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.