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Estimating elasticity in heterogeneous phantoms using Digital Image Elasto-Tomography

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Abstract

Results from the application of a Digital Image Elasto-Tomography (DIET) system to elasticity distribution estimation in heterogeneous phantoms are presented. Two simple phantoms comprising distinct hard and soft regions were created from silicone, with harmonic surface motion data captured using a steady-state stereo imaging setup. A two-parameter approach to estimating stiffness distribution was used, applying both corroborative and contradictive methods to the inverse problem. The contradictive approach proved more robust in the presence of error in a priori stiffness assumption. These contrast based methods have the ability to reduce the number of parameters required for shape-based stiffness reconstructions, and present a novel approach to inclusion imaging in elastography.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand

    Ashton Peters, J. Geoffrey Chase & Elijah E. W. Van Houten

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  1. Ashton Peters
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  2. J. Geoffrey Chase
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  3. Elijah E. W. Van Houten
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Correspondence to J. Geoffrey Chase.

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Peters, A., Chase, J.G. & Van Houten, E.E.W. Estimating elasticity in heterogeneous phantoms using Digital Image Elasto-Tomography. Med Biol Eng Comput 47, 67–76 (2009). https://doi.org/10.1007/s11517-008-0368-1

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  • DOI: https://doi.org/10.1007/s11517-008-0368-1

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