External Email - Use Caution

Dear Corinna, The reason for this is that the volumes correspond to two different analyses. The volumes from the two sources are highly correlated, though, so it shouldn’t make almost any difference to use one or the other – but it you’re doing any analysis with the nuclei, I would use the one from the thalamic tool, for consistency. 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 and Harvard Medical School

Research Affiliate Computer Science and Artificial Intelligence Laboratory (CSAIL) Massachusetts Institute of Technology

http://www.jeiglesias.com

From: freesurfer-bounces@nmr.mgh.harvard.edu on behalf of Corinna Bauer corinnab83@gmail.com Reply-To: Freesurfer support list freesurfer@nmr.mgh.harvard.edu Date: Monday, 17 December 2018 at 12:34 To: Mailing Freesurfer List freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] thalamus_proper or whole_thalamus volume measurement?

External Email - Use Caution Dear all,

For the new thalamus nuclei segmentation there is a measurement for the whole left and right thalami. The values are different from the thalamus_proper values.

Which output should be reported as the volume for the whole thalamus?

Thank you

Corinna