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Table 1 Conventional MRI findings in each group

From: MRI CSF flowmetry in evaluation of different neurological diseases

Group MRI finding
NPH group (N = 12) Evan index > 0.3 (N = 12)
Aqueduct flow void sign (N = 5)
Hydrocephalus group (N = 11) ventricular dilatation
IIH group (N = 7) Empty sella (N = 4)
Widened perioptic CSF space (N = 5)
Posterior globe flattening (N = 2)
BA group (N = 6) Widened subarachnoid CSF space and cortical sulci (N = 5)
White matter hyperintensities (N = 2)
CM-I group (N = 3) Herniation of the cerebellar tonsil beyond the foramen magnum
Syringomyelia
Aqueduct flow void sign
  1. NPH normal pressure hydrocephalus, IIH idiopathic intracranial hypertension, BA brain atrophy, CM-I Chiari malformation type I