Abstract #4310

Diffusion MRI and fibertracking of brachial plexus to diagnose injury

Nyoman Dana Kurniawan¹, Jin Jin², Clare Berry³, Wei Liu⁴, Aiman Al-Najjar¹, Katie L McMahon⁵, Tom Lloyd⁶, Silvia Manzanero⁷, James Powell⁸, Michael Schuetz⁷, Trevor Gervais⁹, and Paul McEniery⁹

¹Centre for Advanced Imaging, The University of Queensland, St Lucia, Australia, ²Siemens Healthcare, Brisbane, Australia, Brisbane, Australia, ³Metro North Hospital and Health Service, Brisbane, Australia, ⁴Application Department, Siemens Shenzhen Magnetic Resonance Ltd, Shenzhen, China, ⁵School of Clinical Sciences, Queensland University of Technology, Brisbane, Australia, ⁶Department of Radiology, Princess Alexandra Hospital, Brisbane, Australia, ⁷Jamieson Trauma Institute, Metro North Hospital and Health Service, Brisbane, Australia, ⁸Orthopaedics Department, Royal Brisbane and Women’s Hospital, Brisbane, Australia, ⁹Orthopedics Department, Royal Brisbane and Women’s Hospital, Brisbane, Australia

We describe the utility, optimization of a diffusion weighted imaging protocol, and the post-processing for fibertracking reconstruction of the brachial plexus nerve at 3T using a prototype Simultaneous Multi-Slice RESOLVE Diffusion-Weighted Imaging (SMS RESOLVE DWI) sequence. Best tractography profile was obtained for the acquisition acquired at 2.7 mm isotropic 3D resolution, using 7 segmentations, and 30 diffusion encoding directions at b-value of 800 s/mm², combined with tractography reconstruction using a probabilistic tensor algorithm.

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