Comparison of geometry-based and CT voxel-based finite element modelling and experimental validation

被引：149

作者：

Lengsfeld, M ^{[1
]}

Schmitt, J ^{[1
]}

Alter, P ^{[1
]}

Kaminsky, J ^{[1
]}

Leppek, R ^{[1
]}

机构：

[1] Univ Marburg, Dept Orthopaed Surg, Marburg, Germany

来源：

MEDICAL ENGINEERING & PHYSICS | 1998年 / 20卷 / 07期

关键词：

femur; finite element method; meshing technique; strain gauge;

D O I：

10.1016/S1350-4533(98)00054-X

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The objectives of the paper presented here is the comparison of a geometry-based and voxel-based finite element (FE) method preprocessor of the human femur. The models were experimentally validated by strain gauge measurements (principal stress). The correlation coefficients (r) between the three methods (geometry-based FEM, voxel-based FEM, strain gauge measurements) were found to be in the range 0.91-0.94 (r(2): 0.84-0.88). The relationships between the samples are highly significant (P = 0.001), where the strain gauge results are the independent variables. These results suggest that the validity with respect to the principal stress of a voxel-based modelling is similar to the validity of geometry-based modelling. In summary, therefore, we conclude that voxel-based meshing allows a straightforward interfacing with computerized tomography (CT) scans and might contribute to a clinically applicable FEM technology. (C) 1998 IPEM. Published by :Elsevier Science Ltd. All rights reserved.

引用

页码：515 / 522

页数：8

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