14 Mar
2013
14 Mar
'13
12:57 p.m.
Hello experts, I am doing volumetric studies where I am comparing the subcortical structures volumes among different experimental groups. I usually do two mprages on one subject in a single scan at two time-points. I run recon all on both mprages for a single subjects. To my surprise the volumes of same structure of a single subject calculated by freesurfer using two mprages are different.
I did longitudinal run using the two mprages from same subject, however then also the volumes show differences.
May you please advise me what to do. Thanks, Rashmi