Open AccessCarotid Lumen Segmentation Based on Tubular Anisotropy and Contours Without Edges
Author(s) -
Fethallah Benmansour,
Julien Mille,
Laurent D. Cohen
Publication year - 2009
Language(s) - English
DOI - 10.54294/q8zi79
Subject(s) - segmentation , metric (unit) , path (computing) , boundary (topology) , lumen (anatomy) , tangent , artificial intelligence , dimension (graph theory) , computer vision , anisotropy , computer science , mathematics , geometry , physics , mathematical analysis , medicine , optics , engineering , combinatorics , surgery , operations management , programming language
We present a semi-automatic algorithm for Carotid lumen segmentation on CTA images. Our method is based on a variant of the minimal path method that models the vessel as a centerline and boundary. This is done by adding one dimension for the local radius around the centerline. The crucial step of our method is the definition of the local metrics to minimize. We have chosen to exploit the tubular structure of the vessels one wants to extract to built an anisotropic metric giving higher speed on the center of the vessels and also when the minimal path tangent is coherent with the vessel’s direction. Due to carotid stenosis or occlusions on the provided data, segmentation is refined using a region-based level sets.