oh, I see. Usually it's pretty good there. Sometimes if there is enough motion, or lower res scans it can be hard to distinguish left from right gray matter, but otherwise it is a pretty reliable set of regions I believe

cheers Bruce

On Wed, 13 Aug 2014, amirhossein manzouri wrote:

Dear Bruce,  I meant  cingulate cortex, the cuneus and precuneus !

Best regards, Amirhossein Manzouri

On Mon, Aug 11, 2014 at 12:53 PM, Bruce Fischl fischl@nmr.mgh.harvard.edu wrote: Hi Amirhossein

  which structures do you mean? Like the ventricles? We usually mask those regions out using the
  ?h.cortex.label. The surfaces should be "frozen" in those regions in any case, meaning that
  the white and pial are in the same location (and the thickness is 0)

  cheers
  Bruce



  On Mon, 11 Aug 2014, amirhossein manzouri wrote:

        Dear All, 
        I wonder if you have experienced or there is any report on cortical segmentation
        reliability in the
        mid-line structures of the brain, so one should take them into consideration in
        running group differences
        with Qdec?

        Best regards,
        Amirhossein Manzouri 

         

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