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Abstract #0091

Non-Enhanced Extracranial Carotid MR Angiography using Pseudocontinuous ASL: Comparison with Pulsed ASL & Clinical Feasibility at 1.5T

Ioannis Koktzoglou1,2, NavYash Gupta3, Robert R. Edelman1

1Radiology, NorthShore University HealthSystem, Evanston, IL, USA; 2Radiology, the University of Chicago, Chicago, IL, USA; 3Vascular Surgery, NorthShore University HealthSystem, Evanston, IL, USA

Compared with alternate nonenhanced approaches of time-of-flight magnetic resonance angiography (MRA), new nonenhanced techniques such as pulsed arterial spin labeling (PASL) may offer potential benefits. A more recent labeling approach, pseudocontinuous arterial spin labeling (PCASL), has been reported to improve the signal-to-noise ratio (SNR) of cerebral perfusion imaging compared with PASL. The purpose of this study was to investigate whether PCASL can improve the SNR of nonenhanced carotid MRA compared with pulsed methods.