ESTRO 2025 - Abstract Book

S4409

RTT - Treatment planning, OAR and target definitions

ESTRO 2025

Conclusion: While CBCT resolution and the heterogenous radiological nature of primary lung tumours limits the proportion of patients where accurate CBCT GTV structure delineation is feasible, it was successful in 97.3% of the enriched population described. Future studies should include multi-observer evaluations in larger cohorts to confirm the robustness of the workflow.

Keywords: CBCT, Autosegmentation, Lung GTV

References: [1] Walls GM, O'Connor J, Harbinson M, McCarron EP, Duane F, McCann C, et al. Association between statin therapy dose intensity and radiation cardiotoxicity in non-small cell lung cancer: Results from the NI-HEART study. Radiotherapy and Oncology. 2023;186. [2] Barrett S, Simpkin AJ, Walls GM, Leech M, Marignol L. Geometric and Dosimetric Evaluation of a Commercially Available Auto-segmentation Tool for Gross Tumour Volume Delineation in Locally Advanced Non-small Cell Lung Cancer: a Feasibility Study. Clin Oncol (R Coll Radiol). 2021;33:155-62.