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    Ultrasonics. 1992;30(6):389-95.

    The effect of bone structure on ultrasonic attenuation and velocity.

    Source

    Centre for Bone and Body Composition, Academic Unit of Medical Physics, University of Leeds, Leeds General Infirmary, UK.

    Abstract

    The relationship between the structure of bovine cancellous bone, and its ultrasonic propagation parameters is investigated by means of a novel technique involving the application of large static loads, thereby changing the porosity in a controlled manner. The results show that for frequencies in the range 0.4 to 1 MHz, porosity decreases up to 35% are associated with a reduction in attenuation of up to 500%, whereas the velocity increases by roughly 35% for the same changes. The data taken overall suggest that in determining the ultrasonic attenuation coefficient at these frequencies, the amount of material in a given bone section is significantly less important than the distribution of that material.

    PMID:
    1440986
    [PubMed - indexed for MEDLINE]

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