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
Division of Imaging Sciences & Biomedical
Engineering, King's College London, London, United
Cardiovascular Research Centre (MCRC), University of
Leeds, Leeds, United Kingdom,
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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