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Real-time three-dimensional dobutamine stress echocardiography for coronary artery disease diagnosis: validation with

Constadina Aggeli1, Georgios Giannopoulos, Platon Misovoulos

  • 11st Cardiology Department, University of Athens School of Medicine, Hippokration Hospital, Athens, Greece. caggeli@hol.gr

Heart (British Cardiac Society)
|November 7, 2006
PubMed

Insights

Real-time three-dimensional echocardiography (RT3DE) detects myocardial ischemia more readily than two-dimensional echocardiography (2DE), especially in apical regions. Both methods show diagnostic equivalence, but RT3DE offers significantly shorter acquisition times.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Diagnostic Techniques

Background:

  • Myocardial ischemia detection is crucial for cardiovascular disease management.
  • Two-dimensional echocardiography (2DE) is a standard tool, but limitations exist in visualizing complex wall-motion abnormalities.
  • Real-time three-dimensional echocardiography (RT3DE) offers potential advantages in cardiac imaging.

Purpose of the Study:

  • To compare the efficacy of RT3DE versus 2DE in detecting myocardial ischemia.
  • To validate echocardiographic findings against coronary angiography.
  • To assess differences in acquisition times and diagnostic accuracy between RT3DE and 2DE.

Main Methods:

  • A study involving 56 patients referred for coronary angiography.
  • Both 2DE and RT3DE were performed during a dobutamine stress protocol.
  • Angiography served as the gold standard for validation.

Main Results:

  • RT3DE demonstrated significantly shorter acquisition times (26.3 s) compared to 2DE (58.8 s).
  • RT3DE showed higher wall-motion scores in apical segments at peak stress (p=0.003).
  • Diagnostic parameters were similar: sensitivity 73% vs 78%, specificity 93% vs 89%, accuracy 86% vs 85% for 2DE vs RT3DE, respectively.

Conclusions:

  • RT3DE readily identifies apical wall-motion abnormalities, potentially improving sensitivity in territories like the left anterior descending artery.
  • RT3DE is diagnostically equivalent to 2DE for myocardial ischemia detection.
  • RT3DE offers a significant advantage with considerably shorter acquisition times.
Abstract

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