| Condition || Normal pressure hydrocephalus || Brain atrophy
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| Modality in this example || [[CT ]] || [[MRI]]
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| CSF spaces over the convexity near the vertex (red ellipse [[File:Red ellipse.png|20px]]) || Narrowed convexity ("tight convexity") as well as medial cisterns || Widened vertex (red arrow) and medial cisterns (green arrow)