Skip to main content

Advertisement

Table 5 The p-values for centre and visit effects

From: Assessment of the impact of the scanner-related factors on brain morphometry analysis with Brainvisa

Parameter 1.5 T Group 3 T Group
  Centre Visit Centre*visit Centre Visit Centre*visit
GM volume < 0.001 0.272 0.875 < 0.001 0.015 < 0.001
WM volume < 0.001 0.624 0.642 0.036 < 0.001 < 0.001
CSF volume 0.013 0.311 0.993 < 0.001 0.003 0.535
Cerebral < 0.001 0.739 0.285 < 0.001 0.599 0.109
Hemisphere
Volume
GSI 0.017 0.011 0.024 0.203 0.088 0.094
Sulcal surface
   Global 0.827 0.895 0.885 < 0.001 0.777 0.843
   Local 0.821 0.909 0.808 < 0.001 0.673 0.807
   Markovian 0.778 0.855 0.944 < 0.001 0.486 0.865
   Talairach 0.847 0.792 0.925 < 0.001 0.847 0.863
Sulcal mean
geodesic depth
   Global 0.887 0.754 0.547 0.028 0.937 0.649
   Local 0.573 0.820 0.574 0.002 0.121 0.943
   Markovian 0.742 0.422 0.603 0.001 0.182 0.381
   Talairach 0.574 0.427 0.857 0.006 0.956 0.711
  1. P-values for the main effect of centre and visit as well as their interaction for all Brainvisa metrics are given for the 1.5 T and 3 T groups. For sulcal parameters, p-values are given for all sulci recognition algorithms.