People with multiple sclerosis (MS) lose myelin in the grey matter of their brains and the loss is closely correlated with the severity of the disease, according to a new magnetic resonance imaging (MRI) study. Researchers said the findings could have important applications in clinical trials and treatment monitoring. The study appears in the journal Radiology. Loss of myelin, the fatty protective sheath around nerve … Continue reading New neuroimaging technique links grey matter myelin loss to severity of MS.