Suite of meshless algorithms for accurate computation of soft tissue deformation for surgical simulation
نویسندگان
چکیده
منابع مشابه
Suite of finite element algorithms for accurate computation of soft tissue deformation for surgical simulation
Real time computation of soft tissue deformation is important for the use of augmented reality devices and for providing haptic feedback during operation or surgeon training. This requires algorithms that are fast, accurate and can handle material nonlinearities and large deformations. A set of such algorithms is presented in this paper, starting with the finite element formulation and the inte...
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Computation of soft tissue mechanical responses for surgery simulation and image-guided surgery has been dominated by the finite element (FE) method that utilises a mesh of interconnected elements as a computational grid. Shortcomings of such mesh-based discretisation in modelling of surgical cutting include high computational cost and the need for re-meshing in the vicinity of cutting-induced ...
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Soft tissue simulation is an important technique in many biomedical modelling applications. While applications for investigating the functioning of organs do require a physically correct mathematical model, other tasks, such as virtual surgery simulations for training purposes, put a bigger emphasis on speed, ease of use, and a large variety of arbitrary interaction. In such applications a plau...
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A method for computing nonlinear soft–tissue deformation caused by simulated surgical procedures is presented. A mass–spring system is used to model patient individual soft–tissue. Instead of simulating dynamic behaviour, the introduced approach directly estimates the rest position of the system. Very fast and robust nonlinear soft–tissue deformation is computed using an optimization approach. ...
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This paper proposes a hybrid soft tissue model that consists of a multilayer structure and many spheres for surgical simulation system based on meshless. To improve accuracy of the model, tension is added to the three-parameter viscoelastic structure that connects the two spheres. By using haptic device, the three-parameter viscoelastic model (TPM) produces accurate deformationand also has bett...
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ژورنال
عنوان ژورنال: Medical Image Analysis
سال: 2019
ISSN: 1361-8415
DOI: 10.1016/j.media.2019.06.004