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Beyond benchmarks: Towards robust artificial intelligence bone segmentation in socio-technical systems

Expert Systems with Applications, vol. 299, pp. 130031

Abstract

Despite the advances in automated medical image segmentation, AI models still underperform in various clinical settings, posing challenges for integration into real-world workflows. In this pre-registered prospective multicenter evaluation, we analyzed 20 state-of-the-art mandibular segmentation models across 19,218 segmentations of 1,000 clinically resampled CT/CBCT scans. Our results suggest that for a given model, segmentation accuracy can vary by up to 25% in Dice score as socio-technical factors such as voxel size, bone orientation, and patient conditions (e.g., osteosynthesis or pathology) shift from favorable to adverse. Higher sharpness, isotropic smaller voxels, and neutral orientation significantly improved results, while metallic osteosynthesis and anatomical complexity led to significant degradation. Our findings challenge the common view of AI models as “plug-and-play” tools and suggest evidence-based optimization recommendations for both clinicians and developers. This will in turn boost the integration of AI segmentation tools in routine healthcare.

Authors 50

  1. Universitätsklinikum Aachen · RWTH Aachen University

    Affiliation as printed

    Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen 52074 Aachen, Germany

    Institute of Medical Informatics, University Hospital RWTH Aachen 52074 Aachen, Germany

  2. Universitätsmedizin Göttingen · University of Göttingen

    Affiliation as printed

    Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen 37075 Goettingen, Germany

  3. Universitätsklinikum Aachen · RWTH Aachen University

    Affiliation as printed

    Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen 52074 Aachen, Germany

    Institute of Medical Informatics, University Hospital RWTH Aachen 52074 Aachen, Germany

  4. Universitätsklinikum Aachen · RWTH Aachen University

    Affiliation as printed

    Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen 52074 Aachen, Germany

    Institute of Medical Informatics, University Hospital RWTH Aachen 52074 Aachen, Germany

  5. Essen University Hospital · Universitätsklinikum Aachen · RWTH Aachen University · University of Minho

    Affiliation as printed

    Center Algoritmi/LASI, University of Minho, 4710-057 Braga, Portugal

    Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen 52074 Aachen, Germany

    Institute of Artificial Intelligence in Medicine (IKIM), University Hospital Essen 45131 Essen, Germany

    Institute of Medical Informatics, University Hospital RWTH Aachen 52074 Aachen, Germany

  6. UMIT TIROL - Private University for Health Sciences and Health Technology

    Affiliation as printed

    UMIT TIROL - Private University For Health Sciences and Health Technology, 6060 Hall in Tyrol, Austria

  7. University of Michigan · École d'Ingénieurs en Chimie et Sciences du Numérique

    Affiliation as printed

    CPE Lyon, 69100 Villeurbanne, Lyon, France

    University of Michigan, Ann Arbor, 48109-1079 Michigan, United States

  8. Materialise (Belgium)

    Affiliation as printed

    Materialise NV, 3001 Leuven, Belgium

  9. Shanghai Jiao Tong University

    Affiliation as printed

    School of Mechanical Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China

  10. Universitätsklinikum Aachen · RWTH Aachen University

    Affiliation as printed

    Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen 52074 Aachen, Germany

    Inzipio GmbH, 52070 Aachen, Germany

  11. University of Basel · University Hospital of Basel

    Affiliation as printed

    Department of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel 4031 Basel, Switzerland

    Medical Additive Manufacturing Research Group (Swiss MAM), Department of Biomedical Engineering, University of Basel, 4123 Allschwil, Switzerland

  12. Essen University Hospital

    Affiliation as printed

    Institute of Artificial Intelligence in Medicine (IKIM), University Hospital Essen 45131 Essen, Germany

  13. University Medical Center Groningen · University of Groningen

    Affiliation as printed

    3D Lab University Medical Center Groningen, University of Groningen 9713 GZ Groningen, the Netherlands

    Department of Oral & Maxillofacial Surgery, University Medical Center Groningen 9713 GZ Groningen, the Netherlands

  14. Université Paris Cité

    Affiliation as printed

    Universite Paris Cité, UFR Odontologie, F-75006 Paris, France

  15. Affiliation as printed

    1000shapes GmbH, 12247 Berlin, Germany

  16. Radboud University Nijmegen · Radboud University Medical Center · Humboldt-Universität zu Berlin · Einstein Center Digital Future · Freie Universität Berlin · Charité - Universitätsmedizin Berlin

    Affiliation as printed

    Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Department of Oral and Maxillofacial Surgery, 12203 Berlin, Germany

    Department of Oral and Maxillofacial Surgery, Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands

    Einstein Center Digital Future (ECDF), 10117 Berlin, Germany

  17. Universitair Ziekenhuis Leuven · KU Leuven

    Affiliation as printed

    Department of Oral and Maxillofacial Surgery, University Hospitals Leuven 3000 Leuven, Belgium

    OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, KU Leuven 3000 Leuven, Belgium

  18. Shanghai Jiao Tong University · Universitätsklinikum Aachen · RWTH Aachen University

    Affiliation as printed

    Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen 52074 Aachen, Germany

    School of Mechanical Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China

  19. Universitätsklinikum Aachen · RWTH Aachen University

    Affiliation as printed

    Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen 52074 Aachen, Germany

  20. Universitätsklinikum Aachen · RWTH Aachen University

    Affiliation as printed

    Institute of Medical Informatics, University Hospital RWTH Aachen 52074 Aachen, Germany

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References 55