I just wanted to confirm that label "hippocampus" in the hippocampal subfields segmentation is simply parts of the hippocampus that do not fall into one of the other major categories? Also, where can I find the units for the hippocampal subfields? I am seeing some discrepancy between the left and right hippocampal volumes generated by freesurfer and the summed areas generated by the hippocampal subfield analysis.

Thank you,

-Sal