title: A virtual surgical training system that simulates cutting of soft tissue using a modified pre-computed elastic model.
abstract: This work presents a surgical training system that incorporates cutting operation of soft tissue simulated based on a modified pre-computed linear elastic model in the Simulation Open Framework Architecture (SOFA) environment. A precomputed linear elastic model used for the simulation of soft tissue deformation involves computing the compliance matrix a priori based on the topological information of the mesh. While this process may require a few minutes to several hours, based on the number of vertices in the mesh, it needs only to be computed once and allows real-time computation of the subsequent soft tissue deformation. However, as the compliance matrix is based on the initial topology of the mesh, it does not allow any topological changes during simulation, such as cutting or tearing of the mesh. This work proposes a way to modify the pre-computed data by correcting the topological connectivity in the compliance matrix, without re-computing the compliance matrix which is computationally expensive.
authors.forename: Kyaw Kyar
authors.initials: KK
authors.lastname: Toe
authors.forename: Weimin
authors.initials: W
authors.lastname: Huang
authors.forename: Tao
authors.initials: T
authors.lastname: Yang
authors.forename: Yuping
authors.initials: Y
authors.lastname: Duan
authors.forename: Jiayin
authors.initials: J
authors.lastname: Zhou
authors.forename: Yi
authors.initials: Y
authors.lastname: Su
authors.forename: Soo-Kng
authors.initials: SK
authors.lastname: Teo
authors.forename: Selvaraj Senthil
authors.initials: SS
authors.lastname: Kumar
authors.forename: Calvin Chi-Wan
authors.initials: CC
authors.lastname: Lim
authors.forename: Chee Kong
authors.initials: CK
authors.lastname: Chui
authors.forename: Stephen
authors.initials: S
authors.lastname: Chang
mesh_terms: D003198:Computer Simulation; D004501:Education, Medical / Q000379:methods*; D013502:General Surgery / Q000193:education*; D006801:Humans; D016014:Linear Models; D065287:Robotic Surgical Procedures / Q000193:education*; D014584:User-Computer Interface