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Diffusion tensor imaging in children and adolescents with tuberous sclerosis
Demet Karadag1, Hans-J Mentzel, Daniel Güllmar
1Department of Paediatric Radiology, Institute of Diagnostic and Interventional Radiology, Friedrich Schiller University, Bachstrasse 18, 07740 Jena, Germany.
Pediatric Radiology
|September 20, 2005
Summary
Diffusion tensor imaging (DTI) reveals altered white matter diffusion in children with tuberous sclerosis (TS). DTI highlights microstructural changes in cortical tubers and white matter lesions, aiding in understanding TS pathology.
Area of Science:
- Neuroimaging
- Radiology
- Pediatric Neurology
Background:
- Tuberous sclerosis (TS) is a genetic disorder causing benign tumors in various organs.
- Diffusion tensor imaging (DTI) is a sensitive MRI technique for detecting microstructural tissue changes.
Purpose of the Study:
- To generate apparent diffusion coefficient (ADC) and fractional anisotropy (FA) maps in pediatric TS patients.
- To investigate diffusion properties in TS-related brain lesions and compare them to controls.
Main Methods:
- MRI scans were performed on seven children and adolescents with TS using a 1.5-T scanner.
- DTI data were acquired using echo-planar imaging with diffusion gradients in six directions (b=1,000 s/mm²).
Main Results:
- ADC values were elevated in cortical tubers compared to controls.
- White matter lesions and perilesional areas showed higher ADC and lower FA values than controls and normal-appearing white matter in TS patients.
- No significant differences in ADC or FA were found in normal-appearing white matter of TS patients versus controls.
Conclusions:
- DTI is valuable for characterizing microstructural abnormalities in TS.
- The study demonstrates DTI's utility in assessing cortical tubers, white matter lesions, and perilesional tissue in TS.