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Table 2 Analysis of difference between normal pressure hydrocephalus (NPH) versus control group (t test)

From: MRI CSF flowmetry in evaluation of different neurological diseases

  NPH group, N = 12 (mean ± SD) Control group, N = 9 (mean ± SD) P
PDV (cm/s) 4.20 ± 1.16 2.11 ± 0.37 0.0004*
PSV (cm/s) 4.96 ± 1.55 2.73 ± 0.50 0.0008*
Vmax (cm/s) 4.58 ± 1.28 2.42 ± 0.26 0.0005*
SV (ML) 83.23 ± 27.45 25.33 ± 5.30 0.009*
Aqueduct area (cm2) 0.08 ± 0.02 0.04 ± 0.01 0.008*
Maximum flow (cm3/s) 0.35 ± 0.13 0.12 ± 0.04 0.004*
  1. Data expressed as mean ± SD. SD standard deviation, P probability
  2. *Significance < 0.05