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Abstract #0938

Ungated quiescent-inflow single-shot (UnQISS) for Nonenhanced MRA of Peripheral Arterial Disease

Robert R. Edelman 1,2 , Oisin Flanagan 2 , Shivraman Giri 3 , Peter Speier 4 , and Ioannis Koktzoglou 1,5

1 Radiology, NorthShore University HealthSystem, Evanston, IL, United States, 2 Radiology, Northwestern University, Chicago, IL, United States, 3 Siemens Healthcare, Chicago, IL, United States, 4 Siemens Healthcare, Erlangen, Germany, 5 Radiology, University of Chicago Pritzker School of Medicine, Chicago, IL, United States

Nonenhanced MRA is useful for patients with peripheral arterial disease, and particularly for those with impaired renal function. Existing techniques for nonenhanced MRA, such as subtractive fast spin echo and QISS MRA, require cardiac gating. Moreover, specialized peripheral vascular phased array coils are required to provide sufficient signal-to-noise ratios (SNR) over the extensive peripheral arterial territory. UnQISS MRA allows peripheral nonenhanced MRA to be acquired without the need for cardiac gating. Moreover, the use of a lengthy echo train improves SNR and avoids the needs for parallel imaging, so that imaging can be done just using the body coil.

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