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<dc:title xml:lang="en">Workflow recognition in wrist fracture surgery through aI-based video analysis</dc:title>
<dcterms:alternative xml:lang="fr">Reconnaissance du processus opératoire en chirurgie des fractures du poignet par analyse vidéo basée sur l’IA</dcterms:alternative>
<dc:subject xml:lang="fr">Reconnaissance du processus opératoire</dc:subject>
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<dc:subject xml:lang="fr">Chirurgie orthopédique ouverte</dc:subject>
<dc:subject xml:lang="fr">Fractures du radius distal</dc:subject>
<dc:subject xml:lang="fr">Apprentissage faiblement supervisé</dc:subject>
<dc:subject xml:lang="en">Surgical workflow recognition</dc:subject>
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<dc:subject xml:lang="en">Open orthopaedic surgery</dc:subject>
<dc:subject xml:lang="en">Distal radius fractures</dc:subject>
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<dcterms:abstract xml:lang="fr">Cette thèse porte sur la reconnaissance automatique du processus opératoire à partir de vidéos de chirurgie ouverte des fractures du poignet. Contrairement aux travaux précédents centrés sur les chirurgies à vision indirecte (ex. laparoscopie), un système de captation dédié est nécessaire en chirurgie ouverte, introduisant des défis spécifiques. Notre première contribution est la création d’un ensemble de données de 50 vidéos annotées hiérarchiquement en phases, étapes, tâches et actions. L’évaluation de méthodes de l’état de l’art révèle l’impact des particularités de ce type de chirurgie, notamment les occlusions. Notre seconde contribution est UCATD, une méthode d’apprentissage faiblement supervisé nécessitant une seule annotation par occurrence d’étape chirurgicale (soit 0,1 % des données). Grâce à un mécanisme de diffusion sensible aux clusters et à l’incertitude, UCATD surpasse les approches existantes et atteint des performances proches de l’apprentissage entièrement supervisé.</dcterms:abstract>
<dcterms:abstract xml:lang="en">This thesis focuses on the automatic recognition of the surgical workflow from videos of wrist fracture open surgery. Unlike previous work centred on indirect-vision surgeries (e.g. laparoscopy), open surgery requires a dedicated acquisition system, introducing specific challenges. Our first contribution is the creation of a dataset of 50 videos annotated hierarchically into phases, steps, tasks, and actions. The evaluation of state-of-the-art methods highlights the specificities of this type of surgery, notably occlusions. Our second contribution is UCATD, a weakly-supervised learning method requiring only a single annotation per surgical step occurrence (i.e. 0.1% of the data). By leveraging a cluster- and uncertainty-aware diffusion mechanism, UCATD outperforms existing approaches and achieves performance close to that of fully-supervised learning.</dcterms:abstract>
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