Truth cube: Establishing physical standards for soft tissue simulation
Truth cube: Establishing physical standards for soft tissue simulation
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DOI：
10.1016/s1361-8415(03)00008-2
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发表时间：
2003-09-01
影响因子：
10.9
通讯作者：
Dawson, SL
中科院分区：
文献类型：
--
作者：
Kerdok, AE;Cotin, SM;Dawson, SL
准确的软组织行为实时模型是医学仿真系统的关键要素。然而，在这些模拟中需要快速计算，通常需要简化，这限制了变形精度。对这些简化模型的验证仍然是一个挑战。目前，实时建模充其量是针对具有自身内在局限性的有限元模型进行验证。本研究开发了一个物理标准来验证实时软组织变形模型。我们对硅橡胶立方体的CT图像进行了单轴压缩和球形压痕测试，其中嵌入了聚四氟乙烯球体。已知的材料性质，几何形状和控制的边界条件导致了一套完整的体积位移数据。结果与相同情况下的有限元模型分析结果进行了比较。这项工作已经作为一个强大的物理标准的概念证明，用于验证软组织模型。已经创建了一个网站来提供对我们数据库的访问：http://biorobotics.harvard.edu/truthcube/（即将变为http://www.truthcube.org）。(C) 2003 Elsevier B.V.版权所有
Accurate real-time models of soft tissue behavior are key elements in medical simulation systems. The need for fast computation in these simulations, however, often requires simplifications that limit deformation accuracy. Validation of these simplified models remains a challenge. Currently, real-time modeling is at best validated against finite element models that have their own intrinsic limitations. This study develops a physical standard to validate real-time soft tissue deformation models. We took CT images of a cube of silicone rubber with a pattern of embedded Teflon spheres that underwent uniaxial compression and spherical indentation tests. The known material properties, geometry and controlled boundary conditions resulted in a complete set of volumetric displacement data. The results were compared to a finite element model analysis of identical situations. This work has served as a proof of concept for a robust physical standard for use in validating soft tissue models. A web site has been created to provide access to our database: http://biorobotics.harvard.edu/truthcube/ (soon to be http://www.truthcube.org). (C) 2003 Elsevier B.V. All rights reserved.