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    Syringomyelia and the fluid-structure interactions of a cerebrospinal waveguide

    Access Status
    Fulltext not available
    Authors
    Elliott, N.
    Lucey, Anthony
    Lockerby, D.
    Brodbelt, A.
    Date
    2014
    Type
    Conference Paper
    
    Metadata
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    Citation
    Elliott, N. and Lucey, A. and Lockerby, D. and Brodbelt, A. 2014. Syringomyelia and the fluid-structure interactions of a cerebrospinal waveguide, in Proceedings of the ASME Pressure Vessels and Piping Conference Vol 4: Fluid-Structure Interaction, Jul 20-24 2014. Anaheim, CA: ASME.
    Source Title
    American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
    DOI
    10.1115/PVP2014-29095
    ISBN
    9780791846018
    School
    School of Civil and Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/39418
    Collection
    • Curtin Research Publications
    Abstract

    In the disease syringomyelia, fluid-filled cavities, called syrinxes, form in the spinal cord. The expansion of these pathological pressure vessels compresses the surrounding nerve fibers and blood supply, which is associated with neurological damage. We investigate the spinal wave-propagation characteristics, principally to serve as a reference for more anatomically-detailed models. The spinal cord is modeled as an elastic cylinder, which becomes an annulus containing inviscid fluid when a syrinx is included. This is surrounded by an annulus of in-viscid fluid, representing the cerebrospinal fluid occupying the subarachnoid space, with an outer rigid boundary approximating the dura mater. The axisymmetric harmonic motion is solved as an eigenvalue problem. We present dispersion diagrams and describe the physical mechanism of each wave mode. We identify potentially damaging syrinx fluid motions and tissue stress concentrations from the eigenvectors. Finally, we determine the dependence of each wave mode on syrinx radius and cord tissue compressibility.

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    • Fluid–structure interactions in a cylindrical layered wave guide with application in the spinal column to syringomyelia
      Elliott, N.; Lucey, Anthony; Lockerby, D.; Brodbelt, A. (2017)
      © 2016Syringomyelia is a disease of the spinal cord in which fluid-filled cavities, called syrinxes, form and expand, compressing the surrounding neural tissue and producing neurological damage. This condition can occur ...
    • Wave propagation in an elastic waveguide: fluid-structure interactions in a spinal disease
      Elliott, Novak; Lucey, Anthony; Lockerby, D.; Brodbelt, A. (2010)
      Syringomyelia is a disease in which fluid-filled cavities, called syrinxes, form in the spinal cord (SC). The progressive expansion of syrinxes over many years compresses the surrounding nerve fibres and blood vessels, ...
    • Syrinx fluid transport: modeling pressure-wave-induced flux across the spinal pial membrane
      Elliott, Novak (2012)
      Syrinxes are fluid-filled cavities of the spinal cord that characterize syringomyelia, a disease involving neurological damage. Their formation and expansion is poorly understood, which has hindered successful treatment. ...
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