Fig. 3
From: Big Field of View MRI T1w and FLAIR Template - NMRI225

Results of the Iterations on the T1w template. Note how the extracranial areas gain in anatomical precision with the non-linear warping converging towards the higher iterations. After seven iterations the stop conditions of a root-mean-square error of less than 5% was reached. Images are in radiological convention (left in the image is right in the subject/template).