Study on the Teleoperation Virtual Liver Surgery Simulation System with Haptic Feedback

2014 ◽  
Vol 945-949 ◽  
pp. 1507-1512
Author(s):  
Yan Hong Fang ◽  
Feng Juan Huang ◽  
Bin Wu
Keyword(s):  
Liver Surgery ◽  
Haptic Feedback ◽  
Simulation System ◽  
System Structure ◽  
Virtual Surgery ◽  
Surgery Simulation ◽  
Telecommunication System ◽  
Initial Experiment ◽  
Experimental Platform ◽  
Teleoperation System

To improve the viability and effectiveness of virtual surgery simulation in telemedicine development, a teleoperation virtual liver surgery simulation system with haptic feedback is studied in this paper. First, teleoperation system structure is designed. Then, key technologies of the system including remote robot controlling, virtual liver surgery simulation and telecommunication are studied. Experimental platform of virtual liver surgery was established based on vizard 4.0 and Sensable-phantom® desktopTM. Telecommunication system based on the Client/Server mode was established using the Microsoft Visual Studio 2008. The initial experiment results show that the system can provide a stable force to the human operator and can transmit remote virtual surgery simulation with a real time, which make a perfect foundation for the next implementation of teleoperation virtual liver surgery simulation system.

Study on Virtual Liver Surgery Simulation System with Real-Time Haptic Feedback

2014 ◽  
Vol 536-537 ◽  
pp. 900-906
Author(s):  
Yan Hong Fang ◽  
Bin Wu ◽  
Zheng Yi Yang
Keyword(s):  
Wave Equation ◽  
Real Time ◽  
Collision Detection ◽  
Liver Surgery ◽  
Spherical Harmonic ◽  
Haptic Feedback ◽  
Simulation System ◽  
System Structure ◽  
Deformation Model ◽  
Surgery Simulation

To improve the precision and real-time of the virtual liver surgery simulation system with haptic feedback, a novel deformation modelling based on wave equation and spherical harmonic is proposed. Continuous changed liver models were mapped into a common reference system in which corresponding coefficients of spherical harmonic were compared with method of principal components analysis and force feedback were calculated by simplified deformation wave equation. Moreover, system structure design, fast collision detection and real-time feedback operation are also discussed in detail. Experimental platform of virtual liver surgery was established based on vizard 4.0 and Sensable-phantom® desktopTM. Experiment results show that the system can provide a stable force to the human operator and which satisfy the requirement of real-time performance. Establishing a simple and lifelike physics deformation model and a precise and rapid collision detection algorithm favors the performance improvement of the virtual liver surgery simulation system.

6-DOF Haptic Interface for Neurosurgical Simulation System

1999 ◽  
Author(s):  
Takeo Asano ◽  
Hiroshi Matsuzaki ◽  
Akito Saito ◽  
Yukihiko Furuhashi ◽  
Yuichiro Akatsuka ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Three Dimensional ◽  
Image Data ◽  
Simulation System ◽  
Haptic Interface ◽  
Virtual Object ◽  
Virtual Surgery ◽  
Surface Rendering ◽  
Three Dimensional Model ◽  
Head Surface

Abstract Practical use of medical simulation system with virtual reality technology is expected because of the learning of the operation procedure. We have therefore developed a neurosurgical simulation system for minimally invasive surgery. Our system is composed of PC and one or two haptic interfaces. Operator can pick up the region of interest to specify the disease portion from DICOM format image data, then three-dimensional model have made by volume and surface rendering with this data. In the next step, system estimates and indicates on CRT the minimally invasive path from the head surface to the disease target that was picked up beforehand by this system which retains healthy human’s three-dimensional atlas data. Finally, the operator can perform a virtual surgery operation by the haptic interface that has been connected to PC, and can cut off an exact or approximate portion of the disease. The operator can feel the resistance from this virtual object. This operation process can be recorded for medical doctors to review later.

A Real-Time Haptics-Based Deformable Model for Virtual Prototyping and Simulations

2009 ◽  
Author(s):  
Jinling Wang ◽  
Wen F. Lu
Keyword(s):  
Real Time ◽  
Material Properties ◽  
Computer Animation ◽  
Force Feedback ◽  
Haptic Feedback ◽  
Simulation System ◽  
Deformable Model ◽  
Chain Model ◽  
Physically Based ◽  
Update Rate

