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Hi everyone! I have segmented the hippocampus subfields using the segmentation tool provided by the latest version of FreeSurfer. I am now looking at the pictures and I have a few questions:
* In some cases, the hp tail takes a bit of the thalamus, does the size of the tail or its borders affect the subfields. This to know if we should exclude the participant or if we can just exclude the tail from t he analysis * How the algorithm works?
I also have provided a picture as an example. Thank you for the help.
Dear Alice:
1. Can you please send another capture without the mask, or with the option “show label boundaries only” activated? It’s hard to tell, without seeing what’s behind 😊 2. You can read the paper for free here: https://www.sciencedirect.com/science/article/pii/S1053811915003420 Cheers, /Eugenio
-- Juan Eugenio Iglesias http://www.jeiglesias.com
From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Savoia, Alice (Stud. FPN) a.savoia@student.maastrichtuniversity.nl Date: Tuesday, August 27, 2024 at 7:00 AM To: Freesurfer support list freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] Question on hippocampus segmentation algorithm
External Email - Use Caution Hi everyone! I have segmented the hippocampus subfields using the segmentation tool provided by the latest version of FreeSurfer. I am now looking at the pictures and I have a few questions:
* In some cases, the hp tail takes a bit of the thalamus, does the size of the tail or its borders affect the subfields. This to know if we should exclude the participant or if we can just exclude the tail from t he analysis
* How the algorithm works? I also have provided a picture as an example. Thank you for the help.
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Thank you for your reply. This is the image you requested. The green line is the thalamus (from aseg.mgz) and the light purple area is the hp tail. Hope that now is better. Best, Alice
________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Iglesias Gonzalez, Juan E. JIGLESIASGONZALEZ@MGH.HARVARD.EDU Sent: Tuesday, August 27, 2024 3:13 PM To: Freesurfer support list freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Question on hippocampus segmentation algorithm
Dear Alice:
1. Can you please send another capture without the mask, or with the option “show label boundaries only” activated? It’s hard to tell, without seeing what’s behind ?? 2. You can read the paper for free here: https://www.sciencedirect.com/science/article/pii/S1053811915003420
Cheers,
/Eugenio
--
Juan Eugenio Iglesias
From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Savoia, Alice (Stud. FPN) a.savoia@student.maastrichtuniversity.nl Date: Tuesday, August 27, 2024 at 7:00 AM To: Freesurfer support list freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] Question on hippocampus segmentation algorithm
External Email - Use Caution
Hi everyone!
I have segmented the hippocampus subfields using the segmentation tool provided by the latest version of FreeSurfer. I am now looking at the pictures and I have a few questions:
* In some cases, the hp tail takes a bit of the thalamus, does the size of the tail or its borders affect the subfields. This to know if we should exclude the participant or if we can just exclude the tail from t he analysis
* How the algorithm works?
I also have provided a picture as an example.
Thank you for the help.
freesurfer@nmr.mgh.harvard.edu
-
Iglesias Gonzalez, Juan E. -
Savoia, Alice (Stud. FPN)