Dear Donatas, I believe that mri_segstats is just counting voxels using the hard segmentation, whereas the volume in lh.hippoSfVolumes-T1.long.v20.txt is obtained using a soft segmentation. If you’re interested in this, look up the WRITE_POSTERIORS option in the wiki. 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/ On 21/11/2017, 18:00, "[email protected] on behalf of Donatas Sederevicius" <[email protected] on behalf of [email protected]> wrote: Dear Freesurfer Developers, I’ve run the new longitudinal hippocampal subfields segmentation using Freesurfer’s developer version. Then I decided to extract stats for each hierarchy: HBT, FS60 and CA. I used the following command, for example: mri_segstats —seg lh.hippoAmygLabels-T1.long.v20.CA.mgz —ctab-default —sum output.txt I got what I wanted but decided to compare the results of one subject for Hippocampal_tail for each hierarchy and with the text file lh.hippoSfVolumes-T1.long.v20.txt. I got the following volume values: lh.hippoSfVolumes-T1.long.v20.txt: 583.65 HBT: 593.4 FS60: 593.4 CA: 598.3 I wonder how do you actually extract stats that are present in lh.hippoSfVolumes-T1.long.v20.txt file? What is the reason for different values? I’m very curious since I cannot get the exact same stats as in the lh.hippoSfVolumes-T1.long.v20.txt file. Thanks a lot! Donatas _______________________________________________ Freesurfer mailing list [email protected] https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail. _______________________________________________ Freesurfer mailing list [email protected] https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
