Fig. 6.

Boxplot of root mean square error (RMSE) on white matter before and after harmonization by using different methods. The red lines represent median values in RMSE. Note: dual generative adversarial networks are performed with the 2-dimensional kernel on axial slices. Prior to the calculation of medians and the boxplot drawing, RMSE values after harmonization have been averaged over different runs of the sixfold cross-validation