Hi all,
In the paper below, bone attenuation is measured 13.3 dB/cm at 1 MHz. I want to use this attenuation value in pstdElastic2D simulation which attenuation unit is dB/(MHz^2 cm). So, I divided 13.3 by 1^2 and I got 13.3 dB/(MHz^2 cm).
Do you think it is a correct way to get the attenuation from the dB/cm unit?
Best,
Michael
[1]Pinton, Gianmarco, et al. "Attenuation, scattering, and absorption of ultrasound in the skull bone." Medical physics 39.1 (2012): 299-307.
Yes, that seems correct if you can assume an f^2 frequency dependence. Note, the value of 13.3 dB/cm is for the total attenuation (including scattering). If you want to use the Pinton values in pstdElastic2D, I would suggest using the actual absorption values, which are 2.7 dB/cm for the compression absorption and 5.4 dB/cm for the shear absorption.
Dr. Treeby,
Thank you for your suggestion. Actually, I think there are different numbers for attenuation and approaches for the skull simulations. For example, the skull is modeled as a uniform medium in one of your papers which you used shear attenuation 19.5 dB/(MHz^2 cm) and compressional attenuation 8.83 dB/(MHz^2 cm).
Best,
Michael
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