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Type: Journal article
Title: Subject-specific body segment parameters' estimation using biplanar X-rays: a feasibility study
Author: Sandoz, Baptiste
Laporte, Sebastien
Skalli, Wafa
Mitton, David
Citation: Computer Methods in Biomechanics and Biomedical Engineering, 2010; 13(6):649-654
Publisher: Informa Healthcare
Issue Date: 2010
ISSN: 1476-8259
Organisation: Centre for Automotive Safety Research (CASR)
Statement of
Baptiste Sandoz, Sébastien Laporte, Wafa Skalli and David Mitton
Abstract: In order to improve the reliability of children's models, the aim of this study was to determine the subject-specific masses and 3D locations of the centres of mass (CoM) of body segments using biplanar X-rays. Previous methods, validated on upper leg segments, were applied to the whole body. Six children and six adults were studied. The low-dose X-ray system EOS® was used to simultaneously get head-to-foot biplanar X-rays in the upright position. Specific methods were used to get 3D reconstructions of bones and body shape. The densities from the literature were used to define the masses. To assess the accuracy of the reconstructions, a force plate was used to compare the mass and the projection of the CoM. A mean distance of 4.5 mm between the measured and the calculated projections of the CoM was found. The mean error between the estimated and the actual body mass was 2.6%. Such a method will be useful in obtaining the body segment parameters in children, hard to obtain using direct measurement techniques.
Keywords: body segment; mass centre; biplanar X-rays
Rights: © 2010 Taylor & Francis
DOI: 10.1080/10255841003717608
Appears in Collections:Centre for Automotive Safety Research publications

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