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Related Experiment Video

Updated: Mar 20, 2026

Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation
09:05

Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation

Published on: October 20, 2016

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Optimization-Based Speckle Tracking Algorithm for Left Ventricle Strain Estimation: A Feasibility Study.

Hanan Khamis, Sara Shimoni, Andreas Hagendorff

    IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
    |May 24, 2016
    PubMed
    Summary

    A new algorithm, K-SAD, improves speckle tracking echocardiography (STE) by integrating physiological smoothness constraints. This novel method enhances accuracy in calculating myocardial strains and left ventricle function, even in noisy conditions.

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    Last Updated: Mar 20, 2026

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    Evaluation of Left Ventricular Structure and Function using 3D Echocardiography
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    Evaluation of Left Ventricular Structure and Function using 3D Echocardiography

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    Area of Science:

    • Cardiology
    • Medical Imaging
    • Biomedical Engineering

    Background:

    • Speckle tracking echocardiography (STE) is vital for assessing left ventricle function and myocardial strain.
    • STE accuracy is compromised by speckle decorrelation noise, leading to irregular displacement fields and unreliable strain results.
    • Current STE methods' strain outcomes vary due to vendor-specific implementations and smoothing techniques.

    Purpose of the Study:

    • Introduce a novel algorithm, K-SAD, for enhanced myocardial strain analysis.
    • Integrate physiological smoothness constraints into an optimization process to mitigate noise effects in STE.
    • Evaluate K-SAD's performance against commercial products and simulated data for accuracy and reliability.

    Main Methods:

    • Developed K-SAD algorithm incorporating a physiological smoothness constraint within an optimization framework.
    • Processed simulated B-mode echocardiographic clips (healthy and abnormal cases) using K-SAD.
    • Analyzed strain data from 410 healthy subjects and compared K-SAD results with a leading commercial STE product.

    Main Results:

    • K-SAD demonstrated good agreement with ground-truth simulated phantom data for global mid-wall, subendocardial, and regional longitudinal strains.
    • Peak global longitudinal systolic strain values in healthy subjects were consistent across basal, mid, and apical regions (-17.02 ± 4.02%, -19.00 ± 3.45%, -19.72 ± 5.06%).
    • K-SAD exhibited statistically similar results for high-quality and lower-quality image cohorts, indicating robustness under noisy conditions.

    Conclusions:

    • K-SAD significantly reduces sensitivity to speckle noise in STE by employing a physiologically constrained optimization process.
    • The novel algorithm enhances the accuracy of myocardial strain calculations, improving left ventricle function assessment.
    • K-SAD offers a more reliable and accurate approach to STE, overcoming limitations of conventional methods and vendor variations.