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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
Published on: July 28, 2013
Serial proton MR spectroscopy and diffusion tensor imaging in infantile Balo's concentric sclerosis
Steffi F Dreha-Kulaczewski1, Gunther Helms, Peter Dechent
1Department of Pediatrics and Pediatric Neurology, Georg August University, Göttingen, Germany. sdreha@gwdg.de
Neuroradiology
|October 30, 2008
Summary
Proton magnetic resonance spectroscopy (MRS) and diffusion tensor imaging (DTI) reveal complementary insights into Balo
Area of Science:
- Neuroimaging
- Neurology
- Biochemistry
Background:
- Balo's concentric sclerosis is a rare, demyelinating white matter disease.
- Characterizing its evolution requires understanding both biochemical and microstructural changes.
- Proton magnetic resonance spectroscopy (MRS) and diffusion tensor imaging (DTI) offer distinct but complementary imaging parameters.
Observation:
- A 6-year longitudinal study tracked a single patient with Balo's concentric sclerosis.
- Both localized short-echo time MRS and DTI were utilized to assess a left occipital lesion.
- Clinical observation noted persistent right homonymous hemianopsia.
Findings:
- MRS revealed dynamic metabolite patterns, indicating initial active demyelination, subsequent gliosis, and partial neuroaxonal recovery.
- DTI demonstrated persistently altered fractional anisotropy and mean diffusivity, signifying severe microstructural damage.
- Fiber tracking highlighted disruption of the geniculo-calcarine tract and corpus callosum involvement.
Implications:
- MRS and DTI provide complementary information on the pathological processes in Balo's concentric sclerosis.
- Diffusion tensor imaging (DTI) appears to correlate more closely with clinical symptoms than MRS.
- These advanced neuroimaging techniques aid in understanding disease progression and clinical outcomes.
