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AJNR - American Journal of Neuroradiology

Published ahead of print on November 26, 2007
doi: 10.3174/ajnr.A0846

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Language Dysfunction After Stroke and Damage to White Matter Tracts Evaluated Using Diffusion Tensor Imaging

J.I. Breier^a, K.M. Hasan^b, W. Zhang^c, D. Men^a and A.C. Papanicolaou^a

^a Division of Clinical Neurosciences, Department of Pediatrics, University of Texas Health Science Center at Houston, Houston, Tex
^b Department of Diagnostic and Interventional Imaging, University of Texas Health Science Center at Houston, Houston, Tex
^c Minnesota Epilepsy Group and United Hospital, St Paul, Minn

View larger version (75K): [in this window] [in a new window]   Fig 1. Examples of the 3D visualization for the (A) UF, (B) SLF, and (C) AF. The meeting of the crosshairs in each section represents the point chosen visually as having the greatest intensity of representation for that region in all 3 of the planes. A 12-voxel ROI was then placed around this point in the sagittal plane for all of the structures (see examples).

View larger version (10K): [in this window] [in a new window]   Fig 2. Plot of the WAB repetition AQ score as a function of the fractional anisotropy (FA) index for the AF. A more negative FA score indicates more damage to the tract, and a more negative WAB score indicates poorer repetition.