Efficient Nonlinear FEM for Soft Tissue Modelling and Its GPU Implementation within the Open Source Framework SOFA

Accurate biomechanical modelling of soft tissue is a key aspect for achieving realistic surgical simulations. However, because medical simulation is a multi-disciplinary area, researchers do not always have sufficient resources to develop an efficient and physically rigorous model for organ deformation. We address this issue by implementing a CUDA-based nonlinear finite element model into the SOFA open source framework. The proposed model is an anisotropic visco-hyperelastic constitutive formulation implemented on a graphical processor unit (GPU). After presenting results on the model's performance we illustrate the benefits of its integration within the SOFA framework on a simulation of cataract surgery.

[1]  Ahmed Elsheikh,et al.  Experimental Assessment of Human Corneal Hysteresis , 2008, Current eye research.

[2]  Kurt A. Buzard,et al.  Biomechanics of the cornea , 1991, Photonics West - Lasers and Applications in Science and Engineering.

[3]  Albert S. Kobayashi,et al.  Viscoelastic properties of human cornea , 1973 .

[4]  Stephane Cotin,et al.  EP4A: Software and Computer Based Simulator Research: Development and Outlook SOFA—An Open Source Framework for Medical Simulation , 2007, MMVR.

[5]  Y Zeng,et al.  A comparison of biomechanical properties between human and porcine cornea. , 2001, Journal of biomechanics.

[6]  Sébastien Ourselin,et al.  Real-Time Nonlinear Finite Element Analysis for Surgical Simulation Using Graphics Processing Units , 2007, MICCAI.

[7]  K. Miller,et al.  Total Lagrangian explicit dynamics finite element algorithm for computing soft tissue deformation , 2006 .

[8]  T. Belytschko,et al.  A uniform strain hexahedron and quadrilateral with orthogonal hourglass control , 1981 .

[9]  Herve Delingette,et al.  Real-Time Elastic Deformations of Soft Tissues for Surgery Simulation , 1999, IEEE Trans. Vis. Comput. Graph..

[10]  Sébastien Ourselin,et al.  High-Speed Nonlinear Finite Element Analysis for Surgical Simulation Using Graphics Processing Units , 2008, IEEE Transactions on Medical Imaging.

[11]  A. Elsheikh,et al.  Experimental assessment of corneal anisotropy. , 2008, Journal of refractive surgery.

[12]  Pheng-Ann Heng,et al.  An improved scheme of an interactive finite element model for 3D soft-tissue cutting and deformation , 2005, The Visual Computer.