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Related Concept Videos

Heart Sounds01:15

Heart Sounds

Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V) valves at the...
Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

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, evaluates...

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Cardiac imaging using a phased array ultrasound system. I. System design.

O T vonRamm, F L Thurstone

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    |February 1, 1976
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    A novel ultrasound imaging system offers real-time, high-resolution cardiac imaging. This advanced technology achieves rapid image acquisition and detailed visualization for improved diagnostic capabilities.

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    Area of Science:

    • Medical Imaging
    • Biomedical Engineering
    • Cardiovascular Technology

    Background:

    • Traditional ultrasound systems face limitations in real-time imaging speed and resolution.
    • Accurate tomographic imaging of the heart is crucial for diagnosing cardiac conditions.

    Purpose of the Study:

    • To introduce a new two-dimensional, real-time, high-resolution ultrasound imaging system.
    • To demonstrate the system's capability for generating detailed cardiac images.

    Main Methods:

    • Utilizes a linear array of ultrasound transducers.
    • Employs phased array techniques for rapid beam steering.
    • Generates tomographic images in a circular sector format.

    Main Results:

    • Achieves image acquisition rates of 20 frames per second or higher.
    • Maintains a high resolution of 2-4 mm across the entire field of view.
    • Provides real-time, detailed visualization of cardiac structures.

    Conclusions:

    • The described ultrasound system represents a significant advancement in cardiac imaging.
    • Offers enhanced speed and resolution for improved diagnostic accuracy.
    • Potential for broader clinical applications in cardiology.