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...

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Vydáno v:2021 43rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) Ročník 2021; s. 2847 - 2851
Hlavní autoři: Duroy, Anne-Lise, Detti, Valerie, Coulon, Agnes, Basset, Olivier, Brusseau, Elisabeth
Médium: Konferenční příspěvek Journal Article
Jazyk:angličtina
Vydáno: United States IEEE 01.11.2021
Témata:
Algorithms
Biology
Elasticity Imaging Techniques
Imaging
Media
Partial differential equations
Phantoms
Phantoms, Imaging
Tensors
Ultrasonic imaging
ISSN:2694-0604, 2694-0604
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Shrnutí: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.
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ISSN:2694-0604
2694-0604
DOI:10.1109/EMBC46164.2021.9630570