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Diffusion tensor imaging in children with tuberous sclerosis complex: tract-based spatial statistics assessment of brain microstructural changes

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Abstract

Background

There is evidence of microstructural changes in normal-appearing white matter of patients with tuberous sclerosis complex.

Objective

To evaluate major white matter tracts in children with tuberous sclerosis complex using tract-based spatial statistics diffusion tensor imaging (DTI) analysis.

Materials and methods

Eight children (mean age ± standard deviation: 8.5 ± 5.5 years) with an established diagnosis of tuberous sclerosis complex and 8 age-matched controls were studied. The imaging protocol consisted of T1-weighted high-resolution 3-D spoiled gradient-echo sequence and a spin-echo, echo-planar diffusion-weighted sequence. Differences in the diffusion indices were evaluated using tract-based spatial statistics.

Results

Tract-based spatial statistics showed increased axial diffusivity in the children with tuberous sclerosis complex in the superior and anterior corona radiata, the superior longitudinal fascicle, the inferior fronto-occipital fascicle, the uncinate fascicle and the anterior thalamic radiation. No significant differences were observed in fractional anisotropy, mean diffusivity and radial diffusivity between patients and control subjects. No difference was found in the diffusion indices between the baseline and follow-up examination in the patient group.

Conclusion

Patients with tuberous sclerosis complex have increased axial diffusivity in major white matter tracts, probably related to reduced axonal integrity.

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Authors and Affiliations

  1. Department of Radiology, Medical School, University of Ioannina, 1186, 45110, Ioannina, Greece

    Anastasia K. Zikou, Vasileios G. Xydis, Loukia C. Tzarouchi & Maria I. Argyropoulou

  2. Department of Medical Physics, Medical School, University of Ioannina, 1186, 45110, Ioannina, Greece

    Loukas G. Astrakas

  3. Department of Child Health, Medical School, University of Ioannina, 1186, 45110, Ioannina, Greece

    Iliada Nakou & Meropi Tzoufi

Authors
  1. Anastasia K. Zikou
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  2. Vasileios G. Xydis
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  3. Loukas G. Astrakas
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  5. Loukia C. Tzarouchi
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  6. Meropi Tzoufi
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  7. Maria I. Argyropoulou
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Correspondence to Maria I. Argyropoulou.

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Zikou, A.K., Xydis, V.G., Astrakas, L.G. et al. Diffusion tensor imaging in children with tuberous sclerosis complex: tract-based spatial statistics assessment of brain microstructural changes. Pediatr Radiol 46, 1158–1164 (2016). https://doi.org/10.1007/s00247-016-3582-2

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  • DOI: https://doi.org/10.1007/s00247-016-3582-2

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