Principles of Virtual Reality In Surgical Training - Review by Sanjoy Sanyal
 

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This PPT was presented in 10th National Medical Dental Conference in Seychelles in February 2007. It has been reproduced on 'as is' basis. It was also presented in faculty and students's symposium in ...

This PPT was presented in 10th National Medical Dental Conference in Seychelles in February 2007. It has been reproduced on 'as is' basis. It was also presented in faculty and students's symposium in a medical school in Seychelles. Presenter is Dr Sanjoy Sanyal, (then) Associate Professor and Masters candidate in Royal College of Surgeons of Edinburgh / University of Bath

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Principles of Virtual Reality In Surgical Training - Review by Sanjoy Sanyal Presentation Transcript

  • 1. Principles of Virtual Reality in Surgical Training and Practice Dr Sanjoy Sanyal MBBS, MS (Surgery), ADPHA, ADHRD Presented at 10 th National Medical Dental Conference in Seychelles, February 2007
  • 2. Contents
    • Definition and classification
    • Technical aspects
    • Angled laparoscope simulation
    • Simulated cholecystectomy
    • Simulated gynecological surgery
    • Virtual endoscopy / angiography
    • Augmented reality imaging – Neurosurgery
    • Visible Human Project – NLM
    • Summary
    • References and URLs
  • 3. Definition
    • VR 1 st coined by Jaron Lanier, head of VPL Research Inc. California
    • 2 nd of 3 types of Cyberspace
    • System that provides realistic sense of being immersed in an environment.
    • Computer-generated visual , auditory and tactile multimedia experience.
    • Teledildonics : Virtual sex (or e-sex !!??)
  • 4. Classification
  • 5. Augmented reality systems
  • 6. Technical aspects of VR
    • VR surrounds human body with artificial sensorium of sight, sound and touch.
      • Stereo headphones
      • ‘ Eyephones ’: Head mounted stereo TV goggles – able to simulate 3-D
      • ‘ Datagloves ’: Wired gauntlets
      • ‘ Datasuits ’: Computerized clothing
  • 7. NASA astronaut training in simulated (VR) environment
  • 8. Technical aspects of VR in medicine
    • 3-D computer graphics : Texture mapping
    • Interaction devices and trackers
    • Tactile feedback
    • Force (haptic) feedback : Reverse robotic units
    • Other sensory feedback : Auditory, olfactory etc
  • 9.  
  • 10.  
  • 11.  
  • 12. Angled laparoscope training simulator Spatial reasoning is required to focus objective lens in line with narrow cavity.
  • 13. Angled laparoscope training simulator Virtual environment through a Virtual Laparoscopic Interface: All 4 corners of 6 targets have to be viewed in sequence.
  • 14. Angled laparoscope training simulator After viewing all 4 corners of 1 st target, hit a button: Next object comes into view
  • 15. Angled laparoscope training simulator Go through the whole sequence for all targets.
  • 16. Angled laparoscope training simulator
  • 17. Angled laparoscope training simulator
  • 18. Angled laparoscope training simulator Automatic timer records the time taken
  • 19. Virtual cholecystectomy Occluding tissue is dissected
  • 20. Virtual cholecystectomy Lateral traction is placed on gallbladder and cystic duct is clipped
  • 21. Virtual cholecystectomy
  • 22. Virtual cholecystectomy Cystic duct is successfully cut
  • 23. Simulated gynecological surgery Endoscopic Surgery Simulation : Perform surgical tasks on elasto-dynamic objects in virtual surgery scene in real time; grasping , cutting and setting of clips
  • 24. Simulated gynecological surgery Actively Deforming Objects (ADO) concept introduced for modeling organ motility
  • 25. Simulated gynecological surgery © Dr. H. Cakmak, Institut für Angewandte Informatik, Forschungszentrum Karlsruhe Simulation of pulsatile bleeding, irrigation, suction, animation of coagulation smoke, causing steaming of endoscope lens…
  • 26. Virtual endoscopy
  • 27. Virtual bronchoscopy
  • 28. Virtual colonoscopy
  • 29. Virtual arthroscopy
  • 30. Virtual angiography
  • 31. Augmented reality imaging
  • 32. Augmented reality imaging
  • 33. Augmented reality imaging
  • 34. Augmented reality imaging
  • 35. Visible Human Project – NLM Visible Human Male Database Visible Human Female Database
  • 36. Visible Human Project – NLM
  • 37. Visible Human Project – NLM
  • 38. Virtual scalpel incision Double click on icon to view video of virtual scalpel incision on a simulated knee model
  • 39. Summary
    • VR is an immersive and interactive simulation of an environment
    • VR applications are playing a great role in teaching , training and testing of medical students and graduates
    • Computer simulated 3-D reconstruction of radiological c-sections are important diagnostic tools
  • 40. Summary
    • Computer assisted pre-operative planning and outcome prediction are on the horizon
    • Integration of hybrid (real and imaginary) systems in augmented reality play a role in image-guided surgery
    • VR also plays a role in telemedine and telesurgery
  • 41. References and URLs
    • Edelman V. Touch goes high-tech. http://cms.psychologytoday.com/articles/pto-19960101-000031.html
    • Boulos MNK. University of Plymouth. Virtual reality in medicine
    • Tendick F. University of California San Francisco. http://itsa.ucsf.edu/~frankt/vesta.html
    • Cakmak HK. Institut für Angewandte Informatik, Forschungszentrum Karlsruhe. http://www-kismet.iai.fzk.de/VRTRAIN/phD_main.html
  • 42. References and URLs
    • The Visible Human Project, NLM, NIH: http:// www.nlm.nih.gov/research/visible/visible_human.html
    • University of Colorado, Center of Human Simulation: http:// www.uchsc.edu/sm/chs/browse/browse_m.html
    • http://www.uchsc.edu/sm/chs/browse/browse_f.html
    • NHSIA. Virtual Reality System Predicts Surgical Outcomes. http://www.informatics.nhs.uk/cgi-bin/item.cgi?id =1206   Feb-2005
  • 43. Tailpiece