Virtual reality technology plays an important role in the fields of product design, computer animation, medical simulation, cloth motion, and many others. Especially with the emergence of haptics technology, virtual simulation system provides an intuitive way of human and computer interaction, which allows user to feel and touch the virtual environment. For a real-time simulation system, a physically based deformable model including complex material properties with a high resolution is required. However, such deformable model hardly satisfies the update rate of interactive haptic rendering that exceeds 1 kHz. To tackle this challenge, a real-time volumetric model with haptic feedback is developed in this paper. This model, named as Adaptive S-chain model, extends the S-chain model and integrates the energy-based wave propagation method by the proposed adaptive re-mesh method to achieve realistic graphic and haptic deformation results. The implemented results show that the nonlinear, heterogeneous, anisotropic, shape retaining material properties and large range deformation are well modeled. An accurate force feedback is generated by the proposed Adaptive S-chain model in case study which is quite close to the experiment data.

scholarly journals Orbital Osteoblastoma: Technical Innovations in Resection and Reconstruction Using Virtual Surgery Simulation

2016 ◽  
Vol 9 (3) ◽  
pp. 271-276 ◽  
Author(s):  
Giorgio Novelli ◽  
Marco Gramegna ◽  
Gabriele Tonellini ◽  
Gabriella Valente ◽  
Pietro Boni ◽  
...  
Keyword(s):  
Benign Tumor ◽  
State Of The Art ◽  
Young Patients ◽  
Surgical Reconstruction ◽  
Virtual Surgery ◽  
Surgery Simulation ◽  
Orbital Reconstruction ◽  
Technical Innovations ◽  
Radical Removal ◽  
Functional Problems

Osteoblastoma is a benign tumor of bone, representing less than 1% of bone tumors. Craniomaxillofacial localizations account for up to 15% of the total and frequently involve the posterior mandible. Endo-orbital localization is very rare, with most occurring in young patients. Very few of these tumors become malignant. Orbital localization requires radical removal of the tumor followed by careful surgical reconstruction of the orbit to avoid subsequent aesthetic or functional problems. Here, we present a clinical case of this condition and describe a surgical protocol that uses and integrates state-of-the art technologies to achieve orbital reconstruction.

A Simulation System of Radio Propagation Effect Evaluation Based on GIS

2014 ◽  
Vol 687-691 ◽  
pp. 3053-3057
Author(s):  
Hong Ming Wang ◽  
Jun Dong
Keyword(s):  
Wave Propagation ◽  
Radio Wave ◽  
Simulation System ◽  
Radio Wave Propagation ◽  
System Structure ◽  
Effect Evaluation ◽  
Propagation Effects ◽  
Function Modules ◽  
Gis System ◽  
Effects Assessment

Construction of wave propagation effects assessment simulation system based on GIS, for enhancing the capabilities of our military radio environment awareness, forecasting, warning and assessment of the effect is significant.In this paper, the original geographic data and radio wave propagation data will be unified as vector and raster data into GIS system structure based on ArcObjects components, combined with the development of visual language Visual C++ 6.0, designed and constructed to assess the effect of radio wave propagation simulation system. designed and built a radio wave propagation effects assessment simulation system. The system has data management, scene visualization, effects assessment, graphics output function modules, Achieved wave propagation effects assessment simulation and visualization presentation.

scholarly journals Early Experience with Reduction of Unstable Pelvic Fracture Using a Computer-Aided Reduction Frame

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Jing-Xin Zhao ◽  
Li-Cheng Zhang ◽  
Xiu-Yun Su ◽  
Zhe Zhao ◽  
Yan-Peng Zhao ◽  
...  
Keyword(s):  
Early Experience ◽  
Pelvic Fractures ◽  
Virtual Surgery ◽  
Surgery Simulation ◽  
Reduction Procedure ◽  
Early Experiences ◽  
Computer Aided ◽  
The Mean ◽  
Set Up

Purpose. The optimal closed reduction technique for unstable pelvic fractures remains controversial. The purpose of this study is to verify the effectiveness and report early experiences with the reduction of unstable pelvic fractures using a computer-aided pelvic reduction frame. Methods. From January 2015 to August 2016, a total of 10 patients with unilateral unstable pelvic fractures were included in this study. The surgical reduction procedure was based on the protocol of the computer-aided pelvic reduction frame that we proposed in a previous work. The quality of the reductions achieved using this system was evaluated with residual translational and rotational differences between the actual and virtual reduction positions of pelvis. The duration of the operation was recorded for quality control. Results. The mean times required to set up the frame, to complete the virtual surgery simulation, and to reduce the unstable pelvic fractures were 10.3, 20.9, and 7.5 min, respectively. The maximum residual translational and rotational displacements were less than 6.5 mm and 3.71 degrees, respectively. Conclusions. This computer-aided reduction frame can be a useful tool for the speedy and accurate reduction of unstable pelvic fractures. Further clinical studies should be conducted with larger patient samples to verify its safety and efficacy.

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