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
收藏
页码：515 / 522
页数：8
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