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Two-dimensional echocardiography in mitral annulus calcification.

I Kronzon, J Mitchell, J Shapiro

    AJR. American Journal of Roentgenology
    |February 1, 1980
    PubMed
    Summary
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    Two-dimensional echocardiography accurately identifies the location and size of mitral annular calcification, offering superior diagnostic capabilities compared to M-mode echocardiography for this condition.

    Area of Science:

    • Cardiology
    • Medical Imaging
    • Echocardiography

    Background:

    • Mitral annular calcification (MAC) is a common finding.
    • Accurate assessment of MAC extent and location is crucial for patient management.
    • M-mode echocardiography can detect MAC but has limitations in defining its extent.

    Purpose of the Study:

    • To compare the diagnostic capabilities of M-mode and two-dimensional (2D) echocardiography in evaluating mitral annular calcification.
    • To determine if 2D echocardiography provides a more comprehensive assessment of MAC compared to M-mode.

    Main Methods:

    • 18 patients with fluoroscopically confirmed mitral annular calcification were studied.
    • M-mode and 2D echocardiography were performed on these patients.
    • 20 control patients without MAC were included for comparison.

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    Main Results:

    • M-mode echocardiography showed typical echoes of MAC but could not determine its extent.
    • 2D echocardiography visualized MAC as a dense, ellipsoidal echo at the atrioventricular junction (long axis) and below the mitral valve (short axis).
    • These specific 2D patterns were absent in control subjects.

    Conclusions:

    • 2D echocardiography precisely establishes the site and extent of mitral annular calcification.
    • 2D echocardiography minimizes diagnostic errors associated with M-mode echocardiography.
    • 2D echocardiography is superior to M-mode for recognizing mitral annular calcification.