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Related Concept Videos

Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

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Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion,...
304
Imaging Studies for Cardiovascular System II:Types of Echocardiography01:20

Imaging Studies for Cardiovascular System II:Types of Echocardiography

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Echocardiography plays a role in assessing cardiac health and detecting heart conditions, with various types providing critical insights for diagnosis and treatment.
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for...
238
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  11. Speckle-tracking Echocardiography In Dogs: Evaluating Imaging Parameters And Methodological Variability In Global Longitudinal Strain Assessment

Speckle-Tracking Echocardiography in Dogs: Evaluating Imaging Parameters and Methodological Variability in Global Longitudinal Strain Assessment

Jonas E Mogensen1, Maiken B T Bach1, Pernille G Bay1

  • 1Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlægevej 16, 1870 Frederiksberg, Denmark.

Animals : an Open Access Journal From MDPI
|June 13, 2025

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Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation
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High-frequency High-resolution Echocardiography: First Evidence on Non-invasive Repeated Measure of Myocardial Strain, Contractility, and Mitral Regurgitation in the Ischemia-reperfused Murine Heart
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Echocardiographic Approaches and Protocols for Comprehensive Phenotypic Characterization of Valvular Heart Disease in Mice
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View abstract on PubMed

Summary
This summary is machine-generated.

Image foreshortening and heart rate variability significantly impact two-dimensional speckle-tracking echocardiography (2D-STE) measurements of global longitudinal strain (GLS). Optimizing image acquisition is crucial for reliable 2D-STE analysis.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Veterinary Ultrasound

Background:

  • Two-dimensional speckle-tracking echocardiography (2D-STE) provides quantitative myocardial function assessment.
  • Analyzing speckle motion during ultrasound interactions offers insights into cardiac performance.
  • Reliable 2D-STE requires understanding technical parameter influences on strain measurements.

Purpose of the Study:

  • To evaluate the reliability of 2D-STE for global longitudinal strain (GLS) measurement.
  • To assess the impact of technical parameters on 2D-STE accuracy.
  • To compare two GE Healthcare speckle-tracking methods: 2D strain and automated function imaging (AFI).

Main Methods:

  • Prospective study in two cohorts of healthy dogs (n=16 and n=10).
  • Assessed influence of frame rate, heart rate variability, zoom, frequency, and foreshortening on 2D-STE.
Keywords:
2D-STEcaninedogglobal longitudinal strain

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Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation
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  • Compared 2D strain and AFI for agreement and observer variability.

    • Main Results:

    • Foreshortening (p < 0.01) and heart rate variability (p = 0.02) significantly affected speckle-tracking measurements.
    • Zoom, frame rate, and frequency did not show significant impact.
    • AFI systematically underestimated GLS compared to 2D strain, despite strong correlation; intra-/inter-observer CVs were <9%.

    Conclusions:

    • Foreshortening and heart rate variability are critical factors affecting 2D-STE GLS accuracy.
    • While both 2D strain and AFI are reliable, image acquisition optimization is essential.
    • Careful selection of imaging parameters and criteria enhances the dependability of speckle-tracking analysis.
    heart
    myocardial function
    speckle-tracking echocardiography