Journal of the American College of Cardiology
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J. Am. Coll. Cardiol. · Jul 2006
Determinants of coronary steal in chronic total coronary occlusions donor artery, collateral, and microvascular resistance.
We aimed to assess the mechanisms of coronary steal by direct hemodynamic measurements of the collateral circulation in chronic total coronary occlusions (CTO). ⋯ We could demonstrate that coronary steal in man is mainly due to a hemodynamically significant donor artery lesion, but can also occur due to an impaired vasodilatory reserve of the microcirculation in the absence of a donor artery lesion. Coronary steal may have an adverse influence on the preservation of myocardial function by collaterals.
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J. Am. Coll. Cardiol. · Jul 2006
Multislice computed tomography and magnetic resonance imaging for the assessment of reperfused acute myocardial infarction.
We evaluated the accuracy of in vivo delayed-enhancement multislice computed tomography (DE-MSCT) and delayed-enhancement magnetic resonance imaging (DE-MRI) for the assessment of myocardial infarct size using postmortem triphenyltetrazolium chloride (TTC) pathology as standard of reference. ⋯ We demonstrated that DE-MSCT can assess acute reperfused myocardial infarction in good agreement with in vivo DE-MRI and TTC pathology.