Diffusion Tensor Imaging for Peripheral Nerves in the Upper Extremities using Realtime B0 Correction & Image based Distortion Correction: A feasibility study
Maggie Mei Kei Fung1, Ek Tsoon Tan2, David Soon Yiew Sia3, and Darryl Sneag3
1MR Apps & Workflow, GE Healthcare, New York, NY, United States, 2MR, GE Global Research Center, Niskayuna, NY, United States, 3MRI Research Lab, Hospital of Special Surgery, New York, NY, United States
Diffusion tensor imaging (DTI) can potentially
be helpful in visualizing peripheral nerves and assessing nerve damages.
However, upper extremity DTIs (wrist, elbows & arm) are susceptible to
distortion and fat suppression failure, especially in arms-down position where
the area of interest is far from iso-center and can have more B0 inhomogeneity.
In this study, we aim to investigate whether a combination of B0 correction
methods can help reduce fat suppression failure, improve spatial misalignment
and thus improve nerve tracking. We observed consistent fat suppression
improvement at the wrist, but no significant improvement in spatial accuracy.
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