Automatic finite elements mesh generation from planar contours of the brain: an image driven blobby approachReport as inadecuate




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1 TIMC-IMAG - Techniques de l-Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications Grenoble 2 GMCAO TIMC-IMAG - Techniques de l-Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications Grenoble

Abstract : In this paper, we address the problem of automatic mesh generation for finite elements modeling of anatomical organs for which a volumetric data set is available. In the first step a set of characteristic outlines of the organ is defined manually or automatically within the volume. The outlines define the -key frames- that will guide the procedure of surface reconstruction. Then, based on this information, and along with organ surface curvature information extracted from the volume data, a 3D scalar field is generated. This field allows a 3D reconstruction of the organ: as an iso-surface model, using a marching cubes algorithm; or as a 3D mesh, using a grid -immersion- technique, the field value being used as the outside-inside test. The final reconstruction respects the various topological changes that occur within the organ, such as holes and branching elements.

Keywords : Brain shift biomechanical model soft tissue modeling





Author: Marek Bucki - Yohan Payan -

Source: https://hal.archives-ouvertes.fr/



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