Abstract #4862

Assessment of arterial pulsatility of cerebral perforating arteries using 7T high-resolution dual-VENC phase-contrast MRI

Jianing Tang¹, Samantha J Ma², and Lirong Yan^1,3

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

Synopsis

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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