The cortical segmentation from the aseg does not often line up very well as it is only based on a voxel/volume analysis. The aseg is not informed by the surface analysis.

doug

tmazzocc@artsci.wustl.edu wrote:

Hello all-

I'm having some trouble with sessions in which the pial surface is not matching up with the cortical segmentation. Subjects were run on a 1.5T Vision scanner and we're using an average of 3 MPRAGEs. Does anyone have any suggestions on how to troubleshoot this issue? I've attached a snapshot illustrating this problem.

Thanks, Tessa

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