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<dc:title xml:lang="fr">Rendu volumique expressif pour la visualisation interactive de données médicales : application à l'imagerie échographique</dc:title>
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<dc:subject xml:lang="fr">Rendu volumique direct</dc:subject>
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<dc:subject xml:lang="en">Direct volume rendering</dc:subject>
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<dcterms:abstract xml:lang="fr">L'échographie se distingue des autres modalités d’imagerie par son aptitude à fournir des images dynamiques, non invasives et sûres. Cependant, les images échographiques restent principalement 2D, rendant difficile d'évaluer le contexte géométrique de l’anatomie, problématique en particulier pour des scénarios cliniques où la profondeur et l'agencement 3D des structures sont cruciaux. Nous nous intéressons ainsi aux volumes d’images échographiques. Pour les applications de visualisation interactive, la méthode la plus employée est le rendu volumique direct. Nous présentons trois contributions dans ce domaine : une nouvelle méthodologie de rendu volumique direct, basé sur la construction d’un nouveau type d’iso-surface, une méthodologie d’évaluation de rendus volumiques d’images médicales et l'intégration de nos travaux dans les applications développées dans le contexte du projet Disrumpere mené par l'IRCAD.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Ultrasound, as a medical imaging modality, is able to produce dynamically images from a body's internal structures in a safe, radiation-free way. Nevertheless, ultrasound images are mainly two-dimensional, making it difficult even for experts to apprehend and evaluate the 3D geometric context the structures are placed in. This is a hard limitation that can for example introduce errors in diagnostics, or even doubt in surgical procedures, that are inherently undesirable for such applications. We therefore propose to study the use of volumetric ultrasound images in the context of medical imaging, and specifically the visualisation process of such data using direct volume rendering. We introduce three different contributions in this domain: a new direct volume rendering technique, leveraging a new type of iso-surface, an evaluation methodology for medical image visualisation, and the integration of our work in software produced in the context of the Disrumpere project led by IRCAD.</dcterms:abstract>
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