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Updated: Jul 16, 2026

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
08:13

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography

Published on: February 16, 2016

Left ventricular myocardial performance index in closely-related relatives of patients with dilated cardiomyopathy

Anant Khositseth, Prapat Ausayapao

    International Journal of Cardiology
    |March 17, 2007
    PubMed

    Insights

    First-degree relatives of children with dilated cardiomyopathy show a higher left ventricular myocardial performance index. This finding suggests the index may aid in early detection of familial dilated cardiomyopathy in asymptomatic individuals.

    Area of Science:

    • Cardiology
    • Genetics
    • Pediatrics

    Background:

    • Dilated cardiomyopathy (DCM) is a serious heart condition with a genetic component.
    • Early detection of familial DCM in at-risk relatives is crucial for timely intervention.
    • Assessing subclinical cardiac dysfunction in asymptomatic relatives is challenging.

    Discussion:

    • This study investigated cardiac function in first-degree relatives of children diagnosed with DCM.
    • Evaluated parameters included left ventricular (LV) dimensions, systolic function (shortening fraction, ejection fraction), and LV myocardial performance index (MPI).
    • While standard LV dimensions and systolic function measures were comparable to controls, LV MPI was significantly elevated in relatives.

    Key Insights:

    • The left ventricular myocardial performance index (LV MPI) was significantly greater in first-degree relatives of children with DCM compared to controls.
    • Standard echocardiographic measures of left ventricular dimensions and systolic function did not differ significantly between groups.
    • LV MPI may serve as a sensitive indicator for subclinical cardiac changes in familial dilated cardiomyopathy.

    Outlook:

    • Further research is warranted to validate LV MPI as a reliable biomarker for early familial DCM detection.
    • Longitudinal studies can assess the predictive value of elevated LV MPI for future DCM development.
    • Integrating LV MPI into routine screening protocols for at-risk families could improve patient outcomes.

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