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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
Published on: July 28, 2013
Diffusion-weighted magnetic resonance imaging in Wernicke's encephalopathy
1Department of Neurology, Ilsan Paik Hospital, Inje University College of Medicine, Gyeonggi-do, South Korea. nrhks@ilsanpaik.ac.kr
Acta Neurologica Scandinavica
|March 21, 2002
Summary
Diffusion-weighted imaging (DWI) reveals vasogenic edema in Wernicke's encephalopathy (WE). Early DWI findings in WE can predict prognosis and show reversible changes with treatment.
Area of Science:
- Neurology
- Radiology
- Neuroimaging
Background:
- Wernicke's encephalopathy (WE) is a neurological emergency.
- Early diagnosis and management are crucial for patient outcomes.
Observation:
- A 47-year-old woman presented with altered consciousness, ophthalmoplegia, and ataxia.
- Diffusion-weighted imaging (DWI) demonstrated abnormal signal changes in the periaqueductal gray matter, mamillary bodies, and bilateral medial thalami.
Findings:
- Apparent diffusion coefficient (ADC) mapping indicated vasogenic edema in the bilateral medial thalami.
- These signal abnormalities resolved on follow-up imaging, correlating with clinical improvement.
Implications:
- Vasogenic edema is a key pathogenic mechanism in WE.
- DWI findings in early WE can offer prognostic insights and demonstrate treatment reversibility.
