3D Models of Airway Trees from CT Scans: A Point-Based Approach
نویسندگان
چکیده
We propose an algorithm for building 3D models of the airway tree from Computed Tomographic (CT) images. Our procedure first computes a set of core points that tend to concentrate along the centerlines of the airway tree branches. This point set, after a filtering step, is used to build a set of wall points that concentrate on the walls of the airways. Finally, a triangulated surface is build from the wall points using a Delaunay-based reconstruction procedure.
منابع مشابه
Pharyngeal Airway: An Analysis Using 2D vs. 3D Images in Different Malocclusions
Introdouction: The aim of this study was to compare information regarding pharyngeal airway sizes in adolescent subjects with different malocclusion classes obtained from lateral cephalograms and 3–dimensional (3D) cone-beam computed tomography (CBCT) scans. Materials and methods: In this prospective cross-sectional study, CBCT scans and lateral cephalograms of 35 subjects, taken with...
متن کاملTitle: Ct-based Geometry Analysis and Finite Element Models of the Human and Ovine Bronchial Tree
The interpretation of experimental results from functional medical imaging is complicated by inter-subject and inter-species differences in airway geometry. The application of computational models in understanding the significance of these differences requires methods for generation of subject-specific geometric models of the bronchial airway tree. In the current study curvilinear airway center...
متن کاملRobust Matching of 3D Lung Vessel Trees
In order to study ventilation or to extract other functional information of the lungs, intra-patient matching of scans at a different inspiration level is valuable as an examination tool. In this paper, a method for robust 3D tree matching is proposed as an independent registration method or as a guide for other, e.g. voxel-based, types of registration. For the first time, the 3D tree is repres...
متن کاملTarget detection Bridge Modelling using Point Cloud Segmentation Obtained from Photogrameric UAV
In recent years, great efforts have been made to generate 3D models of urban structures in photogrammetry and remote sensing. 3D reconstruction of the bridge, as one of the most important urban structures in transportation systems, has been neglected because of its geometric and structural complexity. Due to the UAV technology development in spatial data acquisition, in this study, the point cl...
متن کاملCT-based geometry analysis and finite element models of the human and ovine bronchial tree.
The interpretation of experimental results from functional medical imaging is complicated by intersubject and interspecies differences in airway geometry. The application of computational models in understanding the significance of these differences requires methods for generation of subject-specific geometric models of the bronchial airway tree. In the current study, curvilinear airway centerl...
متن کامل