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Abstract : After reperfusion, viable myocardium can contract. Identifying viable myocardium helps determine which patients will benefit from revascularization and have increased LVEF and survival. This study evaluated the relevance of delayed contrast enhanced cardiac MRI in assessing myocardial viability before revascularization and the efficacy of cardiac MRI in detecting and categorising regional wall motion anomalies. After reperfusion, viable myocardium can contract. Identifying viable myocardium helps determine which patients will benefit from revascularization and have increased LVEF and survival. This study evaluated the relevance of delayed contrast enhanced cardiac MRI in assessing myocardial viability before revascularization and the efficacy of cardiac MRI in detecting and categorising regional wall motion anomalies. 39 cases and those without enhancement were 11 cases. The mean infarct size by delayed enhanced cardiac MRI was 22 ± 15.8% of the left ventricle. There was a moderate positive correlation between cardiac MRI and two dimensions’ echocardiography. Left ventricular ejection fraction correlates inversely with the size of infarcted myocardium. There was a strong positive correlation between infarct size and wall motion abnormalities. A strong positive correlation was found between the percent of LAD stenosis and percent of infarction size in LV as well as LCX, while a moderate positive correlation was found regarding the RCA. Cine MRI and tissue characterization allow exact observation of myocardial scar, hibernating myocardium, and normal myocardium. Echocardiogram infarction size percent and LV ejection fraction are related. Hypokinetic, akinesic, and dyskinetic cardiac regions experienced delayed improvements.

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