Construction Method of Three-Dimensional Deformable Template Models for Tree-Shaped Organs

Hotaka TAKIZAWA
Shinji YAMAMOTO

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E89-D    No.1    pp.326-331
Publication Date: 2006/01/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e89-d.1.326
Print ISSN: 0916-8532
Type of Manuscript: PAPER
Category: Image Recognition, Computer Vision
Keyword: 
medical image recognition,  template model,  human organ,  Delaunay triangulation,  eigen space,  

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Summary: 
In this paper, we propose a construction method of three-dimensional deformable models that represent tree-shaped human organs, such as bronchial tubes, based on results obtained by statistically analyzing the distributions of bifurcation points in the tree-shaped organs. The models are made to be used as standard templates of tree-shaped organs in medical image recognition, and are formed by control points that can be uniquely identified as structural elements of organs such as bifurcation tracheae in bronchial tubes. They can be transfigured based on the statistical validity of relationships between the control points. The optimal state of that transfiguration is determined within the framework of energy minimization. Experimental results from bronchial tubes are shown on actual CT images.

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