Dear Yongoo These are different modules with different atlases; rather than worrying about absolute differences, I would worry if the correlation was low. 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 Yoonho Hwang ken.lmstar11@gmail.com Date: Tuesday, August 6, 2024 at 01:39 To: freesurfer@nmr.mgh.harvard.edu freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] Comparison of "segment_subregions" and "recon-all"

External Email - Use Caution Dear Bruce Fischl and Douglas Greve,

Hi all,

After completing the "recon-all" process, I have completed the "segment_subregions" process. There is a difference between the total volume (hippocampus, amygdala, thalamus, brainstem) using "asegstats2table" and the total volume (hippocampus, amygdala, thalamus, brainstem) using "segment_subregions". Is there a standard for how much difference is acceptable?

Thank you very much

Sincerely, Yoonho

-- Hwang, Yoonho

Research professor Institute of Human Genomic Study, College of Medicine, Korea University

#123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15355, Republic of Korea.

Email: ken.lmstar11@gmail.commailto:ken.lmstar11@gmail.com