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Abstract #3516

Efficiency and Reliability of Vessel Encoding PCASL

Rui Wang1, Zhentao Zuo1, Rong Xue1, Yan Zhuo1, Danny JJ Wang2

1State Key Lab of Brain and Congitive Science, Beijing MRI Center for Brain Research, Institute of Biophysics,Chinese Academy of Sciences, Beijing, China; 2Neurology,UCLA, Los Angeles, CA, United States

The goal of this study was to estimate the labeling efficiency and longitudinal reliability of vessel encoding pseudo-continuous ASL (VE-PCASL) for the 3 main feeding arteries at 3T, utilizing phase-contrast (PC) MRI as the reference standard. We calculated the global labeling efficiency and those of the right internal carotid (R), left internal carotid (L), and basilar artery (B) of VE-PCASL. Our results demonstrated that the labeling efficiency of VE-PCASL is reproducible and is not sensitive to labeling locations. However, the labeling efficiency of B was lower than that of the carotid arteries.