Diffusion features of white matter in tuberous sclerosis with tractography

Michelle L Krishnan, Olivier Commowick, Shafali S Jeste, Neil Weisenfeld, Arne Hans, Matthew C Gregas, Mustafa Sahin, Simon K Warfield

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

Normal-appearing white matter has been shown via diffusion tensor imaging to be affected in tuberous sclerosis complex. Under the hypothesis that some systems might be differentially affected, including the visual pathways and systems of social cognition, diffusion properties of various regions of white matter were compared. For 10 patients and 6 age-matched control subjects, 3 T magnetic resonance imaging was assessed using diffusion tensor imaging obtained in 35 directions. Three-dimensional volumes corresponding to the geniculocalcarine tracts were extracted via tractography, and two-dimensional regions of interest were used to sample other regions. Regression analysis indicated lower fractional anisotropy in the splenium of corpus callosum and geniculocalcarine tracts in tuberous sclerosis complex group, as well as lower axial diffusivity in the internal capsule, superior temporal gyrus, and geniculocalcarine tracts. Mean and radial diffusivity of the splenium of corpus callosum were higher in the tuberous sclerosis complex group. The differences in diffusion properties of white matter between tuberous sclerosis complex patients and control subjects suggest disorganized and structurally compromised axons with poor myelination. The visual and social cognition systems appear to be differentially involved, which might in part explain the behavioral and cognitive characteristics of the tuberous sclerosis complex population.
Original languageEnglish
Article numberN/A
Pages (from-to)101-106
Number of pages6
JournalPediatric Neurology
Volume42
Issue number2
DOIs
Publication statusPublished - Feb 2010

Keywords

  • Adolescent
  • Adult
  • Child
  • Child, Preschool
  • Diffusion Tensor Imaging
  • Humans
  • Infant
  • Nerve Fibers, Myelinated
  • Tuberous Sclerosis
  • Young Adult

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