ESTRO 2023 - Abstract Book

S1938

Digital Posters

ESTRO 2023

Conclusion Single application multifractionated CT-Guided Interstitial HDR BRT given in four fractions in locally advanced cervical cancer is feasible and safe showing satisfactory response and acceptable toxicities.

PO-2154 Analysis of time-dependent pretreatment OAR dose variation during Image-guided brachytherapy

A.M.H. Khan 1 , A.P. Galerani Lopes 2 , M. Alfishawy 3 , F. Altaf 4 , T. Ali 1 , M. Al Ghafri 5 , S. Yilmaz 2 , N. Yilmaz 5 , N. Babu 6 , M. Ali 5 , A.A. Mirza Aman 7 , A. Vidhwadharan 8 , F. Yousuf 8 , M. Vellengara 2 , I. Al Amri 9 , S.C. Rassou 1 , Z. Al Mandhari 10 , N. Pervez 2 1 Sultan Qaboos Comprehensive Cancer Care and Research Centre, Radiation Oncology, Muscat , Oman; 2 Sultan Qaboos Comprehensive Cancer Care and Research Centre, Radiation Oncology, Muscat, Oman; 3 Sultan Qaboos Comprehensive Cancer Care and Research Centre, Radiation Physics , Muscat, Oman; 4 Sultan Qaboos Comprehensive Cancer Care and Research Centre, Radiation Therapy , Muscat , Oman; 5 Sultan Qaboos Comprehensive Cancer Care and Research Centre, Radiation Physics, Muscat , Oman; 6 Sultan Qaboos Comprehensive Cancer Care and Research Centre, Radiation Physics, Muscat, Oman; 7 Sultan Qaboos Comprehensive Cancer Care and Research Centre, Radiation Therapy, Muscat , Oman; 8 Sultan Qaboos Comprehensive Cancer Care and Research Centre, Radiation Therapy, Muscat, Oman; 9 Sultan Qaboos Comprehensive Cancer Care and Research Centre, Radiation Physics , Muscat , Oman; 10 Sultan Qaboos Comprehensive Cancer Care and Research Centre, Radiation Oncology , Muscat , Oman Purpose or Objective To assess the time-dependent variation in organs at risk (OAR) doses as a result of pretreatment motion during image- guided brachytherapy (IGBT). Materials and Methods Retrospective data was collected in 13 consecutive patients with gynecological malignancies (Endometrial=5, Cervical=6 and Vaginal=2 cancers) from November, 2021 to September, 2022. These patients underwent planning CT and MRI scans for