sorry, what kind of errors? I could not really tell from the images what 
the problem was


On 02/20/2018 10:22 AM, Emily Schwartz wrote:
> Hi FreeSurfer community,
>
> I am working on elderly subjects and have had this kind of surface error 
> quite often in different locations. Usually, it's over about 3-4 slices (in 
> one view) and can be fixed, but I am finding multiple in almost every subject 
> and therefore taking a lot of time to edit (and then once reprocessed new 
> ones sometimes come up in different locations). I was wondering if these are 
> normal to have, minor surface errors that do not necessarily need to be 
> fixed. I have added images of an example below. Here are some of the values I 
> get from aparc.stats for caudal middle frontal lh after manually editing:
>
> Surface area:
> Original - 2500 mm^2
> Edited -  2532 mm^2
>
> Grey volume:
> Original -  1710 mm^3
> Edited -  1727 mm^3
>
> Thickness avg
> Original -  4455 mm  std: 2.371
> Edited -  4445 mm  std: 2.365
>
> Although the thickness values only differ by 10 mm, we are a little concerned 
> because the difference is not within the standard deviation.
>
> Please let me know if all of these errors should be edited or if it may be 
> okay to keep the smaller segmentation/topological errors as they are.
>
> Thank you,
>
> Emily
>
>
>
>
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