Abstract #3662
Self-Navigated 3D Whole Heart Coronary MRI with VARPRO Fat-Water Separation
Davide Piccini 1,2 , Peter Kellman 3 , Diego Hernando 4 , Simone Coppo 2 , Gabriele Bonanno 2 , and Matthias Stuber 2
1
Advanced Clinical Imaging Technology,
Siemens Healthcare, Lausanne, Switzerland,
2
Department
of Radiology, University Hospital (CHUV) and University
of Lausanne (UNIL) / Center for Biomedical Imaging
(CIBM), Lausanne, Switzerland,
3
Laboratory
of Cardiac Energetics, National Institutes of
Health/NHLBI, Bethesda, Maryland, United States,
4
Department
of Radiology, University of Wisconsin-Madison, Madison,
Wisconsin, United States
Respiratory self-navigation (SN), using a modified 3D
radial trajectory has successfully been tested for
whole-heart coronary MRA achieving 100% scan efficiency.
However, radial imaging in combination with standard
CHEmical Shift Selective (CHESS) pulses exhibits a
compromised fat-suppression performance due to fat
magnetization recovery during the acquisition. A
multi-echo version of SN 3D radial MRA was combined with
the VARiable PROjection method (SN-VARPRO) for
Dixon-like fat-water separation with flexible echo-times
and compared to the SN-CHESS acquisition in volunteers.
Increased fat suppression was achieved with SN-VARPRO. A
trend for increased vessel sharpness and similar
visualized length was obtained with respect to SN-CHESS.
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