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Probing the Brain in Autism Using fMRI and Diffusion Tensor Imaging
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Brain diffusion tensor imaging in children with tuberous sclerosis.

M S Dogan1, K Gumus2, G Koc1

  • 1Erciyes University, Faculty of Medicine, Department of Radiology, Kayseri, Turkey.

Diagnostic and Interventional Imaging
|May 5, 2015
PubMed
Summary
This summary is machine-generated.

Diffusion tensor imaging (DTI) reveals distinct diffusion characteristics in tubers and white matter lesions in children with tuberous sclerosis (TS). These findings offer insights into cytoarchitectural changes beyond standard MRI.

Keywords:
Axial diffusivityDiffusion tensor imagingPediatricsRadial diffusivityTuberous sclerosis

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Area of Science:

  • Neuroimaging
  • Biophysics
  • Pediatric Neurology

Background:

  • Tuberous sclerosis (TS) is a genetic disorder causing benign tumors in multiple organs.
  • Neuroimaging is crucial for diagnosing and monitoring TS-related brain abnormalities.
  • Diffusion Tensor Imaging (DTI) offers advanced insights into tissue microstructure.

Purpose of the Study:

  • To assess diffusion characteristics of tubers and white matter lesions in pediatric TS patients.
  • To utilize DTI metrics to understand cytoarchitectural changes in TS lesions.
  • To compare DTI findings in TS lesions with contralateral normal brain regions.

Main Methods:

  • Eighteen pediatric patients with confirmed TS underwent DTI.
  • Apparent diffusion coefficient (ADC), fractional anisotropy (FA), radial diffusivity (RD), and axial diffusivity (AD) were measured.
  • DTI metrics from 89 tubers and 37 white matter lesions were compared to normal tissue.

Main Results:

  • Tubers showed significantly higher ADC, AD, and RD, and lower FA compared to normal tissue (P<0.001).
  • White matter lesions exhibited significantly higher RD and lower FA (P<0.05).
  • RD increase was significantly greater than AD increase in both tubers and white matter lesions.

Conclusions:

  • DTI provides valuable information on cytoarchitectural changes in TS lesions.
  • DTI enhances understanding of TS brain pathology beyond conventional MRI.
  • Diffusion metrics can help characterize the microstructural environment of TS lesions.