ESTRO 2025 - Abstract Book

S3365

Physics - Machine learning models and clinical applications

ESTRO 2025

Figure 2.Correlation Between Pre-Treatment and Post-Treatment Dysphagia

Conclusion: The study demonstrates that non-surgically treated HNC patients with increased tongue area percentages and higher muscle density are at greater risk of dysphagia. Additionally, pre-treatment dysphagia was found to be a strong predictor of post-treatment dysphagia. The use of AI-based CT analysis provides a precise method for identifying patients at risk, allowing for timely interventions to improve swallowing function and quality of life.

Keywords: Artificial intelligence,dysphagia,head neck cancer

References: -Rodrigues MG,Alvarenga EH de L,Haddad L.Dysphagia and head andneck cancer:how tumors and their treatments impact swallowing.Arch HeadNeck Surg.2023;52:e20230009. -Alayon LF,Salas BS,Diaz-Saavedra RC,Ortiz AR,Martin JZ,Jimenez PCL,et al.Screening oropharyngeal dysphagia in patients with head and neck cancer in a radiation oncology department.Reports Pract Oncol Radiother. 2023;28(6):756 – 63. - Hurtado-Oliva J,Zwart AT,Vister J,van der Hoorn A,Steenbakkers RJHM,Wegner I,et al.A new computed tomography based approach to quantify swallowing-muscle volume by measuring tongue musclearea in a single slice.J Cachexia Sarcopenia Muscle.2024;(May).

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Digital Poster Personalized Predictions of Neck Lymph Node Metastases in Head and Neck Cancer Using Mixture Hidden Markov Models Yoel S Pérez Haas 1,2 , Roman Ludwig 1,2 , Julian Brönnimann 2 , Esmée L Looman 1 , Panagiotis Balermpas 1 , Sergi Benavente 3 , Adrian Schubert 4 , Dorothea Barbatei 5 , Laurence Bauwens 5 , Jean-Marc Hoffmann 1 , Olgun Elicin 6 , Matthias Dettmer 7,8 , Bertrand Pouymayou 1 , Roland Giger 4 , Vincent Grégoire 5 , Johannes A Langendijk 9 , Tineke van Zon-Meijer 9 , Jan Unkelbach 1,2 1 Department of Radiation Oncology, University Hospital Zurich, Zurich, Switzerland. 2 Institute of Physics, University of Zurich, Zurich, Switzerland. 3 Department of Radiation Oncology, Hospital Vall d'Hebron, Barcelona, Spain. 4 Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Inselspital, Bern University Hospital, Bern,