A Novel Twist Deformation Model of Soft Tissue in Surgery Simulation

• 作者: Norman I.Badler Pengpai Wang Wei Sun Xiaorui Zhang
• 来源期刊: 计算机、材料和连续体(英文)
• 学科: 医学
• 关键词: KRIGING INTERPOLATION method membrane ANALOGY TWIST DEFORMATION virtual soft TISSUE surgery simulation
• 年，卷（期）: 2018,（5）
• 页码范围: 297-319
• 页数: 23页
• 分类号: R73

摘要

Real-time performance and accuracy are two most challenging requirements in virtual surgery training.These difficulties limit the promotion of advanced models in virtual surgery,including many geometric and physical models.This paper proposes a physical model of virtual soft tissue,which is a twist model based on the Kriging interpolation and membrane analogy.The proposed model can quickly locate spatial position through Kriging interpolation method and accurately compute the force change on the soft tissue through membrane analogy method.The virtual surgery simulation system is built with a PHANTOM OMNI haptic interaction device to simulate the torsion of virtual stomach and arm,and further verifies the real-time performance and simulation accuracy of the proposed model.The experimental results show that the proposed soft tissue model has high speed and accuracy,realistic deformation,and reliable haptic feedback.