Researchers at the Krembil Neu-roscience Centre say they have potentially discovered a major cause of common dementia. In this type of dementia, there is damage to the white matter (nerve fibres) of the brain apparent on computerized tomography (CT) and magnetic resonance imaging (MRI) scans of older individuals. Approximately 50 per cent of older individuals have evident white matter damage on their medical imaging scans. For most patients, these changes are harmless but when this damage is severe, it can cause impairment.
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