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AJNR - American Journal of Neuroradiology

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Diffusion Tensor Tractography-Based Group Mapping of the Pyramidal Tract in Relapsing-Remitting Multiple Sclerosis Patients

F. Lin^a, C. Yu^b, T. Jiang^a, K. Li^b and P. Chan^c

^a National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, People’s Republic of China
^b Department of Radiology, Xuanwu Hospital of Capital University of Medical Sciences, Beijing, People’s Republic of China
^c Department of Neurology, Xuanwu Hospital of Capital University of Medical Sciences, Beijing, People’s Republic of China

View larger version (90K): [in this window] [in a new window]   Fig 1. The pyramidal tract (PYT) probability map. The gray-scale overlay indicates the probability of a voxel being part of the PYT.

View larger version (16K): [in this window] [in a new window]   Fig 2. Correlation and scatter plots of diffusion indices derived from normal-appearing pyramidal tract (NA PYT) versus PYT lesion volumes. Scatter plots are shown of (A) fractional anisotropy (FA), (B) directionally averaged diffusion coefficient (Dav, x 10-3 mm2/s), (C) axial diffusion coefficient (1, x 10-3 mm2/s), and (D) radial diffusion coefficient (23, x 10-3 mm2/s) versus PYT lesion volumes (mm3).