ESTRO 2025 - Abstract Book

S1203

Clinical – Lower GI

ESTRO 2025

Conclusion: The systematic validation process has demonstrated that the All-in-One full-workflow effectively integrates the simulation procedure with the initial radiotherapy through comprehensive automation. In contrast to conventional workflows, this innovative approach significantly reduces the preparation time for the initial treatment from several days to mere minutes, thereby enhancing both patient experience and overall workflow efficiency. The resultant outcomes adhered to the requirements of our center, and the methodology employed for model training and updating holds potential for adaptation across other medical centers, which may enhance its generalizability. References: [1] Yu L, Zhao J, Zhang Z, Wang J, Hu W. Commissioning of and preliminary experience with a new fully integrated computed tomography linac. J Appl Clin Med Phys. 2021;22(7):208-223 [2] Han M, Yao G, Zhang W, et al. Segmentation of CT thoracic organs by multi-resolution VB-nets. SegTHOR@ISBI 2019 [3] Shi F,Hu W,Wu J, et al. Deep learning empowered volume delineation of whole-body organs-at-risk for accelerated radiotherapy. Nat Commun. 2022;13(1):6566 [4] Zhong Y,Yu L,Zhao J, et al.Clinical implementation of automated treatment planning for rectum intensity modulated radiotherapy using voxel-based dose prediction and post-optimization strategies. Front Oncol. 2021;11:697995. doi:10.3389/fonc.2021 Keywords: One-stop radiotherapy; Full-workflow automation Digital Poster Elective nodal CTV in early anal cancer: A systematic review and meta-analysis on the risk of recurrence in the upper pelvic and external iliac LNS Joanna Socha 1,2 , Krzysztof Bujko 3 1 Faculty of Medicine, Jan Dlugosz University in Czestochowa, Czestochowa, Poland. 2 Department of Radiotherapy, Regional Oncology Center, Czestochowa, Poland. 3 Department of Radiotherapy I, M. Skłodowska-Curie National Research Institute of Oncology, Warsaw, Poland Purpose/Objective: For squamous-cell carcinoma of the anal canal, delineation guidelines recommend elective irradiation of the external iliac lymph nodes (LNS) and the upper pelvic LNS (located above the caudal edge of the sacroiliac joints), 2297