ESTRO 2025 - Abstract Book

S2509

Physics - Autosegmentation

ESTRO 2025

Conclusion: GBP and PNet-A qualitatively agreed most with expert reasoning on directly (structure borders) and indirectly (proxies used for identifying structure borders) important features for PG segmentation. Additionally, this work is the first to show proof-of-principle how topological data analysis can be used for quantitative XAI signal analysis to a-priori mark potentially inadequate CNN-segmentations. Using only features from the predicted PG, persistent