Title: Predictions of angle dependent tortuosity and elasticity effects on sound propagation in cancellous bone
Authors: Ayguen, Haydar ×
Attenborough, Keith
Postema, Michiel
Lauriks, Walter
Langton, Christian M #
Issue Date: Dec-2009
Publisher: Acoustical soc amer amer inst physics
Series Title: Journal of the acoustical society of america vol:126 issue:6 pages:3286-3290
Abstract: The anisotropic pore structure and elasticity of cancellous bone cause wave speeds and attenuation in cancellous bone to vary with angle. Previously published predictions of the variation in wave speed with angle are reviewed. Predictions that allow tortuosity to be angle dependent but assume isotropic elasticity compare well with available data on wave speeds at large angles but less well for small angles near the normal to the trabeculae. Claims for predictions that only include angle-dependence in elasticity are found to be misleading. Audio-frequency data obtained at audio-frequencies in air-filled bone replicas are used to derive an empirical expression for the angle-and porosity-dependence of tortuosity. Predictions that allow for either angle dependent tortuosity or angle dependent elasticity or both are compared with existing data for all angles and porosities.
ISSN: 0001-4966
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Soft Matter and Biophysics
× corresponding author
# (joint) last author

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