An ability to characterize the corticobulbar and corticospinal tracts from the motor cortex into the spinal cord with diffusion tensor imaging remains a challenge due to limiting factors such as achievable spatial resolutions, spatial coverages, and signal-to-noise ratio in the spinal cord. By extending the field-of-view through a combination of sub-millimeter isotropic axial and sagittal acquisitions, this study presents a technique to delineate the complete pyramidal tracts with data acquired at a sufficient spatial resolution to resolve intricate structural details such as the pyramidal decussation. Such a delineation can facilitate placement of spinal cord stimulation electrodes for movement disorder treatments.
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