人体软组织建模与实时仿真  

Body's soft tissue modeling and real time simulation

作　　者：武卫翔[1] 王杰华[2] 高瞻[2] Wu Weixiang;Wang Jiehua;Gao Zhan(College of Xinglin,Nantong University,Nantong,Jiangsu 226236,China;School of Information Science and Technology,Nantong University)

机构地区：[1]南通大学杏林学院,江苏南通226236 [2]南通大学信息科学技术学院

出　　处：《计算机时代》2022年第2期1-4,共4页Computer Era

摘　　要：虚拟手术系统在医学中实时仿真以建立可供手术前规划和手术时参考的虚拟环境。由于人体器官大多由软组织构成,有限元法能够精确地进行软组织几何大变形仿真。加速有限元仿真有多种方法,文章采用基于模态分析的模型约简方法,对软组织有限元模型进行模态分析,将约简子空间中的形变向量重构到原始空间,从而实现软组织实时仿真。实验结果表明,采用模型约简方法能够在仿真效率和真实性之间取得较好的平衡。The application of virtual surgery systems are developed to carry out real-time simulation for pre-operative planning and education.Because human organs are mostly composed of soft tissues,finite element method(FEM)can accurately describe the large deformation of soft tissue.There are many methods for accelerating FEM,the model reduction based on the modal analysis is used in this paper,modal analysis is carried out for finite element models,numerical integration is executed in the subspace and the results are used to reconstruct the model’s deformation in original full space,to realize the real time simulation of soft tissue.The result shows that model reduction method can achieve a good balance between simulation efficiency and authenticity.

关 键 词：软组织 有限元 模型约简 模态分析 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]