Dynamic analysis of a needle insertion for soft materials: Arbitrary Lagrangian-Eulerian-based three-dimensional finite element analysis
Dynamic analysis of a needle insertion for soft materials: Arbitrary Lagrangian-Eulerian-based three-dimensional finite element analysis
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DOI：
10.1016/j.compbiomed.2014.07.012
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发表时间：
2014-10-01
影响因子：
7.7
通讯作者：
Tanaka, Hiromi T.
中科院分区：
文献类型：
--
作者：
Yamaguchi, Satoshi;Tsutsui, Kihei;Tanaka, Hiromi T.
背景：我们的目标是开发一个三维有限元模型，使动态分析针插入软材料。为了演示大变形和断裂，我们使用任意拉格朗日-欧拉（ALE）方法进行流体分析。我们进行了基于ALE的有限元分析3%琼脂凝胶和三种类型的铜针与斜面tips.Methods：为了评估模拟结果，我们比较了针偏转和插入力与相应的实验结果与单轴机械手获得。我们研究了剪切应力分布的琼脂凝胶在不同的时间scale.Results：对于30度，45度，和60度，两组结果之间的偏差，每个针分别为2.424，2.981，和3.737毫米，分别。对于插入力，模拟和实验结果之间的不匹配区域误差（p < 0.05）没有显着差异：结论：我们的研究结果有可能成为一个垫脚石，以制定术前手术计划，以估计最佳的针插入路径的MR图像引导微波凝固治疗和分析生物组织中的大变形和骨折。(C)2014爱思唯尔有限公司版权所有。
Background: Our goal was to develop a three-dimensional finite element model that enables dynamic analysis of needle insertion for soft materials. To demonstrate large deformation and fracture, we used the arbitrary Lagrangian-Eulerian (ALE) method for fluid analysis. We performed ALE-based finite element analysis for 3% agar gel and three types of copper needle with bevel tips.Methods: To evaluate simulation results, we compared the needle deflection and insertion force with corresponding experimental results acquired with a uniaxial manipulator. We studied the shear stress distribution of agar gel on various time scales.Results: For 30 degrees, 45 degrees, and 60 degrees, differences in deflections of each needle between both sets of results were 2.424, 2.981, and 3.737 mm, respectively. For the insertion force, there was no significant difference for mismatching area error (p < 0.05) between simulation and experimental results.Conclusions: Our results have the potential to be a stepping stone to develop pre-operative surgical planning to estimate an optimal needle insertion path for MR image-guided microwave coagulation therapy and for analyzing large deformation and fracture in biological tissues. (C) 2014 Elsevier Ltd. All rights reserved.