Dear Eugenio,

     Thank you for your reply. I  am sorry that I don't express it clearly.
     FIrstly, I ran egstats2label --subjects subjid --meas volume --segno 17 53 --tablefile $SUBJECTS_DIR/ASEGSTATS.txt' and acquired the volume value of left and right hippocampus. Then I used SPSS software to calculate the relationship between volume and age, the P value in the left is 0.029 and the right is 0.125. It showed that there is difference in volume of the left  hippocampus, but the right isn't. 
     Secondly, I ran 'recon-all -s subjid -all -hippocampal-subfields-T1', and get the volume of hippocampus subfields. The p value of left_whole_hippocampus is 0.229 and the right is 0.468. There is no difference in left or right hippocampus.
     My doubt is that why there is an obvious difference between the results of two ways. Can I speak in this way? If it still not clear, please tell me what you need, I will provide it for you.

Thanks,
Zheng 





At 2017-11-17 17:54:13, "Iglesias Gonzalez, Eugenio" <e.iglesias@ucl.ac.uk> wrote:

Dear Zheng,

Do you think you could provide us with some more detail on your analyses?

Cheers,

/Eugenio

 

 

-- 

Juan Eugenio Iglesias

ERC Senior Research Fellow

Translational Imaging Group

University College London

http://www.jeiglesias.com

http://cmictig.cs.ucl.ac.uk/

 

 

From: <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Ö£·ïÁ« <13181786167@163.com>
Reply-To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Date: Friday, 17 November 2017 at 09:40
To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Subject: [Freesurfer] hippocampus subfields

 

Hi professor,

    I am using Freesurfer for DTI data. When I run 'mri_segstats',  I got the result that there was anobvious difference in left hippocampus, but no difference in right hippocampus. Then, I run segmentation of  hippocampus subfields. The result showed there is no difference in total left or right hippocampus, and only in two right hippocampus subfields has significant difference. Why is there inconsistent result in two means? 
    Thank you very much.

Sincerely,
Zheng