2D tissue strain tensor imaging in quasi-static ultrasound elastography

Accurately estimating all strain components in quasi-static ultrasound elastography is crucial for the full analysis of biological media. In this paper, 2D strain tensor imaging is investigated, using a partial differential equation (PDE)-based regularization method. More specifically, this method e...

Full description

Saved in:
Bibliographic Details
Main Authors: Duroy, Anne-Lise, Detti, Valerie, Coulon, Agnes, Basset, Olivier, Brusseau, Elisabeth
Format: Conference Proceeding
Language:English
Subjects:
Algorithms
Biology
Elasticity Imaging Techniques
Imaging
Media
Partial differential equations
Phantoms
Phantoms, Imaging
Tensors
Ultrasonic imaging
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Accurately estimating all strain components in quasi-static ultrasound elastography is crucial for the full analysis of biological media. In this paper, 2D strain tensor imaging is investigated, using a partial differential equation (PDE)-based regularization method. More specifically, this method employs the tissue property of incompressibility to smooth the displacement fields and reduce the noise in the strain components. The performance of the method is assessed with phantoms and in vivo breast tissues. For all the media examined, the results showed a significant improvement in both lateral displacement and strain but also, to a lesser extent, in the shear strain. Moreover, axial displacement and strain were only slightly modified by the regularization, as expected. Finally, the easier detectability of the inclusion/lesion in the final lateral strain images is associated with higher elastographic contrast-to-noise ratios (CNRs), with values in the range [0.68 - 9.40] vs [0.09 - 0.38] before regularization.
ISSN:2694-0604
DOI:10.1109/EMBC46164.2021.9630570