Figure 6.

Mean percent changes between corrected and raw volumes by site, structure and correction method. Traveling phantom and ComBat correction methods yielded similar results for deep gray matter structures, resulting in small magnitude changes in volumes. Conversely, changes in lateral ventricle, white matter and total brain volumes after ComBat correction were larger than after traveling phantom based correction. Note that negative values for lateral ventricle volume produced by ComBat correction were excluded prior to calculation of mean percent difference here.