An optimisation-based iterative approach for speckle tracking echocardiography

Azarmehr, Neda, Ye, Xujiong, Howes, Joseph D. , Docking, Benjamin, Howard, James P., Francis, Darrel P. and Zolgharni, Massoud (2020) An optimisation-based iterative approach for speckle tracking echocardiography. Medical & Biological Engineering & Computing, 58 . pp. 1309-1323. ISSN 0140-0118

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An optimisation-based iterative approach for speckle tracking echocardiography
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Item Type:Article
Item Status:Live Archive


Speckle tracking is the most prominent technique used to estimate the regional movement of the heart based on echocardiograms. In this study, we propose an optimised-based block matching algorithm to perform speckle tracking iteratively. The proposed technique was evaluated using a publicly available synthetic echocardiographic dataset with known ground-truth from several major vendors and for healthy/ischaemic cases. The results were compared with the results from the classic (standard) two-dimensional block matching. The proposed method presented an average displacement error of 0.57 pixels, while classic block matching provided an average error of 1.15 pixels. When estimating the segmental/regional longitudinal strain in healthy cases, the proposed method, with an average of 0.32 ± 0.53, outperformed the classic counterpart, with an average of 3.43 ± 2.84. A similar superior performance was observed in ischaemic cases. This method does not require any additional ad hoc filtering process. Therefore, it can potentially help to reduce the variability in the strain measurements caused by various post-processing techniques applied by different implementations of the speckle tracking.

Keywords:Strain imaging, speckle tracking echocardiography, Myocardial deformation, echocardiography
Subjects:G Mathematical and Computer Sciences > G400 Computer Science
Divisions:College of Science > School of Computer Science
ID Code:40594
Deposited On:15 Apr 2020 13:11

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