiation Oncology, Bengaluru, India

Purpose/Objective:

The evolution of gynecological brachytherapy from conventional point-based planning to image-guided volume oriented treatment planning has allowed individualized dose optimization, and potential dose escalation. In order to achieve tumor control of more than 90% in locally advanced cervical cancers, the delivered dose to the target needs to be more than 85 Gy 1 . This dose is challenging to deliver, even with advanced image guided brachytherapy(IGBT) techniques, when normal dose-limiting structures like the rectum are close to the