External Email - Use Caution

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

External Email - Use Caution 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