论文标题
针头插入软组织的数学建模和计算机模拟
Mathematical Modeling and Computer Simulation of Needle Insertion into Soft Tissue
论文作者
论文摘要
在这项研究中，我们提出了一种运动方法，将针头插入软组织进行建模。运动方法允许将问题表示为Dirichlet类型（即，由边界的强制运动驱动），因此对组织和针线 - 组织相互作用的未知特性敏感较弱。运动方法中使用的参数是直接从图像确定的。我们的方法使用无网状的Lagrangian显式显式动力学（MTLED）框架来计算软组织变形。针对针线插入有机硅凝胶样品的实验，对所提出的方案进行了验证。我们还提出了针对大脑的针头插入的模拟，证明了该方法对组织的机械特性的不敏感性。
In this study we present a kinematic approach to modeling needle insertion into soft tissues. The kinematic approach allows the presentation of the problem as Dirichlet-type (i.e. driven by enforced motion of boundaries) and therefore weakly sensitive to unknown properties of the tissues and needle-tissue interaction. The parameters used in the kinematic approach are straightforward to determine from images. Our method uses Meshless Total Lagrangian Explicit Dynamics (MTLED) framework to compute soft tissue deformations. The proposed scheme was validated against experiments of needle insertion into silicone gel samples. We also present a simulation of needle insertion into the brain demonstrating the method's insensitivity to assumed mechanical properties of tissue.
