Establishment of Emergency Teaching Model and Optimization of Discrete Dynamic Calculation in Complex Virtual Simulation Environment

Virtual surgery is a typical application of virtual reality technology in the medical field, which can help improve the success rate of surgery and reduce medical costs in various aspects such as medical training, surgery planning, and intraoperative navigation, and is becoming a hot research topic...

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Published in:Mathematical problems in engineering 2022-06, Vol.2022, p.1-10
Main Authors: Li, He, Sun, Yuansong, Song, Kai, Yin, Chunlin
Format: Article
Language:English
Subjects:
Algorithms
Biomechanics
Chemistry
Computer simulation
Deformation effects
Education
Efficiency
Experiments
Finite element method
First aid
Input impedance
Knowledge
Laboratories
Learning
Mass-spring systems
Mathematical problems
Medical research
Model accuracy
Modelling
Modules
Optimization
Physiology
Robot dynamics
Simulation
Soft tissues
Software upgrading
Students
Teaching
Teleoperators
Tracking
Virtual reality
Viscoelasticity
Visual effects
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Sun, Yuansong
Song, Kai
Yin, Chunlin
description Virtual surgery is a typical application of virtual reality technology in the medical field, which can help improve the success rate of surgery and reduce medical costs in various aspects such as medical training, surgery planning, and intraoperative navigation, and is becoming a hot research topic and a frontier subject in the medical field. The establishment of virtual surgery simulation system involves the intersection and penetration of various disciplines, and the research is difficult, and many functional modules are still not perfect. This study focuses on the key technologies in the virtual surgery simulation system, focusing on two core modules, the soft tissue modeling method and the collision detection algorithm, to improve the accuracy of the soft tissue model deformation under the condition of meeting the real-time system. The biomechanical properties of soft tissues are studied, the viscoelastic properties are analyzed, and the viscoelastic theory is used as the basis for soft tissue modeling; the geometric model is established by using a complementary method of surface model and tetrahedral mesh cells, with the surface model covering the outer surface for visual rendering and the tetrahedral mesh cells for skeleton support of the physical model, so that the model has a better visual effect and deformation effect, which enhances the model fidelity that is enhanced by the better visual effect and deformation effect; the soft tissue physical modeling method is summarized and summarized to lay the foundation for soft tissue model optimization. The experimental results show that the bilateral teleoperation system under analog control can give the operator a better haptic sensation (smaller value of input impedance felt by the operator when doing free motion from the robot) while ensuring good positional tracking and force tracking effects. This method solves the problems of collapse distortion and lack of viscoelastic properties of the traditional mass-spring model, and improves the accuracy of model deformation. Based on the improved algorithm, the viscoelastic hybrid filled sphere model of the liver organ is successfully established, which proves that the modeling method is feasible and effective.
doi_str_mv 10.1155/2022/6767237
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The establishment of virtual surgery simulation system involves the intersection and penetration of various disciplines, and the research is difficult, and many functional modules are still not perfect. This study focuses on the key technologies in the virtual surgery simulation system, focusing on two core modules, the soft tissue modeling method and the collision detection algorithm, to improve the accuracy of the soft tissue model deformation under the condition of meeting the real-time system. The biomechanical properties of soft tissues are studied, the viscoelastic properties are analyzed, and the viscoelastic theory is used as the basis for soft tissue modeling; the geometric model is established by using a complementary method of surface model and tetrahedral mesh cells, with the surface model covering the outer surface for visual rendering and the tetrahedral mesh cells for skeleton support of the physical model, so that the model has a better visual effect and deformation effect, which enhances the model fidelity that is enhanced by the better visual effect and deformation effect; the soft tissue physical modeling method is summarized and summarized to lay the foundation for soft tissue model optimization. The experimental results show that the bilateral teleoperation system under analog control can give the operator a better haptic sensation (smaller value of input impedance felt by the operator when doing free motion from the robot) while ensuring good positional tracking and force tracking effects. This method solves the problems of collapse distortion and lack of viscoelastic properties of the traditional mass-spring model, and improves the accuracy of model deformation. Based on the improved algorithm, the viscoelastic hybrid filled sphere model of the liver organ is successfully established, which proves that the modeling method is feasible and effective.</description><identifier>ISSN: 1024-123X</identifier><identifier>EISSN: 1563-5147</identifier><identifier>DOI: 10.1155/2022/6767237</identifier><language>eng</language><publisher>New York: Hindawi</publisher><subject>Algorithms ; Biomechanics ; Chemistry ; Computer simulation ; Deformation effects ; Education ; Efficiency ; Experiments ; Finite element method ; First aid ; Input impedance ; Knowledge ; Laboratories ; Learning ; Mass-spring systems ; Mathematical problems ; Medical research ; Model accuracy ; Modelling ; Modules ; Optimization ; Physiology ; Robot dynamics ; Simulation ; Soft tissues ; Software upgrading ; Students ; Teaching ; Teleoperators ; Tracking ; Virtual reality ; Viscoelasticity ; Visual effects</subject><ispartof>Mathematical problems in engineering, 2022-06, Vol.2022, p.1-10</ispartof><rights>Copyright © 2022 He Li et al.</rights><rights>Copyright © 2022 He Li et al. 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The biomechanical properties of soft tissues are studied, the viscoelastic properties are analyzed, and the viscoelastic theory is used as the basis for soft tissue modeling; the geometric model is established by using a complementary method of surface model and tetrahedral mesh cells, with the surface model covering the outer surface for visual rendering and the tetrahedral mesh cells for skeleton support of the physical model, so that the model has a better visual effect and deformation effect, which enhances the model fidelity that is enhanced by the better visual effect and deformation effect; the soft tissue physical modeling method is summarized and summarized to lay the foundation for soft tissue model optimization. The experimental results show that the bilateral teleoperation system under analog control can give the operator a better haptic sensation (smaller value of input impedance felt by the operator when doing free motion from the robot) while ensuring good positional tracking and force tracking effects. This method solves the problems of collapse distortion and lack of viscoelastic properties of the traditional mass-spring model, and improves the accuracy of model deformation. Based on the improved algorithm, the viscoelastic hybrid filled sphere model of the liver organ is successfully established, which proves that the modeling method is feasible and effective.</abstract><cop>New York</cop><pub>Hindawi</pub><doi>10.1155/2022/6767237</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-5939-525X</orcidid><oa>free_for_read</oa></addata></record>
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source Coronavirus Research Database
subjects Algorithms
Biomechanics
Chemistry
Computer simulation
Deformation effects
Education
Efficiency
Experiments
Finite element method
First aid
Input impedance
Knowledge
Laboratories
Learning
Mass-spring systems
Mathematical problems
Medical research
Model accuracy
Modelling
Modules
Optimization
Physiology
Robot dynamics
Simulation
Soft tissues
Software upgrading
Students
Teaching
Teleoperators
Tracking
Virtual reality
Viscoelasticity
Visual effects
title Establishment of Emergency Teaching Model and Optimization of Discrete Dynamic Calculation in Complex Virtual Simulation Environment
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