Assessment of arterial pulsatility of cerebral perforating arteries using 7T high-resolution dual-VENC phase-contrast MRI
Jianing Tang1, Samantha J Ma2, and Lirong Yan1,3
1USC Mark and Mary Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States, 2Siemens Medical Solutions USA, Inc., Los Angeles, CA, United States, 3Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
A dual VENC strategy was applied in 2D high-resolution phase-contrast MRI to improve the sensitivity of arterial pulsatility measurement in cerebral perforating arteries at 7T. Compared to a single VENC of 40cm/s, significant increase in the number of detected perforators was observed using a dual-VENC approach with VENC of 20cm/s and 40cm/s. Reproducibility of arterial pulsatility measurement in perforating arteries was evaluated in test-retest experiments. Good agreement was achieved between test-retest pulsatility measurements.
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