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  • In vivo measurement of human Achilles tendon morphology using freehand 3-D ultrasound

    Author(s)
    Obst, Steven J
    Newsham-West, Richard
    Barrett, Rod S
    Griffith University Author(s)
    Barrett, Rod
    Obst, Steven J.
    Newsham-West, Richard J.
    Year published
    2014
    Metadata
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    Abstract
    This study investigated the accuracy of phantom volume and length measurements and the reliability of in vivo Achilles tendon (AT) volume, length and cross-sectional area measurements obtained using freehand 3-D ultrasound. Participants (n = 13) were scanned on consecutive days under active and passive loading conditions. In vivo AT length was evaluated using a two-point method and an approach that accounted for AT curvature (centroid method). Three-dimensional ultrasound provided accurate measures of phantom volume and length (mean difference = 0.05 mL and 0.2 mm, respectively) and reliable in vivo measures of AT volume, ...
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    This study investigated the accuracy of phantom volume and length measurements and the reliability of in vivo Achilles tendon (AT) volume, length and cross-sectional area measurements obtained using freehand 3-D ultrasound. Participants (n = 13) were scanned on consecutive days under active and passive loading conditions. In vivo AT length was evaluated using a two-point method and an approach that accounted for AT curvature (centroid method). Three-dimensional ultrasound provided accurate measures of phantom volume and length (mean difference = 0.05 mL and 0.2 mm, respectively) and reliable in vivo measures of AT volume, length and average cross-sectional area, with all intra-class correlations coefficients greater than 0.98. The mean minimally detectable changes for in vivo AT volume, two-point length and centroid length were 0.2 mL, 1.5 mm and 2.0 mm, respectively. Two-point AT length underestimated centroid AT length by 0.7 mm, suggesting that the effect of curvature on in vivo AT length is negligible.
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    Journal Title
    Ultrasound in Medicine & Biology
    Volume
    40
    Issue
    1
    DOI
    https://doi.org/10.1016/j.ultrasmedbio.2013.08.009
    Subject
    Biomechanics
    Clinical Sciences
    Publication URI
    http://hdl.handle.net/10072/62352
    Collection
    • Journal articles

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