Virtual deployment of pipeline flow diverters in cerebral vessels with aneurysms to understand thrombosis

Leonardo Flórez-Valencia 1 Eduardo Dávila Serrano 2 Juan Riveros Reyes 1 Olivier Bernard 3 Jonas Latt 4 Orestis Malaspinas 4, 5 Bastien Chopard 4 Guy Courbebaisse 6 Maciej Orkisz 6
2 Service Informatique et développements
CREATIS - Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé
3 Images et Modèles
CREATIS - Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé
6 MOTIVATE - Imagerie et modélisation Vasculaires, Thoraciques et Cérébrales
CREATIS - Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé : 139739
Abstract : We present a prototype software to virtually deploy pipeline fl ow diverting stents in intracranial vessels with aneurysms. The fi nal objective is to understand the biological and biomechanical mechanisms underlying the stent-induced clot formation within the aneurysm. The weaving pattern of the selected pipeline stent is described w.r.t. cylindrical coordinates. Patient-speci fic 3D vascular geometry is extracted by a level-set image segmentation algorithm. A deformable cylindrical simplex mesh model is used to simulate the virtual stent positioning. A continuous Right Generalized Cylinder model is then used to obtain the mapping of the stent geometry onto the deformed cylindrical surface. Meshes representing the vessel/aneurysm surface and the fi laments of the stent are used as input to simulate the fl uid dynamics without and with the virtual stent. Lattice Boltzmann method is used to solve the equations. We show preliminary visual results on a first patient.
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Leonardo Flórez-Valencia, Eduardo Dávila Serrano, Juan Riveros Reyes, Olivier Bernard, Jonas Latt, et al.. Virtual deployment of pipeline flow diverters in cerebral vessels with aneurysms to understand thrombosis. MICCAI-STENT'12 The 1st International MICCAI-Workshop on Computer Assisted Stenting, Oct 2012, Nice, France. pp.49. ⟨hal-00842724⟩

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