Abstract #1750

Evaluation of flow suppression methods for multi-echo gradient echo carotid wall imaging

Junmin Liu¹, Omer Oran², and Maria Drangova^1,3

¹Robarts Research Institute, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada, ²Siemens Healthcare Canada, Oakville, ON, Canada, ³Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada

Synopsis

By adding long TEs to the Dixon acquisition, the chemical-shift-based T2*-weighted multi-echo GRE (CS-T2*-mGRE) techniques have gained attention, because they are able to generate co-registered multi-contrast images and quantitative maps. However, flow-suppressed CS-T2*-mGRE sequences have not been evaluated for carotid wall imaging. We compared the performance of simultaneous quantification of fat fraction (FF) and R2* from CS-T2*-mGRE sequences with and without saturation slabs, and with the incorporation of DANTE pulses for black blood imaging (DANTE-CS-T2*-mGRE); we used the FF for fat-suppression to better visualize the vessel wall from DANTE-CS-T2*-mGRE as well as the carotid artery lumen from CS-T2*-mGRE.

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