Ultrasonic Propagation Through Trabecular Bone Modeled as a Random Medium

概要

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A method based on Gaussian random fields was used to generate three media having identical first and second order properties as three original trabecular bone specimens. Attenuation coefficients in both sets of specimens were computed after numerical simulations of ultrasonic wave propagation, using a finite difference time domain (FDTD) code without absorption. In generated media, they exhibited a linear trend for frequency dependence and their values were close to those obtained in the original specimens. These results suggest that combining a simplified description of trabecular bone micro-architecture with a multi-order scattering model could be relevant to predict attenuation due to scattering in trabecular bone.
2008-05-25