Dear Liwen, We rebuilt the atlas and there were also minor changes in the code, so the volume won’t be exactly the same. Having said that, if you plot 6 vs dev volumes, they should be highly correlated. Cheers, /E
Juan Eugenio Iglesias Senior research fellow CMIC (UCL), MGH (HMS) and CSAIL (MIT) http://www.jeiglesias.com From: <freesurfer-boun...@nmr.mgh.harvard.edu> on behalf of Liwen Zhang <lw.zh...@yahoo.com> Reply-To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu> Date: Sunday, 22 September 2019 at 10:40 To: "freesurfer@nmr.mgh.harvard.edu" <freesurfer@nmr.mgh.harvard.edu> Subject: [Freesurfer] help! Hippocampal subfield segmentation with FS development version External Email - Use Caution Hello freesurfer experts, I previously applied hippocampal subfield segmentation using FS v.6.0. I am now trying to devide subfields into head/body where applicable using FS development version (latest version). However, I encountered the following problems/quesetions: 1) X represents certain subfield (volume) X_head + X_body (from FS dev) ~= X (from FS v.6.0) What possibly causes this volume discrepancy between FS dev and FS v.6.0? Is the head/body segmentation template in FS dev based on the same ex-vivo template as used in FS v.6.0? 2) Related to 1), subfield volume as obtained from FS v.6.0 generally larger than that from FS dev (not for all subfields though) I processed T1 images with FS v.6.0 and then applied hippocampal segmentation with both FS v.6.0 and FS dev. Any suggestions/comments would be greatly appreicated! Thank you for your time and help in advance! Best, Liwen
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