Dear List,
I recently posted the message you see below.
I currently compare the segmentation results of different segementation algorithms and FreeSurfer always yields the least accurate results. Because I still have difficulties to decide which of the labels in the aseg.mgz files should be considered gray matter, I have the feeling, the bad results I am getting for FreeSufer might be caused by not including all relevant gray matter segments.
So, I would very much appreaciate any help on deciding which of the labels in the aseg.mgz file belong to gray matter!
With kind regards Lucas Eggert
-------- Original-Nachricht -------- Betreff: [Freesurfer] How to determine gray matter in the aseg.mgz Datum: Tue, 03 May 2011 17:26:55 +0200 Von: Lucas Eggert leggert@Uni-Osnabrueck.DE An: freesurfer@nmr.mgh.harvard.edu freesurfer@nmr.mgh.harvard.edu
Dear Experts,
I would like to generate a gray matter mask using the aparc+aseg.mgz file.
Now, my question is whether there exists a file in addition to the FreeSurferColorLUT.txt file, which more explicitly, i. e., withouth the abbreviations, explains the labels, because I find it hard to decide whether, e. g., "Left-VentralDC", "Line1", "LeftmOg", or "Left-Interior" belong to gray matter, or not (to name only a few of those labels I cannot clearly classify).
Or is there a easier way to create a gray matter mask?
Thank you very much in advance!
Best regards, Lucas Eggert