scholarly journals Study on Collision Detection and Force Feedback Algorithm in Virtual Surgery

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Yu Zhang ◽  
Dan Luo ◽  
Jia Li ◽  
Jisheng Li
Keyword(s):  
Virtual Reality ◽  
Surgical Training ◽  
Collision Detection ◽  
Force Feedback ◽  
Euler Method ◽  
Training System ◽  
Virtual Surgery ◽  
Virtual Reality Technology ◽  
Important Indicator ◽  
Feedback Algorithm

The development of virtual reality technology is expected to solve traditional surgical training. The lack of methods has brought revolutionary advances in technology. The virtual surgery system based on collision detection and force feedback can enable the operator to have stronger interaction, which is an exploration of the feature of touch in virtual reality technology. Reality is an important indicator of the virtual surgical system. This article improves the realism of the system from the visual and tactile senses and uses the surrounding ball collision detection and force feedback algorithms to build a realistic surgical platform. In the virtual surgery training system, the introduction of force feedback greatly improves the sense of presence during virtual surgery interaction. The operator can feel the softness and hardness of different tissues and organs through the force feedback device. Virtual reality is an interdisciplinary comprehensive technology that has been widely used in military, film, medical, and gaming fields. Virtual reality can simulate the objective world and display it visually, making people feel immersive. Virtual surgery provides surgeons with a recyclable surgical practice platform and can help doctors perform preoperative rehearsals and predict the results of surgery. The design of collision detection and force feedback algorithms is a prerequisite to ensure the immersion and transparency of the virtual surgical training system. This article mainly introduces the collision detection and force feedback algorithm research in virtual surgery, with the intention of providing some ideas and directions for the development of virtual surgery. This paper proposes two collision detection algorithms, space decomposition method and hierarchical bounding box method, and three force feedback algorithms including spring mass point algorithm, Runge–Kutta method, and Euler method to construct virtual surgery collision detection and force feedback. Experiment with the Overall System Architecture. This paper proves through experimental results that the average collision detection time after the application of the improved collision detection and force feedback algorithm in the virtual surgery system is more than 80.7% less than the traditional method, which greatly improves the detection speed.

Visualisation of Burring Operation in Virtual Surgery Simulation

2010 ◽  
Author(s):  
Esin Onbasıog˘lu ◽  
Bas¸ar Atalay ◽  
Dionysis Goularas ◽  
Ahu H. Soydan ◽  
Koray K. S¸afak ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Surgical Training ◽  
Force Feedback ◽  
Surgical Simulation ◽  
Ct Images ◽  
Patient Specific ◽  
Virtual Surgery ◽  
Surgery Simulation ◽  
Real Patients ◽  
Surgical Operations

Virtual reality based surgical training have a great potential as an alternative to traditional training methods. In neurosurgery, state-of-the-art training devices are limited and the surgical experience accumulates only after so many surgical procedures. Incorrect surgical movements can be destructive; leaving patients paralyzed, comatose or dead. Traditional techniques for training in surgery use animals, phantoms, cadavers and real patients. Most of the training is based either on these or on observation behind windows. The aim of this research is the development of a novel virtual reality training system for neurosurgical interventions based on a real surgical microscope for a better visual and tactile realism. The simulation works by an accurate tissue modeling, a force feedback device and a representation of the virtual scene on the screen or directly on the oculars of the operating microscope. An intra-operative presentation of the preoperative three-dimensional data will be prepared in our laboratory and by using this existing platform virtual organs will be reconstructed from real patients’ images. VISPLAT is a platform for virtual surgery simulation. It is designed as a patient-specific system that provides a database where patient information and CT images are stored. It acts as a framework for modeling 3D objects from CT images, visualization of the surgical operations, haptic interaction and mechanistic material-removal models for surgical operations. It tries to solve the challenging problems in surgical simulation, such as real-time interaction with complex 3D datasets, photorealistic visualization, and haptic (force-feedback) modeling. Surgical training on this system for educational and preoperative planning purposes will increase the surgical success and provide a better quality of life for the patients. Surgical residents trained to perform surgery using virtual reality simulators will be more proficient and have fewer errors in the first operations than those who received no virtual reality simulated education. VISPLAT will help to accelerate the learning curve. In future VISPLAT will offer more sophisticated task training programs for minimally invasive surgery; this system will record errors and supply a way of measuring operative efficiency and performance, working both as an educational tool and a surgical planning platform quality.

scholarly journals The added value of virtual reality technology and force feedback for surgical training simulators

Work ◽  
2012 ◽  
Vol 41 ◽  
pp. 2288-2292 ◽  
Author(s):  
L. Zhang ◽  
C. Grosdemouge ◽  
V. S. Arikatla ◽  
W. Ahn ◽  
G. Sankaranarayanan ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Surgical Training ◽  
Force Feedback ◽  
Added Value ◽  
Virtual Reality Technology

scholarly journals Research on High-tech Ammunition Training System Based on Virtual Reality Technology

