Blood oxygen level dependent and adenosine-perfusion imaging correlates to invasive measurement of fractional flow reser
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POSTER PRESENTATION
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Blood oxygen level dependent and adenosineperfusion imaging correlates to invasive measurement of fractional flow reserve Peter Bernhardt1*, Robert Manzke2, Thomas Walcher1, Wolfgang Rottbauer1 From 15th Annual SCMR Scientific Sessions Orlando, FL, USA. 2-5 February 2012 Background It has been shown that blood oxygen level dependent (BOLD) cardiac magnetic resonance imaging (CMR) is able to detect myocardial perfusion differences. However, validation of BOLD CMR against myocardial perfusion reserve (MPR) and fractional flow reserve (FFR) is lacking. We sought to analyze the potential diagnostic accuracy of BOLD CMR in comparison to invasively measured FFR which served as the standard reference. Methods BOLD and contrast-enhanced perfusion image analyses were performed at rest and during adenosine infusion in a 1.5T CMR scanner in three short axes (apical, midventricular and basal), respectively. Thirty-six perfusion territories in twelve patients were analyzed for relative BOLD signal intensity increase and for myocardial perfusion reserve. In all patients invasive FFR measurements were performed in the major three coronary arteries during adenosine infusion. A FFR ≤0.8 was regarded consistent with significant hypoperfusion. Results Relative BOLD signal intensity increase was significantly higher in myocardial segments supplied by coronary arteries with a FFR ≤0.8 (p
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