交互式血管挤压形变仿真方法研究  

Research on Interactive Simulation Methods of Blood Vessel Extrusion Deformation

作　　者：高志坚 陈国栋[1] 王娜 GAO Zhi-jian;CHEN Guo-dong;Wang Na(College of Physics and Information Engineering,Fuzhou University,Fuzhou 350100,China;School of Electronics and Information Engineering,Fuqing Branch of Fujian Normal University,Fuzhou 350300,China;Key Laboratory of Nondestructive Testing Technology in Fujian Higher Education Institutions,Fuqing Branch of Fujian Normal University,Fuzhou 350300,China)

机构地区：[1]福州大学物理与信息工程学院,福建福州350100 [2]福建师范大学福清分校电子与信息工程学院,福建福州350300 [3]无损检测技术福建省高等学校重点实验室(福建师范大学福清分校),福建福州350300

出　　处：《佳木斯大学学报（自然科学版）》2020年第2期125-129,共5页Journal of Jiamusi University：Natural Science Edition

基　　金：福建省自然科学基金项目(2016J01293,2017J01107,2018J01787);福建省中青年教师教育科研项目(JA15574);校级国家自然基金校内培育项目(KY2017NS05)。

摘　　要：心血管疾病仿真是虚拟手术系统的重要组成部分,对血管在手术过程中的交互式形变模拟是仿真系统的重点和难点。根据弹性动力学的形变模型和形变力的分布,推导位移场的表达式。借助两种包围盒碰撞算法对血管与血管钳之间的碰撞以及形变过程中自身的碰撞进行检测。仿真结果证明,血管形变的视觉真实感强,符合物理直觉,实时性尚可,证实了该方法的可行性。Cardiovascular disease simulation is an important part of the virtual surgery system.The interactive blood vessels deformation simulation is the focus and difficulty of the simulation system.Derivation of the expression of the displacement field based on the deformation model of elastic dynamics and the distribution of deformation forces.The collision between the blood vessel and the vascular clamp and the collision of blood vessel itself during the deformation process are examined by two bounding box collision detection algorithms.The simulation results show that the deformation of blood vessels has a good visual sense of reality,conforms to physical intuition,and the real-time performance is acceptable,which proves the feasibility of the method.

关 键 词：虚拟手术 血管形变 碰撞检测 形变方法 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]