2017 ◽  
Vol 128 ◽  
pp. 01012 ◽  
Author(s):  
Zhang Meng ◽  
Xu Lutie ◽  
Yu Weibo ◽  
Liu Hongbo
Keyword(s):  
Virtual Reality ◽  
Training System ◽  
High Tech ◽  
Virtual Reality Technology

scholarly journals Clinical Effect of Virtual Reality Technology on Rehabilitation Training of Sports Injury

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Jing Chen
Keyword(s):  
Virtual Reality ◽  
Upper Limb ◽  
Sports Injury ◽  
Training System ◽  
Average Score ◽  
Virtual Reality Technology ◽  
Upper Limb Rehabilitation ◽  
Rehabilitation Training ◽  
Rehabilitation System ◽  
Limb Rehabilitation

In order to make most patients recover most of their limb functions after rehabilitation training, virtual reality technology is an emerging human-computer interaction technology, which uses the computer and the corresponding application software to build the virtual reality environment. Completing the training tasks in the virtual environment attracts the patients to conduct repeated training in the game and task-based training mode and gradually realizes the rehabilitation training goals. For the rehabilitation population with certain exercise ability, the kinematics of human upper limbs is mainly analyzed, and the virtual reality system based on HTC VIVE is developed. The feasibility and work efficiency of the upper limb rehabilitation training system were verified by experiments. Adult volunteers who are healthy and need rehabilitation training to participate in the experiment were recruited, and experimental data were recorded. The virtual reality upper limb rehabilitation system was a questionnaire. By extracting the motion data, the system application effect is analyzed and evaluated by the simulation diagram. Follow-up results of rehabilitation training showed that the average score of healthy subjects was more than 4 points and 3.8 points per question. Therefore, it is feasible to perform upper limb rehabilitation training using the HTC VIVE virtual reality rehabilitation system.

Research on the Design and Realization of Electrical Training System Based on the Virtual Reality Technology

2014 ◽  
Vol 998-999 ◽  
pp. 1753-1756 ◽  
Author(s):  
Bao Zhen Feng
Keyword(s):  
Virtual Reality ◽  
Interface Design ◽  
Training System ◽  
Simulation Software ◽  
Virtual Reality Technology ◽  
Computer Technique ◽  
Training Project ◽  
Modern Computer ◽  
Database Technology ◽  
Design And Manufacture

This paper is mainly about the process of design and realization of electrical training software based on the virtual reality technology. Some modern computer technique are used in this paper, such as, interface design technology, animation design and manufacture technology, 3D modeling and rendering technology, virtual reality technology, network technology, database technology and the Man-machine interface sensor and communication technology. The electrical technique skill education in occupation post analysis, training project and key information extraction, the analysis of the teaching object have been realized. The overall structure of the system design, media design, copy and script writing have been accomplished. The virtual reality simulation software for technique training introduced in this paper has the characteristics of strong professionalism, situations, procedural, interactivity and intelligence. It is more realistic, more manufacturability and more interactivity than the traditional simulation teaching software. Therefore, it can achieve better teaching training effects. Furthermore it has common hardware training equipment incomparable advantages.

The Application of Virtual Reality Technology in Teaching of Power Equipment Disassembling and Assembling

2014 ◽  
Vol 933 ◽  
pp. 753-756
Author(s):  
Xian Qi Xu
Keyword(s):  
Virtual Reality ◽  
Training System ◽  
Teaching Evaluation ◽  
The Internet ◽  
Practical Training ◽  
Power Equipment ◽  
Virtual Reality Technology ◽  
Technology In Teaching

Based on the analysis of power equipment disassembling and assembling situation, this paper puts forward establishing a training system of power equipment disassembling and assembling for the practical training teaching on the basis of virtual reality technology simulation. The system is issued on the internet for realizing remote teaching evaluation and sharing of resources.

Towards a Virtual Reality Simulator for Orthognathic Basic Skils

2012 ◽  
Vol 162 ◽  
pp. 352-357 ◽  
Author(s):  
Raluca Elena Sofronia ◽  
Arjana Davidescu ◽  
George Gustav Savii
Keyword(s):  
Virtual Reality ◽  
Collision Detection ◽  
Orthognathic Surgery ◽  
Nerve Lesion ◽  
Virtual Reality Technology ◽  
Non Union ◽  
Bounding Volumes ◽  
Saw Blade ◽  
High Level ◽  
Arthroplasty Surgery

Bone sawing skill demands a high level of dexterity from the surgeon that can be achieved only with a lot of training. Sawing is a basic skill required in many procedures, such as: osteotomy, ostectomy, amputation and arthroplasty surgery. Inefficient sawing can lead in orthognathic surgery to nerve lesion, bad split and non-union. Using virtual reality technology this complications can be reduced, by training the students on simulators until they assimilate the skill. This paper presents an early prototype for a bone sawing simulator in orthognathic surgery. A voxel-based mandible model obtained from a Computer Tomography is cut by removing the voxels that are inside the saw blade. The collision detection is based on hierarchical bounding volumes. The removal process is observed both visually and haptically.

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