Figure 3From: Diagnosis of idiopathic normal pressure hydrocephalus is supported by MRI-based scheme: a prospective cohort studyTwo cases excluded by the central MRI review. MRIs of two illustrative cases excluded by the central MRI review board because of deviation from the pre-set MRI criteria. Note the enlarged subarachnoid spaces (arrow) proportionate to ventriculomegaly indicating brain atrophy (A), and the open high-convexity and medial subarachnoid spaces (arrow) despite disproportionately expanded ventricles (*) suggesting chronic occlusive hydrocephalus (B).Back to article page