Hi Folks,
I have a question about entorhinal cortex volume. The entorhinal cortex is listed in ?h.aparc.stats and ?h.entorhinal_exvivo.stats. In a previous post on the mailing list, it was mentioned that we should use the volume measurement from ?h.entorhinal_exvivo.stats.
We would like to make manual corrections to the entorhinal cortex segmentation (when required). For this task I can create a entorhinal volume from ?h.entorhinal_exvivo.label using mri_label2vol
This entorhinal volume will be different from the one in aparc+aseg.mgz
My question is: Has anyone published any protocols to somehow combine the two entorhinal volumes ?
Or is recommend to take the take the entorhinal volume created from ?h.entorhinal_exvivo.stats. and overlay it on norm.mgz and edit manually (when required). One limitation of this approach is that it would be hard to integrate this entorhinal volume back into aparc+aseg.mgz...
Thanks Mehul
On Wed, Dec 7, 2011 at 10:50 AM, Bruce Fischl fischl@nmr.mgh.harvard.eduwrote:
Hi Catherine
I guess I would recommend the ex vivo one since it is based explicitly on architecontics and not on guessing locations from folds.
cheers Bruce
On Wed, 7 Dec 2011, Cat Chong wrote:
Hello experts,
I am very new to freesurfer so please excuse my basic question: We want to get measurements of entorhinal cortex volumes on a group of people. I found these results listed in ?h.aparc.stats. I also noticed another ?h.entorhinal_exvivo.stats, with different results. Which should I use for a group analysis of entorhinal volume and surface area, and why are the results very different?
very best regards, catherine
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