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Advancing Normal Tissue Complication Probability Modeling with Supervised Contrastive Learning for Predicting Osteoradionecrosis
Conference proceeding   Open access   Peer reviewed

Advancing Normal Tissue Complication Probability Modeling with Supervised Contrastive Learning for Predicting Osteoradionecrosis

Eric Ababio Anyimadu, Xinhua Zhang, Clifton David Fuller, G. Elisabeta Marai and Guadalupe Canahuate
Proceedings of the 41st ACM/SIGAPP Symposium on Applied Computing, Vol.2026, pp.140-147
ACM Conferences
SAC '26: 41st ACM/SIGAPP Symposium on Applied Computing
06/09/2026
DOI: 10.1145/3748522.3779983
PMCID: PMC13249462
PMID: 42272749
url
https://doi.org/10.1145/3748522.3779983View
Published (Version of record) Open Access

Abstract

Normal tissue complication probability (NTCP) modeling using dose-volume histograms (DVHs) is fundamentally challenged by high dimensionality, severe multicollinearity, and substantial overlap between DVH profiles of patients with differing toxicity outcomes, limiting the effectiveness of classical classification approaches. We introduce SC-NTCP, a supervised contrastive learning framework that transforms DVH data into a compact, separable latent representation optimized for predicting osteoradionecrosis (ORN) in head and neck cancer patients. Rather than relying on raw, high-dimensional DVH features, SC-NTCP explicitly maximizes intra-class similarity and inter-class separability within the embedding space, enabling more accurate downstream classification. Using a cohort of head and neck cancer patients, we benchmarked SC-NTCP against logistic regression, support vector machines, multilayer perceptrons, and convolutional neural networks. SC-NTCP demonstrated superior discrimination (AUC = 0.77), improved calibration, and enhanced interpretability via gradient-based feature attribution, while the integration of clinical covariates further augmented predictive performance. By addressing the inherent limitations of DVH data, SC-NTCP offers a principled and interpretable approach for robust radiation toxicity prediction, with the potential to inform personalized treatment planning and improve clinical outcomes.
contrastive learning normal tissue complication osteoradionecrosis dose-volume histogram UIOWA OA Agreement

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