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Proceedings Paper

Direct estimation of the lateral strain field using a double oscillating point spread function with a scaling factor estimator
Author(s): Herve Liebgott; Jeremie Fromageau; Jens Erik Wilhjelm; Didier Vray; Philippe Delachartre
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Paper Abstract

This work presents a new approach to lateral strain estimation in the field of tissue elasticity imaging with ultrasound. A particular beamforming is used to produce a point spread function (PSF) with lateral oscillations. Lateral RF signals can then be considered as the juxtaposition of RF samples coming from the same depth. This enables to estimate the lateral strain with a scaling factor estimator applied to the lateral signals. The approach is validated in simulation on a medium stretched only in the lateral direction. The estimation is unbiased for lateral strain values from 0.5 to 7 % with standard deviation less than 0.5 %.

Paper Details

Date Published: 28 April 2004
PDF: 10 pages
Proc. SPIE 5373, Medical Imaging 2004: Ultrasonic Imaging and Signal Processing, (28 April 2004); doi: 10.1117/12.533023
Show Author Affiliations
Herve Liebgott, CREATIS, CNRS and INSERM (France)
Jeremie Fromageau, CREATIS, CNRS and INSERM (France)
Jens Erik Wilhjelm, Technical Univ. Denmark (Denmark)
Didier Vray, CREATIS, CNRS and INSERM (France)
Philippe Delachartre, CREATIS, CNRS and INSERM (France)

Published in SPIE Proceedings Vol. 5373:
Medical Imaging 2004: Ultrasonic Imaging and Signal Processing
William F. Walker; Stanislav Y. Emelianov, Editor(s)

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