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Abstract #1216

Quiescent-Interval Single-Shot Non-Contrast Enhanced MR Angiography Using Two-Point Dixon Fat-Water Decomposition

Daniel V. Litwiller1, Mahdi S. Rahimi2, Wei Sun3, Ananth J. Madhuranthakam4, Dan W. Rettmann1, Frank R. Korosec5, Jean H. Brittain6

1Global Applied Science Laboratory, GE Healthcare, Rochester, MN, United States; 2Biomedical Engineering, University of Wisconsin, Madison, WI, United States; 3MR Engineering, GE Healthcare, Waukesha, WI, United States; 4Global Applied Science Laboratory, GE Healthcare, Boston, MA, United States; 5Medical Physics and Radiology, University of Wisconsin, Madison, WI, United States; 6Global Applied Science Laboratory, GE Healthcare, Madison, WI, United States

Quiscent-Interval Single-Shot (QISS) is a recently developed non-constrast MR angiography technique that relies on a signal-saturation-based fat suppression pulse, which is sensitive to B0 and B1 inhomogeneities. In this work, we report a dual-echo bipolar QISS sequence, followed by a two-point Dixon fat-water reconstruction algorithm to synthesize fat-free, water-only images of arterial signal in the lower extremities, demonstrating robust and uniform fat suppression, improved vessel conspicuity and increased signal-to-noise ratio.

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Keywords

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