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

共 38 条

[11] Croom FH, 1978, BASIC CONCEPTS ALGEG
[12] On the imposition of essential boundary conditions in natural neighbour Galerkin methods
Cueto, E
Cegoñino, J
Calvo, B
Doblaré, M
[J]. COMMUNICATIONS IN NUMERICAL METHODS IN ENGINEERING, 2003, 19 (05): : 361 - 376
[13] Modelling three-dimensional piece-wise homogeneous domains using the α-shape-based natural element method
Cueto, E
Calvo, B
Doblaré, M
[J]. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, 2002, 54 (06) : 871 - 897
[14] Dohrmann CR, 2000, INT J NUMER METH ENG, V47, P1549, DOI 10.1002/(SICI)1097-0207(20000330)47:9<1549::AID-NME842>3.0.CO
[15] 2-K
[16] 3-DIMENSIONAL ALPHA-SHAPES
EDELSBRUNNER, H
MUCKE, EP
[J]. ACM TRANSACTIONS ON GRAPHICS, 1994, 13 (01): : 43 - 72
[17] EDELSBRUNNER H, 1983, IEEE T INFORM THEORY, V29, P551, DOI 10.1109/TIT.1983.1056714
[18] FULLY-AUTOMATIC MESH GENERATION FOR 3-D DOMAINS BASED UPON VOXEL SETS
FREY, P
SARTER, B
GAUTHERIE, M
[J]. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, 1994, 37 (16) : 2735 - 2753
[19] Fyhire DP, 1992, T 38 ANN M ORTH RES
[20] A HOMOGENIZATION SAMPLING PROCEDURE FOR CALCULATING TRABECULAR BONE EFFECTIVE STIFFNESS AND TISSUE-LEVEL STRESS
HOLLISTER, SJ
BRENNAN, JM
KIKUCHI, N
[J]. JOURNAL OF BIOMECHANICS, 1994, 27 (04) : 433 - 444

← 1 2 3 4 →