Rectus Femoris Muscle Volume Estimate by Ultrasonography
نویسندگان
چکیده
Imaging techniques allow in vivo measurement of parameters studied in vitro or ex vivo and thus greater reliability regarding muscle mechanics in real situations. Some muscle architecture parameters are directly related to force production, mainly the volume. It can be estimated by the sum of segmental volumes (product of the sum of crosssectional areas and the distance between them) of sequential images obtained from magnetic resonance imaging. Ultrasound has also been used to obtain the volume utilizing regression equations or the same method as in magnetic resonance images. However, the prolonged time for acquisition and processing many images can be a limiting factor. Therefore, this paper presents a model based on the Cavalieri ́s principle to estimate the rectus femoris volume. Different estimations of a phantom volume were performed with 2, 3, 4, 5, 6, 7 and 8 cross-sectional images to define a protocol with the minimum number of images sufficient for a reliable estimate. The 4 slices prediction approached the experimental value with a mean error of 1.12%.
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