Aberrant Course of the Corticospinal Tracts in the Brain Stem Revealed by Diffusion Tensor Imaging/Tractography
Aberrant CSTs refer to collateral pathways separating from the original CST at the midbrain, descending through the pontine ML, and re-entering the original CST at the upper medulla. We report conventional MR imaging, DTI, and FT of a child with a completely aberrant right CST. Only
FT revealed the completely aberrant course of the CST, whereas conventional MR imaging and color-coded FA-maps suggested the absence of the right CST. This case shows the ability of FT to study the abnormal course of white matter tracts.
Keywords: CST = corticospinal tract; DTI = diffusion tensor imaging; FA = fractional anisotropy; FT = fiber tractography; ML = medial lemniscus; PLIC = posterior limb of the internal capsule
Document Type: Research Article
Publication date: September 1, 2012
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