Web based vr training simulator for percutaneous rhizotomy
This presentation is the property of its rightful owner.
Sponsored Links
1 / 14

Web-based VR Training Simulator for Percutaneous Rhizotomy PowerPoint PPT Presentation


  • 60 Views
  • Uploaded on
  • Presentation posted in: General

Web-based VR Training Simulator for Percutaneous Rhizotomy. MMVR. Ying Li, Ken Brodlie and Nicholas Phillips *. http://www.scs.leeds.ac.uk/vis/ ying /. School of Computer Studies, University of Leeds, UK. * Department of Neurosurgery, Leeds General Infirmary, UK. January 29, 2000.

Download Presentation

Web-based VR Training Simulator for Percutaneous Rhizotomy

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Web based vr training simulator for percutaneous rhizotomy

Web-based VR Training Simulator for Percutaneous Rhizotomy

MMVR

Ying Li, Ken Brodlie and Nicholas Phillips *

http://www.scs.leeds.ac.uk/vis/ying/

School of Computer Studies, University of Leeds, UK

* Department of Neurosurgery, Leeds General Infirmary, UK

January 29, 2000


Ying li ken brodlie and nicholas phillips

Contents

  • Motivation

  • Surgical procedure

  • The simulator

  • Conclusions


Ying li ken brodlie and nicholas phillips

Motivation

  • The limitation of current VR training systems

Dedicated, expensive equipment

  • The advantages of web based VR environment

Accessible, scalable, low cost

  • It is possible

VRML


Ying li ken brodlie and nicholas phillips

Lesion Generator

The Surgical Procedure - Percutaneous Rhizotomy

Insert needle electrode at correct position & orientation on face

Locate & puncture foramen ovale to access and burn ganglion nerve


Ying li ken brodlie and nicholas phillips

Why is Simulation Useful

  • Highly skilled operation

Especially to locate foramen ovale

  • Awkward to train new staff

Patient awake for part of the procedure

  • Risky

Dissection of carotid artery will affect blood supply to brain


Ying li ken brodlie and nicholas phillips

Our Simulator

  • A simple web-based simulator

  • Aims to be an adjunct to training of neurosurgeons

Shorten period of training

Understanding of procedure and risks involved


Ying li ken brodlie and nicholas phillips

The Simulator-Architecture

  • Client-based system

Download self-contained simulation to client

Web Server

download

VRML world extended with Java EAI to provide simulation

Browser

Single download, no dependency on network


Ying li ken brodlie and nicholas phillips

The Simulator-Virtual World

  • Extend reality by multiple views

From the eye of the surgeon

From the eye of the needle electrode

Eye of the surgeon

Eye of the needle

Java EAI


Ying li ken brodlie and nicholas phillips

The Simulator-Simulating The Surgical Practice

  • Place landmarks

  • Virtual planes


Ying li ken brodlie and nicholas phillips

The Simulator-Manipulating The Tools

  • Controller

  • Rotate and translate

according to rules of surgical procedure

  • Three VRML worlds

co-ordinated through Java EAI


Ying li ken brodlie and nicholas phillips

  • Solution:

Detect collision with eye of the needle electrode

The Simulator-Hitting The Target

  • Collision detection between

objects not supported in VRML

Only collision with viewer


Success

Success


Ying li ken brodlie and nicholas phillips

Oops….


Ying li ken brodlie and nicholas phillips

Conclusion

  • Client-based WWW surgical training system is fast, cheap, …

  • Collision detection between needle and multiple complex objects is efficient

  • Various surgical tasks have been simulated

  • Complexity versus ease of use ?


  • Login