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Updated: Jul 6, 2026

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
Published on: February 16, 2016
Myocardial ischemia: detection and quantitation
Insights
Detecting myocardial ischemia, a late sign of coronary artery disease, is crucial. Early detection aids in preventing heart attack complications and evaluating treatment effectiveness.
Area of Science:
- Cardiology
- Medical Diagnostics
Background:
- Myocardial ischemia at rest is a late manifestation of coronary artery disease.
- Transient ischemia can be induced by increased myocardial oxygen demand.
- Physiologic abnormalities from ischemia are detectable through various assessments.
Purpose of the Study:
- To highlight the clinical importance of detecting myocardial ischemia.
- To discuss the challenges and significance of diagnosing ischemia in coronary artery disease.
- To review methods for assessing ischemia and their role in evaluating therapies.
Main Methods:
- Assessment of myocardial perfusion.
- Evaluation of regional mechanical function.
- Electrophysiology and metabolism studies.
Main Results:
- Current methods for quantifying myocardial ischemia are imprecise.
- Diagnostic tests vary in sensitivity, specificity, cost, and ease of use.
- Despite limitations, methods have been used to evaluate therapies for reducing myocardial infarction size.
Conclusions:
- Detecting myocardial ischemia is a critical clinical problem due to associated morbidity and mortality.
- Coronary artery bypass surgery can reverse ischemia before permanent damage.
- Accurate detection of ischemia is vital for guiding treatment and assessing therapeutic efficacy.
Abstract:
Myocardial ischemia at rest occurs only late in the course of coronary artery disease, but transient ischemia can often be induced by increasing myocardial oxygen demand with exercise or atrial pacing. Myocardial ischemia causes a series of physiologic abnormalities that can be detected by assessment of myocardial perfusion, regional mechanical function, electrophysiology, and metabolism. Methods of assessment vary widely in sensitivity, specificity, cost, and ease of application. Although the appropriate choice of diagnostic test may be difficult, the morbidity and mortality that result from myocardial ischemia and infarction and the demonstrated potential of coronary artery bypass surgery to reverse myocardial ischemia before the development of permanent sequellae make the detection of ischemia an important clinical problem. Present methods for quantitating myocardial ischemia are imprecise and difficult to apply but have been used successfully to evaluate the efficacy of therapies designed to reduce the size of myocardial infarction.
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