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Modeling ultrasound attenuation in porous structures with mono-disperse random pore distributions using the independent scattering approximation: A 2D simulation study.

Abstract

The validity of the Independent Scattering Approximation (ISA) to predict the frequency dependent attenuation in 2D models of simplified cortical bone is studied. Attenuation of plane waves at central frequencies ranging from 1 to 8 MHz propagating in geometries with mono-disperse random pore distributions having pore diameter and pore density in the range of those of cortical bone are evaluated by Finite Difference Time Domain numerical simulations. An approach to assess the multiple scattering of waves in random media is discussed to determine the pore diameter ranges at which the ISA is applicable. A modified version of ISA is proposed to more accurately predict the attenuation in porosity ranges where it would traditionally fail. The results show that the modified ISA can model the frequency-dependent attenuation of ultrasonic wave with pore diameter and density ranges comparable to those of cortical bone with less than 10% error.

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  • Authors+Show Affiliations

    ,

    North Carolina State University, Raleigh, North Carolina, 27695, UNITED STATES.

    ,

    North Carolina State University, Raleigh, North Carolina, UNITED STATES.

    Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, North Carolina, UNITED STATES.

    Source

    Pub Type(s)

    Journal Article

    Language

    eng

    PubMed ID

    31207588

    Citation

    Yousefian, Omid, et al. "Modeling Ultrasound Attenuation in Porous Structures With Mono-disperse Random Pore Distributions Using the Independent Scattering Approximation: a 2D Simulation Study." Physics in Medicine and Biology, 2019.
    Yousefian O, Karbalaeisadegh Y, Muller M. Modeling ultrasound attenuation in porous structures with mono-disperse random pore distributions using the independent scattering approximation: A 2D simulation study. Phys Med Biol. 2019.
    Yousefian, O., Karbalaeisadegh, Y., & Muller, M. (2019). Modeling ultrasound attenuation in porous structures with mono-disperse random pore distributions using the independent scattering approximation: A 2D simulation study. Physics in Medicine and Biology, doi:10.1088/1361-6560/ab2a32.
    Yousefian O, Karbalaeisadegh Y, Muller M. Modeling Ultrasound Attenuation in Porous Structures With Mono-disperse Random Pore Distributions Using the Independent Scattering Approximation: a 2D Simulation Study. Phys Med Biol. 2019 Jun 17; PubMed PMID: 31207588.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Modeling ultrasound attenuation in porous structures with mono-disperse random pore distributions using the independent scattering approximation: A 2D simulation study. AU - Yousefian,Omid, AU - Karbalaeisadegh,Yasamin, AU - Muller,Marie, Y1 - 2019/06/17/ PY - 2019/6/18/entrez PY - 2019/6/18/pubmed PY - 2019/6/18/medline KW - Attenuation KW - Cortical Bone KW - FDTD KW - Independent Scattering Approximation KW - Ultrasound JF - Physics in medicine and biology JO - Phys Med Biol N2 - The validity of the Independent Scattering Approximation (ISA) to predict the frequency dependent attenuation in 2D models of simplified cortical bone is studied. Attenuation of plane waves at central frequencies ranging from 1 to 8 MHz propagating in geometries with mono-disperse random pore distributions having pore diameter and pore density in the range of those of cortical bone are evaluated by Finite Difference Time Domain numerical simulations. An approach to assess the multiple scattering of waves in random media is discussed to determine the pore diameter ranges at which the ISA is applicable. A modified version of ISA is proposed to more accurately predict the attenuation in porosity ranges where it would traditionally fail. The results show that the modified ISA can model the frequency-dependent attenuation of ultrasonic wave with pore diameter and density ranges comparable to those of cortical bone with less than 10% error. SN - 1361-6560 UR - https://www.unboundmedicine.com/medline/citation/31207588/Modeling_ultrasound_attenuation_in_porous_structures_with_mono-disperse_random_pore_distributions_using_the_independent_scattering_approximation:_A_2D_simulation_study L2 - https://doi.org/10.1088/1361-6560/ab2a32 DB - PRIME DP - Unbound Medicine ER -