1. PET: Perform "MainMenu>3D Projection>Mirror voxels"
2. Perform EdgeWave BrainMask detection on Axial using the "MainMenu>Segment>Axial BrainMask"
3. After selecting the last timepoint of PET as the base for the registration, using the MR+BrainMask as the target, performed registration using the CrossCorrelation measure.
