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New Findings from ESPCI in Mechanical Engineering Provides New Insights (Intervertebral disc characterization by shear wave elastography: An in vitro...

July 30, 2014



New Findings from ESPCI in Mechanical Engineering Provides New Insights (Intervertebral disc characterization by shear wave elastography: An in vitro preliminary study)

By a News Reporter-Staff News Editor at Journal of Engineering -- New research on Mechanical Engineering is the subject of a report. According to news reporting originating from Paris, France, by VerticalNews correspondents, research stated, "Specific numerical simulation of the spine is a useful tool both in clinic and research. While geometrical personalization of the spine is no more an issue, thanks to recent technological advances, non-invasive personalization of soft tissue's mechanical properties remains a challenge."

Our news editors obtained a quote from the research from ESPCI, "Ultrasound elastography is a relatively recent measurement technique allowing the evaluation of soft tissue's elastic modulus through the measurement of shear wave speed. The aim of this study was to determine the feasibility of elastographic measurements in intervertebral disc. An in vitro approach was chosen to test the hypothesis that shear wave speed can be used to evaluate intervertebral disc mechanical properties and to assess measurement repeatability. In total, 11 oxtail intervertebral discs were tested in compression to determine their stiffness and apparent elastic modulus at rest and at 400 N. Elastographic measurements were performed in these two conditions and compared to these mechanical parameters. The protocol was repeated six times to determine elastographic measurement repeatability. Average shear wave speed over all samples was 5.3 +/- 1.0 m/s, with a repeatability of 7% at rest and 4.6% at 400 N; stiffness and apparent elastic modulus were 266.3 +/- 70.5 N/mm and 5.4 +/- 1.1 MPa at rest, respectively, while at 400 N they were 781.0 +/- 153.8 N/mm and 13.2 +/- 2.4 MPa, respectively."

According to the news editors, the research concluded: "Correlations were found between elastographic measurements and intervertebral disc mechanical properties; these preliminary results are promising for further in vivo application."

For more information on this research see: Intervertebral disc characterization by shear wave elastography: An in vitro preliminary study. Proceedings of the Institution of Mechanical Engineers Part H-Journal of Engineering in Medicine, 2014;228(6):607-615. Proceedings of the Institution of Mechanical Engineers Part H-Journal of Engineering in Medicine can be contacted at: Sage Publications Ltd, 1 Olivers Yard, 55 City Road, London EC1Y 1SP, England.

The news editors report that additional information may be obtained by contacting C. Vergari, ESPCI ParisTech, Inst Langevin Ondes & Images, CNRS UMR7587, INSERM U979, Paris, France. Additional authors for this research include P. Rouch, G. Dubois, D. Bonneau, J. Dubousset, M. Tanter, J.L. Gennisson and W. Skalli.

Keywords for this news article include: Paris, France, Europe, Mechanical Engineering

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Source: Journal of Engineering


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