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Related Concept Videos

Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

476
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,...
476
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...
395

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Related Experiment Video

Updated: Sep 9, 2025

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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Mechanical Wave Analysis at High Frame-Rate Echocardiography: Feasibility, Determinants, and Normal Ranges.

Eswar Sivaraj1, Lasse Lovstakken2, Raphaela Corney1

  • 1Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia.

JACC. Cardiovascular Imaging
|September 2, 2025
PubMed
Summary
This summary is machine-generated.

Mechanical waves (MW) measured by high-frame-rate echocardiography are feasible but show wide normal ranges. Atrial kick (AK) MW velocity may help differentiate normal from abnormal cardiac function, but other MW velocities do not appear significantly altered in subclinical dysfunction.

Keywords:
aortic valve closureatrial kickmechanical wavesmitral valve closure

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Area of Science:

  • Cardiovascular Imaging
  • Biomedical Engineering
  • Physiology

Background:

  • High-frame-rate echocardiography detects mechanical waves (MW), offering potential to assess tissue properties.
  • Current clinical application is limited by potential overlap between normal MW ranges and pathological conditions like LV dysfunction.

Purpose of the Study:

  • To determine the feasibility, normal ranges, and determinants of MW velocities in healthy individuals and cardiac patients.
  • To assess the clinical utility of MW measurements in diagnosing cardiac pathology.

Main Methods:

  • Recruited asymptomatic participants and patients for high-frame-rate echocardiography.
  • Acquired MW signals (atrial kick, aortic valve closure, mitral valve closure) from standard echocardiographic views.
  • Utilized manual and automated methods for measurement, with outlier removal and classification into normal/abnormal groups.

Main Results:

  • Manual MW measurement was feasible in 77-91% of cases, outperforming automated methods.
  • MW velocities showed little correlation with hemodynamic or cardiac function markers.
  • Atrial kick MW velocity was the only parameter significantly different between normal and abnormal echocardiogram groups.

Conclusions:

  • Mechanical wave measurement, particularly atrial kick, is a feasible addition to echocardiography.
  • Normal ranges for MW velocities are wide, limiting their diagnostic specificity.
  • MW velocities do not appear significantly altered in cases of subclinical cardiac dysfunction.