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Abstract #2674

QISS UTE: Quiescent-Inflow Single-Shot MRA of the Peripheral Arteries using an Ultra-Short Echo Time Readout

Robert R. Edelman 1,2 , Shivraman Giri 3 , Ian Murphy 2 , Kieran O'Brien 4 , Matthew D. Robson 5 , and Ioannis Koktzoglou 1,6

1 Radiology, NorthShore University HealthSystem, Evanston, Illinois, United States, 2 Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States, 3 Siemens Healthcare, Chicago, Illinois, United States, 4 Siemens Healthcare, Switzerland, 5 Department of Cardiovascular Medicine, Oxford University, Oxford, United Kingdom, 6 Radiology, Pritzker School of Medicine, University of Chicago, Chicago, Illinois, United States

In patients with peripheral arterial disease and impaired renal function, quiescent-interval single-shot (QISS) MRA using a balanced steady-state free precession (bSSFP) readout has proven to be an accurate and useful alternative to contrast-enhanced MRA and CT angiography. However, the use of a bSSFP readout makes the technique sensitive to off-resonance effects, as may occur in the vicinity of orthopedic hardware such as fixation screws or metallic prostheses. Moreover, the bSSFP readout is potentially sensitive to artifacts from flow turbulence caused by a severe stenosis. In order to overcome these limitations, we tested the feasibility of incorporating an ultra-short echo (UTE) readout into QISS MRA.

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