Abstract #3211

Intracranial Dual-Venc 4D flow MRI at 7T: Effect of low versus high spatial resolution in combination with k-t GRAPPA acceleration

Susanne Schnell¹, Can Wu¹, Pierre-Francois Van de Moortele², Bharathidasan Jagadeesan³, Kâmil Uğurbil², Michael Markl¹, and Sebastian Schmitter²

¹Radiology, Northwestern University, Chicago, IL, United States, ²Center for Magnetic Resonance in Research, University of Minnesota, Minneapolis, MN, United States, ³Neurosurgery Department, University of Minnesota, Minneapolis, MN, United States

Dual-venc 4D flow MRI was applied in 6 healthy volunteers at a 7T MRI scanner at two different approximately isotropic spatial image resolutions, low resolution with (1.1mm)³ and high resolution with (0.8mm)³ voxel volumes. The aim of this study was to systematically investigate the potential of high-resolution k-t GRAPPA accelerated dual-venc 4D flow MRI compared to the low-resolution scan with standard GRAPPA with respect to improved image quality (vessel sharpness and depiction of small intracranial vessels) and quantification of intracranial flow parameters (net flow, peak velocity).

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