Dear Antti,

There’s no specific longitudinal version of the thalamic nuclei yet (hopefully one day…)

You could naively segment the subjects in a cross-sectional fashion, but I’d highly recommend that you run the main longitudinal stream first (https://surfer.nmr.mgh.harvard.edu/fswiki/LongitudinalProcessing) and then run the thalamic module on the longitudinally processed subjects.

Cheers,

/Eugenio

Juan Eugenio Iglesias

ERC Senior Research Fellow

Centre for Medical Image Computing (CMIC)

University College London

Research staff

Martinos Center for Biomedical Imaging

Massachusetts General Hospital

Research Affiliate

Computer Science and Artificial Intelligence Laboratory (CSAIL)

Massachusetts Institute of Technology

Lecturer on Radiology

Harvard Medical School

http://www.jeiglesias.com

From: <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Antti Cajanus <acajanus@gmail.com>
Reply-To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Date: Wednesday, 13 March 2019 at 08:46
To: "freesurfer@nmr.mgh.harvard.edu" <freesurfer@nmr.mgh.harvard.edu>
Subject: [Freesurfer] Thalamic nuclei longitudinal analysis

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Dear FS experts,

I'm using the thalamic nuclei segmentation on T1-images. Is it possible to perform longitudinal analysis with this data, or could I just segment the different time points separately to see volume reduction of specific nuclei?

Best,

Antti Cajanus

PhD student