Kaixo, Teresa. Yes, you would simply sum CA1-body + C1-head to get what used to be CA1 in FreeSurfer 6.0. Cheers, /Eugenio

Juan Eugenio Iglesias Senior research fellow CMIC (UCL), MGH (HMS) and CSAIL (MIT) http://www.jeiglesias.com

On 2/18/20, 05:57, "freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Teresa Esteban" <freesurfer-bounces@nmr.mgh.harvard.edu on behalf of testeban@bcbl.eu> wrote:

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Hello FreeSurfer Developers,

I am trying to use the Hippocampal subfields tool (https://surfer.nmr.mgh.harvard.edu/fswiki/HippocampalSubfieldsAndNucleiOfAmy...) to extract the stats of each subfield. On version v21 I obtain the stats for the subdivisions head, body and tail of different structures (i.e. CA1-body, CA1-head), but not of the undivided subfield (i.e. CA1). Would this undivided subfield be just the sum of the divisions? This is, would adding CA1-body and CA1-head give me the volume of CA1, or is there other way of obtaining it?

I have searched the wiki and the list and I have not been able to find an answer. I would appreciate any insight!

Freesurfer version: freesurfer-Linux-centos6_x86_64-stable-pub-v6.0.0-2beb96c

Thanks in advance,

Teresa

Teresa Esteban Predoctoral Researcher BCBL www.bcbl.eu

t.esteban@bcbl.eu Tel: +34 943 309 300 Ext #215

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