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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...
394

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Related Experiment Video

Updated: Sep 6, 2025

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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Imaging Scheme for 3-D High-Frame-Rate Intracardiac Echography: A Simulation Study.

Mehdi Soozande, Boudewine W Ossenkoppele, Yannick Hopf

    IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
    |June 27, 2022
    PubMed
    Summary

    This study introduces a novel 3-D intracardiac echography imaging scheme for visualizing electromechanical wave propagation during atrial fibrillation ablation. The method achieves high frame rates and resolution, crucial for guiding cardiac procedures.

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    Area of Science:

    • Biomedical Engineering
    • Medical Imaging
    • Cardiac Electrophysiology

    Background:

    • Atrial fibrillation (AF) is a common arrhythmia treated with radiofrequency (RF) ablation.
    • Current 2-D intracardiac echography (ICE) guides catheter navigation but lacks 3-D visualization.
    • 3-D ICE could map electromechanical wave (EW) propagation, essential for understanding cardiac mechanics.

    Purpose of the Study:

    • To propose and evaluate a high volume rate imaging scheme for a 3-D ICE probe.
    • To enable 3-D electromechanical wave imaging (EWI) with high frame rates and image quality.
    • To design a 3-D ICE catheter compatible with existing clinical tools (10-Fr).

    Main Methods:

    • Developed a 3-D ICE probe design utilizing 1-D micro-beamforming in the elevation direction.
    • Implemented a strategy using limited, steered fan-shaped beams to mitigate grating lobe artifacts.
    • Optimized beam divergence and central frequency for required EWI image quality; simulation-based evaluation.

    Main Results:

    • The proposed scheme achieves a high frame rate of 1000 Hz.
    • Demonstrated sufficient spatial resolution for visualizing 3-D EW propagation on large surfaces.
    • Reduced channel count for practical 10-Fr catheter realization while suppressing artifacts.

    Conclusions:

    • The novel 3-D ICE imaging scheme facilitates high-frame-rate visualization of electromechanical wave propagation.
    • This technology has the potential to significantly improve guidance during RF ablation for AF.
    • The simulation results support the feasibility of a 10-Fr 3-D ICE catheter for advanced cardiac imaging.