Multi-scale Simulation for Microsurgery Trainer

For use in a Virtual Reality based training system for surgical micromanipulation, we have developed a fast multi-scale FEM algorithm that concentrates detail where needed while still handling global deformations. The resulting 6-to-7-fold speed up is promising for the development of real-time simulation of the mechanical response of a virtual organ or tissue. FEM algorithm uses elements from multiple levels in a hierarchy of mesh similar to the progressive mesh. This algorithm has been integrated with a visual/haptic feedback workstation.

Authors

• Kian Meng Lim
• Fei Wang 0010
• Tim Poston
• Li Zhang
• Chee Leong Teo
• Etienne Burdet

Keywords

• Microsurgery
• Surgery
• Deformable models
• Microscopy
• Haptic interfaces
• Computational modeling
• Force feedback
• Skin
• Needles
• Elasticity
• Finite Element Method
• Fast Algorithm
• Simulated Evolution
• Real-time Simulation
• Multiscale Algorithm
• Root Mean Square Error
• Degrees Of Freedom
• Soft Tissue
• Computation Time
• Fine Scale
• Visual Feedback
• Point-like
• Series Of Solutions
• Stiffness Matrix
• Visual Display
• Fine Mesh
• Appendix For Details
• Slight Loss
• Small Elements
• Concentrated Force
• Surgical Simulation
• Global Stiffness Matrix