By a News Reporter-Staff News Editor at Journal of Technology -- Investigators publish new report on Biomechanics. According to news originating from Oxford, United Kingdom, by VerticalNews correspondents, research stated, "This paper presents the AutoQual elastography method: a novel algorithm that improves the quality of 2D displacement field calculation from ultrasound radio frequency (RE) sequences of acutely ruptured Achilles tendons to determine image-lateral strain fields and has potential use for ligaments and muscles. This method uses 2D bicubic spline interpolation of the RF signal, Quality Determined Search, Automatic Search Range and Adaptive Block Size components as a novel combination that is designed to improve continuity and decrease displacement field noise, especially in areas of low signal strength."
Our news journalists obtained a quote from the research from the University of Oxford, "We present a simple experiment for quantitatively comparing the AutoQual method to a multiscale (MS) elastography method from ultrasound RF sequences of a 5% agar phantom for rigid body motion and known lateral strain loads with speeds up to 5 mm/s. We finally present examples of four in vivo Achilles tendons in various damage states and with manual or artificially controlled passive flexion of the foot. Results show that the AutoQual method offers a substantial improvement on the MS method, achieving similar performance for rigid body tracking at all speeds, a lower normalized square error at all strains induced and a more continuous strain field at higher compression rates. AutoQual also showed a greater average normalized cross correlation for image blocks in the area of interest, a lower standard deviation of the strain field and a visually more acceptable point tracking for in vivo examples. This work demonstrates lateral ultrasound elastography which is robust to the complex passive motion of the Achilles and to various imaging artifacts associated with imaging tendon rupture."
According to the news editors, the research concluded: "This method potentially has a wide clinical application for assessing in vivo strains in and hence mechanical function of any near skin surface tissues that are longitudinally loaded."
For more information on this research see: The AutoQual ultrasound elastography method for quantitative assessment of lateral strain in post-rupture Achilles tendons. Journal of Biomechanics, 2013;46(15):2695-2700. Journal of Biomechanics can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Journal of Biomechanics - www.elsevier.com/wps/product/cws_home/321)
The news correspondents report that additional information may be obtained from P.G. Brown, University of Oxford, Botnar Res Center, Nuffield Dept. of Orthopaed Rheumatol & Musculoskelet, Oxford, United Kingdom. Additional authors for this research include J. Alsousou, A. Cooper, M.S. Thompson and J.A. Noble.
Keywords for this news article include: Oxford, Europe, Biomechanics, United Kingdom
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