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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