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    Thermal-mechanical based Soft Tissue Deformation for Surgery Simulation

    Access Status
    Fulltext not available
    Authors
    Zhong, Yongmin
    Shirinzadeh, B.
    Smith, J.
    Gu, C.
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    Zhong, Yongmin and Shirinzadeh, Bijian and Smith, Julian and Gu, Chengfan. 2010. Thermal-mechanical-based Soft Tissue Deformation for Surgery Simulation. Advanced Robotics. 24: pp. 1719-1739.
    Source Title
    Advanced Robotics
    ISSN
    0169-1864
    School
    Department of Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/40924
    Collection
    • Curtin Research Publications
    Abstract

    Soft tissue deformation is of great importance to virtual reality-based surgery simulation. This paper presents a new methodology for the modeling of soft tissue deformation. This methodology converts soft tissue deformation into thermal–mechanical interaction according to the continuum mixture theory of soft tissues, and thus heat conduction of mechanical load and non-rigid mechanics of motion are combined to govern the dynamics of soft tissue deformation. The mechanical load applied to a soft tissue to cause a deformation is distributed among mass points of the soft tissue according to the principle of heat conduction. A thermal–mechanical model and associated model construction algorithms are developed to describe the distribution of the mechanical load in the tissue. A heat flux-based method is established for derivation of internal forces from the distribution of the mechanical load. Real-time interactive deformation of virtual human organs with force feedback has been achieved by the proposed methodology for surgery simulation. The proposed methodology not only accommodates isotropic, anisotropic and inhomogeneous materials by simply modifying thermal conductivity constants, but it also accepts local and large-range deformation.

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