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Strain Tensor Elastography: 2D and 3D Visualizations

  • Darío Sosa-CabreraEmail author
  • Karl Krissian
  • Javier González-Fernández
  • Luis Gómez-Déniz
  • Eduardo Rovaris
  • Carlos Castaño-Moraga
  • Juan Ruiz-Alzola
Part of the Advances in Pattern Recognition book series (ACVPR)

Abstract

Elastography measures the elastic properties of soft tissues using principally ultrasound (US) or magnetic resonance (MR) signals. The elastic behavior of tissues can be analyzed with tensor signal processing. Different approaches have been developed to estimate and image the elastic properties in the tissue. In ultrasound elastography, the estimation of the displacement and strain fields is mostly based on measures computed from the Radio Frequency signals, such as time-domain cross-correlation. We propose to estimate the displacement field from two consecutive B-mode images using a multiscale optical flow method. The tensor strain field can then be plotted as ellipsoids, visualizing in a single image the standard scalar parameters that are usually represented separately. This technique can offer physicians the possibility of extracting new discriminant and useful parameters related to the elastic behavior of tissues. Although clinical validation is still needed, our experiments from finite element and ultrasound simulations display consistent and reliable results.

Keywords

Axial Strain Strain Tensor Diffusion Tensor Magnetic Resonance Imaging Ultrasound Elastography Elasticity Imaging 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag London Limited 2009

Authors and Affiliations

  • Darío Sosa-Cabrera
    • 1
    Email author
  • Karl Krissian
    • 1
  • Javier González-Fernández
    • 1
  • Luis Gómez-Déniz
    • 1
  • Eduardo Rovaris
    • 1
  • Carlos Castaño-Moraga
    • 1
  • Juan Ruiz-Alzola
    • 1
  1. 1.Center for Technology in Medicine, Dept. Señales y ComunicacionesUniversity of Las Palmas de Gran CanariaSPAIN

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