| 软组织形变实时仿真的非线性模型 |
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| 引用本文： | 张秋葵,罗立民,杨武.软组织形变实时仿真的非线性模型[J].应用科学学报,2007,25(3):276-282. |
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| 作者姓名： | 张秋葵 罗立民 杨武 |
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| 作者单位： | 东南大学 影像科学与技术实验室，江苏 南京 210096 |
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| 基金项目： | 科技部国际科技合作项目 |
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| 摘 要： | 从软组织形变过程中的能量耗散角度出发，把对粘弹性组织形变的模拟和共轭梯度法能量下降的过程联系起来，提出了一种基于有限元的非线性计算模型。和目前手术仿真中广泛采用的显式计算模型相比该模型不仅稳定，而且更快速。实验结果表明该模型适合于软组织大形变的实时仿真.
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| 关 键 词： | 形变模型、虚拟手术、实时仿真、有限元 |
| 文章编号： | 0255-8297（2007）03-0276-07 |
| 收稿时间： | 2006-09-21 |
| 修稿时间： | 2006-09-212006-12-12 |
A Non-linear Deformable Model for Simulation of Real-Time Soft Tissue Deformation |
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| ZHANG Qiu-kui,LUO Li-min,YANG Wu.A Non-linear Deformable Model for Simulation of Real-Time Soft Tissue Deformation[J].Journal of Applied Sciences,2007,25(3):276-282. |
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| Authors: | ZHANG Qiu-kui LUO Li-min YANG Wu |
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| Institution: | Laboratory of Image Science & Technology, Southeast University, Nanjing 210096, China |
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| Abstract: | Real-time simulation of the soft tissue behavior is a major obstacle in developing a virtual surgery system.In this research,simulation of viscoelasticity is related to an energy dissipation process in a conjugate gradient method.A new approach based on non-linear elasticity and finite element method is suggested,which is more robust and more efficient than the explicit method widely used in real-time surgery simulation.Experimental results show that the new method can be used in real-time simulation of soft tissue with large deformation. |
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| Keywords: | deformable model virtual surgery real-time simulation FEM |
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