Abstract #3215

Effect of field strength and spatial resolution on quantifying intracranial hemodynamics with PEAK-GRAPPA accelerated Dual-Venc 4D flow MRI

Susanne Schnell¹, Maria Aristova¹, Can Wu^1,2, Pierre-Francois Van de Moortele³, Bharathi Dasan Jagadeesan⁴, Kamil Ugurbil³, Michael Markl^1,5, and Sebastian Schmitter^3,6

¹Radiology, Northwestern University, Chicago, IL, United States, ²Philips Healthcare, Gainesville, FL, United States, ³Center for Magnetic Resonance in Medicine, University of Minnesota, Minneapolis, MN, United States, ⁴University of Minnesota, Minneapolis, MN, United States, ⁵Biomedical Engineering, Northwestern University, Evanston, IL, United States, ⁶Physikalisch-Technische Bundesanstalt, Braunschweig and Berlin, Germany

Dual-venc 4D flow MRI was applied in 5 healthy volunteers at two different field strengths of 3T and 7T and at two different isotropic spatial image resolutions, approximately (1.2mm)³ and (0.8mm)³. The aim of this study was to systematically investigate the effect of field strength as well as the impact of resolution for intracranial 4D flow MRI with respect to image quality (vessel sharpness and depiction of small intracranial vessels) and quantification of intracranial flow parameters (net flow, peak velocity).

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