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Related Experiment Videos

Mapping myocardial viability using interleaved T1-T2* weighted imaging.

Gang Li1, Guangping Dai, Bo Xiang

  • 1Institute for Biodiagnostics, National Research Council, Winnipeg, Man., Canada.

The International Journal of Cardiovascular Imaging
|April 8, 2004
PubMed
Summary
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Interleaved T1-T2* imaging effectively assesses myocardial viability. This method accurately delineates infarcted myocardium by measuring T2* intensity recovery after contrast agent injection.

Area of Science:

  • Cardiovascular Imaging
  • Magnetic Resonance Imaging
  • Myocardial Viability Assessment

Background:

  • Assessing myocardial viability is crucial for diagnosing and managing heart conditions.
  • Traditional methods for myocardial viability assessment have limitations.
  • Novel imaging techniques are needed to improve diagnostic accuracy.

Purpose of the Study:

  • To evaluate the efficacy of interleaved T1-T2* weighted imaging for assessing myocardial viability.
  • To determine if this novel imaging sequence can differentiate between infarcted and normal myocardium.

Main Methods:

  • Pig hearts underwent coronary artery occlusion and reperfusion.
  • Hearts were perfused ex vivo using a Langendorff apparatus.
  • T1 relaxation times were measured, followed by contrast agent injection and interleaved T1-T2* imaging.

Related Experiment Videos

  • Percentage recovery of T2* intensity (PRT2*) was calculated.

    • Main Results:

    • PRT2* was significantly higher in infarcted myocardium compared to normal myocardium.
    • Regions of high T2* recovery on PRT2* maps correlated well with infarcted areas identified by triphenyl tetrazolium chloride staining.

    Conclusions:

    • Interleaved T1-T2* imaging is an effective method for assessing myocardial viability.
    • This technique can accurately delineate infarcted myocardium, aiding in diagnosis and treatment planning.