I'm not sure about this, but probably the doctors use the same methods for left-hippocampus and right-hippocampus. The softwares, FSL and Freesurfer, don't have a different away to operate in either hippocampus. Do you agree? That way of operating confuses me on how to interpret the differences found only for the left hippocampus.

Anyway, thank you for your help.

Another thing, in my thesis I'll have to describe what I've done in Freesurfer to obtain the hippocampus segmentation. Is there any article that describes in a general and brief way all the steps to be followed towards the final goal?

Thank you all, again.