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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 Wu1,2, Pierre-Francois Van de Moortele3, Bharathi Dasan Jagadeesan4, Kamil Ugurbil3, Michael Markl1,5, and Sebastian Schmitter3,6

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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