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Abstract #4431

Diffusion tensor imaging of porcine spinal cord at 7 Tesla using readout-segmented EPI, GRAPPA and a distortion correction tool

Aurlien Massire 1,2 , Pierre-Henri Rolland 3 , Maxime Guye 1,2 , and Virginie Callot 1,2

1 CRMBM UMR 7339 CNRS, Aix-Marseille Universit, Marseille, France, 2 CEMEREM, Hpital de la Timone, Ple dimagerie mdicale, AP-HM, Marseille, France, 3 Experimental Interventional Imaging Laboratory, Aix-Marseille Universit, Marseille, France

This work provides preliminary diffusion tensor imaging (DTI) results on an ex vivo porcine spinal cord on a whole-body 7 Tesla. A readout-segmented echo-planar imaging sequence using parallel imaging was optimized to minimize magnetic susceptibility-induced image distortions. As severe distortions occurred, an additional post-processing correction tool was subsequently run on two independent data sets acquired with opposed phase-encode directions. Successful and robust distortion corrections were observed along the ten slices, leading the way to in vivo human spinal cord DTI.

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