Hi Rahul,
Thanks for the input!
I'm afraid I don't see how the atlases agree with regard to the medial SFG, since only a tiny portion of the area of interest is in SFG according to the Destriuex annotation (SFG is the uppermost parcellation in the anterior half of the hemisphere in that image). So whether or not it extends into the SFG would change with just a slight change in smooting kernel.
Thank you!
LMR
Date: Tue, 10 Mar 2009 08:12:08 -0400 Subject: Re: [Freesurfer] Destrieux or Desikan/Ron Killiany From: rahul@nmr.mgh.harvard.edu To: larilin@gmail.com CC: freesurfer@nmr.mgh.harvard.edu
Hi Lars,
From looking at the images you sent, your area of interest is clearly in the anterior portion of the cingulate gyrus as well as in the medial portion of the superior frontal gyrus (as well as a small portion in the corpus callosum). I think both atlases agree on this quite consistently.
Hope this helps.
Best,
Rahul
-- Rahul S. Desikan rahul@nmr.mgh.harvard.edu
Hi, I have an area of significance on the mesial surface of the hemisphere (please see attached tiffs). I would like to know if it is exclusively in the cingulate or in cingulate and SFG. The prolbem is that the two atlases don't agree. The upper more than half of this significant area is in SFG according to lh.aparc.annot and in cingulate gyrus and sulcus according to lh.aparc.a2005s.annot.
I know there have been some issues before with cingulate and SFG in the Destrieux atals ( http://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg05399.html) but it's unlcear to me whether these have been resolved. As you can see from the tiffs, in lh.aparc.annot the significant area is inside the corpus callosum (a small part), caudal and rostral ant. cingulate, and SFG. In lh.aparc.a2005s.annot it is inside pericallosal sulcus, g. cingulate main part, s. cingulate main part, and only a very small part of it extends into SFG. These are substantially different interpretations. Is one atlas more accurate in this region?
Thank you!
-- yours, LMR _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer