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Abstract
Magnetic resonance imaging (MRI) of the brain was performed in 10 patients with amyotrophic lateral sclerosis (ALS) and the findings were evaluated. Four patients had asymmetrical areas of increased signal intensity in the white matter. All patients showing abnormal MRI were young, had a longer clinical course, and clinically were more disabled. These MRI abnormalities were related to the pathological changes in the central white matter of patients with ALS and possible explanations for these findings in ALS are discussed.