Abstract #0091

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

Ioannis Koktzoglou^1,2, 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.