– “OK” if no tag was reported,
– “Maybe” if one or several regions were tagged, yet no tag spheres overlapped (approximately less than 8 mm apart),
– “Failed” if two tag spheres overlapped, meaning that an extensive brain area (¿8 mm) was
misregistered.
Alternatively, a “Failed” rating was also issued if the entire image was of poor quality
due to motion or a ringing artifact. In that case user would would tag two or more overlapping points. Or use the buttons Fail