Yes, the white surface is actually pretty good all around. I am actually
concerned about how the conditions that created the poor aseg segmentation
would impact any subcortical analysis. I am not entirely clear what the
impact of this segmentation could be and how (besides a voxel by voxel
correction) to fix it.
-Ronny
> Hi Ronny
>
> the white surface seems like it is in the right place most of the time,
> isn't it? That's why we use it for morphometry more than the aseg where we
> can use either
>
>
> cheers
> Bruce
>
> On Tue, 2 Apr 2013,
> preci...@nmr.mgh.harvard.edu wrote:
>
>> I am having a bit of a problem the aseg on this subject. (See
>> 2013.03.22.cor108.aseg.jpg attached) It is way overestimating the white
>> matter bilaterally. The problems are about this bad for about 20 or more
>> slices so editing manually seems like... a less than efficient
>> proposition. Any thoughts on how to fix this programmatically?
>>
>> For reference, I have a attached some other images with no segmentation
>> and using the Desikan-Killiany atlas (aparc+aseg) and the Destrieux
>> atlas
>> (aparc.a2009s+aseg) which look fine.
>>
>> Thanks,
>> -Ronny
>
>
>
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