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- Open Access
T2-prepared steady-state free-precession for detection of hemodynamic significance of coronary artery stenosis - a comparison to fractional flow reserve
© Walcher et al; licensee BioMed Central Ltd. 2013
- Published: 30 January 2013
- Myocardial Perfusion
- Cardiac Magnetic Resonance
- Fractional Flow Reserve
- Cardiac Magnetic Resonance Imaging
- Coronary Artery Stenosis
BOLD CMR has been shown to be able to detect myocardial perfusion differences. However, validation of BOLD CMR against FFR is lacking. Aim of our study was to analyze the potential diagnostic accuracy of blood oxygen level-dependent (BOLD) cardiac magnetic resonance imaging (CMR) in comparison to invasively measured fractional flow reserve (FFR) which served as gold standard for a hemodynamic significant coronary lesion.
BOLD image was performed at rest and during adenosine infusion in a 1.5T CMR scanner. Thirty-six patients were analyzed for relative BOLD signal intensity increase according to the 16-segment model. Invasive FFR measurements were performed in the major three coronary arteries during adenosine infusion in all patients. A FFR ≤0.8 was regarded to indicate a significant coronary lesion.
Relative BOLD signal intensity increase was significantly lower in myocardial segments supplied by coronary arteries with a FFR ≤0.8 compared to segments with a FFR >0.8 (1.1 ± 0.2 vs. 1.5 ± 0.2, p<0.0001). Sensitivity and specificity yielded 88.2% and 89.5%, respectively.
CMR BOLD imaging reliably detects hemodynamic significant CAD and is thus an alternative to contrast-enhanced perfusion studies.
This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.