01-04-2010, 12:14 AM
Virtual surgery.ppt (Size: 4.86 MB / Downloads: 525)
VIRTUAL SURGERY
CONTENTS
1. INTRODUCTION
2. WHAT IS VIRTUAL SURGERY?
3. VIRTUAL REALITY APPLICATIONS IN SURGERY
4. VIRTUAL SURGERY SIMULATION
5. WHAT IS A VIRTUAL SURGERY
SIMULATOR?
6. PHANTOM DESKTOP 3D TOUCH SYSTEM-
HAPTIC INTERFACER
7. IMPORTANCE OF VIRTUAL REALITY IN SURGICAL FIELD
8. CONCLUSION
1. INTRODUCTION
Virtual reality is defined as human computer interface that simulate realistic environments while enabling participant interaction, as a 3D digital world that accurately models actual environment, or simply as cyberspace.
being used as simulators in medical field
provide a good tool to experiment the various complications arise during surgery.
2.WHAT IS VIRTUAL SURGERY?
A Virtual Reality Technique of simulating surgery procedure
The simulator surgery results can be evaluated before the surgery is carried out on real patient
The surgeon can view the anatomy from wide range of angles.
3.VIRTUAL REALITY APPLICATIONS IN SURGERY
Virtual reality application in surgery can be subdivided as follows:
Training and Education.
Surgical Planning
Image Guidance
Tele-surgery
TRAINING AND EDUCATION
Allow users to view the anatomy from a wide range of angles
Fly through organs to examine bodies from inside.
Perform a procedure countless times.
Training methods in medical schools
Enabled development of open abdominal and hollow-tube anastomosis simulators.
Computer-based training has many potential advantages
It is interactive.
¢ An instructor presence is not necessary,
¢ Changes can be made during demonstration
¢ Simulated position and forces can be recorded
¢ Students could also try different technique
SURGICAL PLANNING
Reduces errors, saves life
Can serve as useful adjunct to traditional surgical planning techniques.
CT and MRI scans enabled 3D reconstruction
IMAGE GUIDANCE
Computer Aided Surgery
Robotic Surgery
TELESURGERY
Allows surgeons to operate on people who are physically separated from themselves.
Usually done through a master-slave robot, with imaging supplies through video cameras
4. VIRTUAL SURGERY SIMULATION
3D Image Simulation
Touch Simulation
3D Image Simulation
Generation of 3D model of the part of the body that undergo surgery
Anatomical images can be derived from a series of MRI and CT scans
Software algorithms
Tissues are portrayed as polygonal meshes.
Touch Simulation
Simulating haptic-touch sensation.
Touch signals need to be refreshed.
Soft objects need lower update rates than harder objects.
Calculate forces applied to cut & how they react.
Make physical models of tissues.
5. WHAT IS A VIRTUAL SURGER SIMULATOR?
Consists of
Powerful PC
An interfacer- haptic interfacer
HOW HUMAN SENCE OF TOUCH INTERACTS WITH A VIRTUAL REALITY SYSTEM
6. PHANTOM DESKTOP 3D TOUCH SYSTEM- A HAPTIC INTERFACER
FEATUARS OF PHANTOM DESKTOP 3D TOUCH SYSTEM
Supports a workspace of 6*5*5 inch
Has either 3 or 6 degrees of freedom
Senses the arms position to PC.
Incorporated into desktop display by Reachln Technologies.
GHOST software packages
Applications in medical field
7. IMPORTANCE OF VIRTUAL REALITY IN SURGICAL FIELD
minimizes the number of medical Ëœmistakesâ„¢.
¢ reduces the long length of hospital stays and rest of postoperative complications.
Better training in anatomy and surgical skill
Reduced need for cadavers.
8. CONCLUSION
The benefits of VR systems in medicines have clearly been established in several areas
Including improved training
Better access to services
Increase cost effectiveness
Accuracy in performing certain conventional surgical procedures.
Processing power needed for hardware.
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