1. VGT voorjaar 2009 neuro Annemarieke Rutten

38. None Erosion of floor and ballooning of sella Sellar changes Markedly enlarged in Alzheimer’s Normal to mildly enlarged Choroidal-hippocampal fissures Normal Accentuated in NPH Aqueductal flow void Enlarged out of proportion with age Flattened Sulci Absent Present acutely Transependymal migration of CSF Normal or atrophied. Normal fornix-corpus call distance Thin, distended, rounded elevation. Increased distance to fornix Corpus callosum >1 cm <1 cm Mamillopontine distance More obtuse More acute Ventricular angle frontal horns (axial) Normal (exc cerebellar atrophy) Normal or enlarged 4th ventricle Concave, normal anterior recess Convex, distended anterior recess 3rd ventricle Normal (exc. Alzheimer’s) Enlarged Temporal horns Atrophy Hydrocephalus Characteristic

77. Low High with low rim Low Low High with peripheral low T2WI Susceptibility from hemosiderin and ferritin Absence of susceptibility, except in rim Intracell metHb, high protein High protein, susceptibility deoxy-Hb Central oxy-Hb, peripheral deoxy-Hb Explanation Low Chronic (months to years) High Late subacute (1-4 weeks) High Early subacute (4-7 days) Iso to low Acute (8-72h) Low Hyperacute (4-6 hours) T1WI Stage