Related Experiment Video

Updated: Oct 16, 2026

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
08:13

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography

Published on: February 16, 2016

Transmural heterogeneity of myocardial contraction and ischemia. Diagnosis and clinical implications

P Colonna1, C Cadeddu, R Montisci

  • 1Department of Cardiovascular and Neurological Sciences, University of Cagliari, Italy. pcolcard@pacs.unica.it

Italian Heart Journal : Official Journal of the Italian Federation of Cardiology
|May 12, 2000
PubMed

Insights

New ultrasound techniques can now differentiate subendocardial from transmural myocardial infarction. This improves diagnosis and treatment of cardiac patients by assessing transmural extension of myocardial necrosis.

Area of Science:

  • Cardiology
  • Medical Imaging

Background:

  • Myocardial contraction is heterogeneous, with greater force in subendocardial than subepicardial layers.
  • The subendocardium is the most vulnerable myocardial layer during acute ischemia or infarction.

Purpose of the Study:

  • To evaluate novel ultrasonographic techniques for distinguishing subendocardial from transmural myocardial ischemia or infarction.
  • To highlight the importance of assessing transmural extension in acute myocardial infarction diagnosis and treatment.

Main Methods:

  • Utilized novel ultrasonographic techniques, including tissue characterization with integrated backscatter and Doppler tissue imaging.
  • Employed nuclear magnetic resonance tagging for investigating myocardial contraction in different transmural layers.

Main Results:

  • Conventional echocardiography cannot determine the transmural extent of ischemia or infarction.
  • Novel techniques can differentiate subendocardial from transmural ischemia/infarction, providing crucial diagnostic information.
  • Assessing transmural wavefront development is critical for accurate diagnosis in acute myocardial infarction.

Conclusions:

  • New ultrasonographic methods offer improved diagnostic capabilities for myocardial ischemia and infarction.
  • These advancements provide better opportunities for appropriate diagnosis and future treatment strategies in cardiac patients.
  • Understanding transmural extension is vital for managing left ventricular dysfunction and size post-infarction.

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