Skip to main content
. Author manuscript; available in PMC: 2011 Feb 1.
Published in final edited form as: Neuroimage. 2009 Nov 12;49(3):2123–2133. doi: 10.1016/j.neuroimage.2009.11.006

Table 5.

Absolute within-subject variability (in %) of compartment volumes and ratios for repeated scans on the same scanner. Quantiles of the distributions are tabulated.

Parameter Quantile
 Std. Dev.
10% 50% 90% (%)
Intracranial volume 0.037 0.286 1.27 0.49
Brain volume 0.031 0.296 1.09 0.47
GM volume 0.257 0.788 2.49 0.82
WM volume 0.181 0.088 1.40 0.69
Brain ratio 0.061 0.191 0.57 0.21
GM/WM ratio 0.374 1.288 3.51 1.33
WM/GM contrast 0.064 0.403 1.24 0.76