Figure 3From: MRI assessment of the effects of acetazolamide and external lumbar drainage in idiopathic Normal Pressure Hydrocephalus Plot of symmetrized percent change in mean diffusivity (MD) within the remaining T1-hypointensities against volume of CSF drained in patients treated with external lumbar drainage. The outlier among the non-responding patients (by having high volume of drained CSF and high decrease in MD) is ELD_9. Her gait problems were attributed to Parkinson’s disease.Back to article page