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Related Experiment Videos

Appropriate 3-dimensional echocardiography data acquisition interval for left ventricular volume quantification:

J Yao1, J D Kasprzak, Y F Nosir

  • 1Department of Cardiology, Thoraxcenter, Academic Hospital Dijkzigt, Erasmus University, Rotterdam, The Netherlands.

Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography
|December 10, 1999
PubMed
Summary

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Optimizing 3D echocardiography (3DE) for left ventricular (LV) volume measurement, this study found that 12-15 degree intervals accurately measure LV volumes while significantly reducing acquisition time by over 80%.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Echocardiography

Background:

  • 3-dimensional echocardiography (3DE) provides accurate left ventricular (LV) volume measurements.
  • Clinical use of 3DE is limited by long acquisition times.
  • Investigating reduced imaging intervals is crucial for improving 3DE efficiency.

Purpose of the Study:

  • To evaluate the accuracy of LV volume measurements using 3DE data acquired at varying angular intervals.
  • To determine the optimal imaging interval for balancing accuracy and acquisition time in 3DE.

Main Methods:

  • Transthoracic 3DE datasets were acquired from 10 subjects at intervals from 2 to 20 degrees.
  • Left ventricular end-diastolic and end-systolic volumes were calculated using the summation of disks method.

Related Experiment Videos

  • Interobserver and intraobserver variability were assessed for reliability.

    • Main Results:

    • Acquisition time significantly decreased with increasing intervals, from 189 seconds at 2 degrees to 19 minutes at 20 degrees.
    • No statistically significant differences in LV volume measurements were observed across different imaging intervals.
    • High agreement was found between interobserver and intraobserver measurements, confirming reliability.

    Conclusions:

    • 3DE data acquired at 12 and 15-degree intervals maintain accuracy for LV volume measurement.
    • These intervals reduce acquisition time by over 80% compared to 2-degree intervals.
    • Larger intervals risk underestimating LV volumes without substantial time savings.