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Assessment of infarcted myocardium with real time myocardial contrast echocardiography: comparison with

P Tousek1, M Orban, S Martinoff

  • 1Deutsches Herzzentrum München, Munich, Germany.

Heart (British Cardiac Society)
|March 19, 2005
PubMed

Insights

Real-time myocardial contrast echocardiography (MCE) shows high agreement with SPECT for assessing infarct size after acute myocardial infarction reperfusion. MCE is a promising tool for clinical infarct size evaluation.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Myocardial Infarction Research

Background:

  • The relationship between microvascular damage and infarct size post-acute myocardial infarction (AMI) reperfusion is not well understood.
  • Assessing infarct size is crucial for patient management after AMI.

Purpose of the Study:

  • To compare the spatial extent of myocardial signal reduction using real-time myocardial contrast echocardiography (MCE) and single-photon emission computed tomography (SPECT).
  • To evaluate the potential of MCE for clinical infarct size assessment following successful mechanical reperfusion in AMI patients.

Main Methods:

  • 117 patients underwent MCE and SPECT 10 days after mechanical reperfusion for AMI.
  • Both imaging techniques assessed myocardial signal intensity reduction across different segments.
  • Concordance and diagnostic accuracy of MCE versus SPECT were calculated.

Main Results:

  • MCE and SPECT demonstrated 83% segmental concordance (kappa = 0.64).
  • MCE showed high sensitivity (87%) and specificity (91%) in detecting abnormal segments compared to SPECT.
  • Excellent intraobserver (94%) and interobserver (92%) agreement for MCE.

Conclusions:

  • Real-time MCE is a reliable and promising technique for assessing infarct size.
  • MCE offers a viable alternative for clinical evaluation of myocardial damage after AMI reperfusion.
Abstract

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