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Left ventricular volume determination using Albunex

R J Zotz1, S Genth, A Waaler

  • 1II Medical Clinic, Johannes Gutenberg University, Mainz, Germany.

Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography
|January 1, 1996
PubMed
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Albunex, an intravenous microbubble contrast agent, significantly improves left ventricular volume determination in cardiac patients by enhancing border delineation. This reduces interobserver variability in echocardiographic measurements.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Echocardiography

Background:

  • Accurate left ventricular volume determination is crucial for diagnosing and managing cardiac diseases.
  • Echocardiography is a primary imaging modality, but border delineation can be challenging, leading to interobserver variability.
  • Contrast agents like Albunex may improve image quality and measurement accuracy.

Purpose of the Study:

  • To evaluate the efficacy of intravenous Albunex in improving left ventricular volume measurements.
  • To assess the impact of Albunex on interobserver variability in echocardiographic assessments.
  • To compare contrast echocardiography with left heart angiography for volume determination.

Main Methods:

  • Patients with cardiac diseases underwent echocardiography with simultaneous intravenous Albunex injection (0.08 and 0.12 ml/kg).

Related Experiment Videos

  • Left heart angiography was performed within 6 hours post-echocardiography.
  • Left ventricular volumes and ejection fractions were measured by two independent investigators using the slice method on native echocardiograms, contrast echocardiograms, and angiograms.

    • Main Results:

    • Albunex contrast echocardiography showed significant agreement with left heart angiography for end-diastolic and end-systolic volumes.
    • Ejection fraction measurements were similar between methods.
    • Interobserver variability was significantly reduced with contrast-enhanced echocardiography compared to native echocardiography.

    Conclusions:

    • Intravenous Albunex injection improves left ventricular border delineation and volume accuracy in echocardiography.
    • Albunex effectively reduces interobserver variability, enhancing the reliability of echocardiographic measurements.
    • Contrast-enhanced echocardiography with Albunex offers a valuable tool for assessing left ventricular volumes in patients with cardiac conditions.