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Graphic and haptic simulation for transvaginal cholecystectomy training in NOTES.
Jun J Pan1, Woojin Ahn2, Saurabh Dargar2
1State Key Laboratory of Virtual Reality Technology and Systems, Beihang University, Beijing, China; Center for Modeling, Simulation and Imaging in Medicine, Rensselaer Polytechnic Institute, Troy, USA.
Journal of Biomedical Informatics
|March 17, 2016
Summary
This study introduces VTEST™, a virtual reality simulator for Natural Orifice Transluminal Endoscopic Surgery (NOTES) transvaginal cholecystectomy. The VR simulator offers realistic training, potentially reducing the learning curve for this complex surgical technique.
Area of Science:
- Medical Simulation
- Surgical Training
- Virtual Reality
Background:
- Natural Orifice Transluminal Endoscopic Surgery (NOTES) requires extensive surgeon training.
- Virtual reality (VR) medical simulators offer a risk-free and efficient training alternative.
- A VR simulator, VTEST™, was developed for transvaginal cholecystectomy in NOTES.
Purpose of the Study:
- To develop and evaluate the first VR simulator for transvaginal cholecystectomy within the NOTES framework.
- To provide realistic haptic and visual feedback for surgical training.
- To assess the potential of VR simulation in shortening the learning curve for NOTES procedures.
Main Methods:
- Development of a VR-based surgical simulator (VTEST™) for hybrid NOTES cholecystectomy.
- Utilized a 6DOF haptic device and tracking sensor for hardware.
- Implemented real-time organ deformation using inner-spheres and GPU-based adaptive collision detection.
- Employed a multi-layer hexahedral model for realistic simulation of electrocautery dissection.
Main Results:
- Trainees demonstrated real-time operation with high stability and fidelity.
- Preliminary studies indicated a high degree of realism and usefulness for the hybrid NOTES simulator.
- The system achieved realistic visual performance for gallbladder fat tissue removal.
Conclusions:
- The VTEST™ simulation system was validated by surgeons in a pilot study.
- Participants rated the visual performance and utility highly.
- The simulator shows potential for enhancing surgical skills and reducing training time for NOTES procedures.