Point-cloud method for image-based biomechanical stress analysis

被引：6

作者：

Qian, Jing ^{[1
]}

Lu, Jia ^{[1
]}

机构：

[1] Univ Iowa, Dept Mech & Ind Engn, Ctr Comp Aided Design, Iowa City, IA 52242 USA

来源：

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING | 2011年 / 27卷 / 10期

基金：

美国国家科学基金会;

关键词：

point-cloud method; discrete gradient method; medical images; stress analysis; CONFORMING NODAL INTEGRATION; DISCRETE GRADIENT-METHOD; FINITE-ELEMENT-METHOD; TETRAHEDRAL ELEMENT; BONE; GENERATION; SHAPE;

D O I：

10.1002/cnm.1432

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

This paper introduces a point-cloud method for the stress analysis in biological systems. The method takes a point-cloud as the geometric input. Each point represents a small material volume that is assumed to undergo a uniform deformation during motion. The strain at each point is computed from the relative displacements of a set of neighboring points. Delaunay tessellation is utilized to provide the neighboring relation and the point volume. An efficient method is developed to extract point-cloud model from medical images. An aorta inflation problem and a skull impact problem are presented to demonstrate the utility of the method. Copyright (C) 2011 John Wiley & Sons, Ltd.

引用

页码：1493 / 1506

页数：14

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