Abstract #4530
Unwrapping-based fat-suppression method for imaging scar using bipolar dual-echo acquisition
Junmin Liu 1 , Dana C Peters 2 , and Maria Drangova 1,3
1
Imaging Research Laboratories, Robarts
Research Institute, Schulich School of Medicine &
Dentistry, University of Western Ontario, London,
Ontraio, Canada,
2
Department of Diagnostic
Radiology, Yale Medical School, New Haven, Connecticut,
United States,
3
Department
of Medical Biophysics, Schulich School of Medicine &
Dentistry, University of Western Ontario, London,
Ontario, Canada
Dixon techniques to suppress fat signal are sometimes
required for assessment of fibrosis/scar with late
gadolinium enhancement (LGE). Among Dixon LGE
techniques, the bipolar dual-echo technique is
intrinsically the fastest, and is thus optimal for
high-resolution LGE imaging. However, perfect fat-water
separation with bipolar dual-echo acquisition is still
very difficult to obtain. We extended a recently
published (mono-polar multi-echo) non-iterative
phase-unwrapping-based field mapping method (B0-NICE) to
this challenging case. The method is tested in three
human subjects with left atrial LGE and the results are
compared with those obtained using an established
region-growing algorithm.
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