Experimental verification of brain tissue incompressibility using digital image correlation

被引：56

作者：

Libertiaux, V. ^{[1
]}

Pascon, F. ^{[1
]}

Cescotto, S. ^{[1
]}

机构：

[1] Univ Liege, Dpt ArGEnCo, B-4000 Liege, Belgium

来源：

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS | 2011年 / 4卷 / 07期

关键词：

Brain tissue; Digital image correlation; Incompressibility; Compression tests; Relaxation tests; Cyclic tests; CONSTITUTIVE MODEL; DEFORMATION; BEHAVIOR; FAILURE;

D O I：

10.1016/j.jmbbm.2011.03.028

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

For decades, incompressibility has been a major assumption in the mechanical study of brain tissue. This assumption is based on the hydrated nature of the biological tissues and the incompressibility of fluids. In this paper, an experimental validation of this assumption using digital image correlation is presented. Unconfined compression tests, relaxation tests and cyclic tests were performed on cylindrical samples of swine brains at loading rates suitable for neurosurgical applications. Digital image correlation was used to evaluate the evolution of the volume ratio throughout the tests. The preparation of the samples is described and it is demonstrated that it causes no statistically significant change of their mechanical properties. The results indicate that the brain tissue incompressibility assumption is verified. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1177 / 1185

页数：9

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