Thanks, Bruce! Unfortunately, we don't have additional sequences for this data set but it's good to know that we have the best segmentation possible. :)

Best, Mihaela

On Tue, Apr 19, 2016 at 12:34 PM, Bruce Fischl fischl@nmr.mgh.harvard.edu wrote:

Hi Mihaela

adolescent girls probably have thicker cortex than older kids/adults. One thing to watch our for is dura/tentorium. Particularly when the cortex is thick it can be adjacent to cortical gray matter and difficult/impossible to avoid including in the cortical ribbon unless you have something in addition to a T1 (FLAIR, T2SPACE, T2*)

cheers Bruce

On Tue, 19 Apr 2016, Mihaela Stefan wrote:

Dear Freesurfers,

...

We noticed that some subjects in our study have the average cortical thickness values in entorhinal and temporal pole above 4 mm. They are adolescent girls so they're pretty young but we wonder if these values are accurate. Visually, their segmentations seem good.

In an older email, Bruce was recommending using _exvivo.stats instead of aparc for entorhinal measurements: https://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg26364.html

Is there a similar recommendation for the temporal pole? There doesn't seem to be any stats files apart from aparc concerning this region.

Thanks! Mihaela

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