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Abstract #0935

Coronary MRA Angiography at 3T: Fat Suppression Versus Water-Fat Separation

Maryam Nezafat 1 , Markus Henningsson 1 , David P Ripley 2 , Nathalie Dedieu 1 , Gerald Greil 1 , John P Greenwood 2 , Peter Brnert 3 , Sven Plein 2 , and Ren M Botnar 1

1 Division of Imaging Sciences & Biomedical Engineering, King's College London, London, United Kingdom, 2 Multidisciplinary Cardiovascular Research Centre (MCRC), University of Leeds, Leeds, United Kingdom, 3 Philips Research, Hamburg, Germany

Suppression of lipid signal is a basic requirement in CMRA because coronary arteries are embedded in epicardial fat and signal from fat can decrease coronary vessel conspicuity. Most CMRA scans are currently performed with fat suppression techniques such as SPIR. However, methods based on spectrally-selective fat saturation are sensitive to B0 and B1 field inhomogeneities. Recent improvements in chemical shift based water fat separation methods such as Dixon provide an alternative to conventional spectrally-selective fat suppression techniques. The purpose of this study was to compare the SPIR technique with Dixon water fat separation at 3T for CMRA.

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