Hi again, Zheng, How many subjects do you have? Did you correct by intracranial volume? What is the age range?
-- 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-boun...@nmr.mgh.harvard.edu> on behalf of 郑凤莲 <13181786...@163.com> Reply-To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu> Date: Friday, 17 November 2017 at 12:41 To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu> Subject: Re: [Freesurfer] hippocampus subfields 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.igles...@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-boun...@nmr.mgh.harvard.edu<mailto:freesurfer-boun...@nmr.mgh.harvard.edu>> on behalf of 郑凤莲 <13181786...@163.com<mailto:13181786...@163.com>> Reply-To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu<mailto:freesurfer@nmr.mgh.harvard.edu>> Date: Friday, 17 November 2017 at 09:40 To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu<mailto: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
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