ArticlePhysics in medicine and biology2021
Frequency-dependent analysis of ultrasound apparent absorption coefficient in multiple scattering porous media: application to cortical bone.
Article in Physics in medicine and biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
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- Stochastic numerical head phantoms to enable virtual imaging studies of transcranial photoacoustic computed tomography.Photoacoustics · 2026Article
- The speed of sound in skull-mimicking digital phantoms depends on the microstructure.Physics in medicine and biology · 2025Article
- Influence of bone microstructure on ultrasound loss through skull-mimicking digital phantoms.Medical physics · 2025Article
- Ultrasound Characterization of Cortical Bone Using Shannon Entropy.Ultrasound in medicine & biology · 2023Article
- Ultrasound Scattering in Cortical Bone.Advances in experimental medicine and biology · 2022Article
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3 authors.
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Abstract
The effect of matrix viscoelastic absorption on frequency-dependent attenuation in porous structures mimicking simplified cortical bone is addressed in this numerical study. An apparent absorption is defined to quantify the difference between total attenuation (resulting from both absorption and scattering) and attenuation exclusively due to scattering. A power-law model is then used to describe the frequency-dependent apparent absorption as a function of pore diameter and density. The frequency response of the porous structures to a Gaussian pulse is studied to determine the frequency range over which the system can be considered linear. The results show that for low scattering regimes (normalized frequency [Formula: see text]0.80), the system and its apparent absorption can be considered linear. Hence, the total attenuation coefficient results from the summation of scattering and absorption coefficients. However, for highly scattering regimes, the system can no longer be considered linear, as the apparent absorption vs. frequency deviates from a linear trend. As the pore density increases, the apparent absorption coefficient increases as well.
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