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Related Experiment Videos

True versus false left ventricular aneurysm: differentiation with MR imaging--initial experience.

Eli Konen1, Naeem Merchant, Carlos Gutierrez

  • 1Department of Medical Imaging, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada. eli.konen@sheba.health.gov.il

Radiology
|June 16, 2005
PubMed
Summary

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Cardiac MRI can differentiate true from false left ventricular aneurysms after myocardial infarction. Marked delayed pericardial enhancement is a key indicator of false aneurysms, warranting further study in larger patient cohorts.

Area of Science:

  • Cardiovascular Imaging
  • Radiology
  • Medical Diagnostics

Background:

  • Left ventricular aneurysms are a complication of myocardial infarction.
  • Distinguishing true from false left ventricular aneurysms is crucial for appropriate management.
  • Cardiac magnetic resonance (MR) imaging offers detailed anatomical and functional assessment.

Purpose of the Study:

  • To evaluate the efficacy of cardiac MR imaging in differentiating true from false left ventricular aneurysms post-myocardial infarction.
  • To identify specific MR imaging characteristics that distinguish between true and false aneurysms.

Main Methods:

  • Retrospective analysis of cardiac MR images from 22 patients with pathologically confirmed left ventricular aneurysms.
  • MR imaging protocol included cine, perfusion, and delayed contrast-enhanced imaging.

Related Experiment Videos

  • Quantitative and qualitative parameters were compared between true and false aneurysms.

    • Main Results:

    • False aneurysms showed a significantly lower orifice-to-diameter ratio (0.73 vs. 1.00) and higher left ventricular end-diastolic volume (202 vs. 136 mL/m²).
    • Inferior wall location and mural thrombus were more frequent in false aneurysms.
    • Marked delayed pericardial enhancement was observed in all four false aneurysms, compared to three true aneurysms, yielding high diagnostic accuracy.

    Conclusions:

    • Cardiac MR imaging, particularly delayed pericardial enhancement, shows promise in differentiating true from false left ventricular aneurysms.
    • Further investigation with larger patient cohorts is necessary to validate these findings.
    • Delayed pericardial enhancement may be a characteristic feature of false left ventricular aneurysms.