Hi Matthias,

the recon-all -qcache flag will map the thickness for each subject to the fsaverage icosahedral coordinate system, or you can use mri_surf2surf directly to do it (or mris_spherical_average for that matter).

cheers Bruce

On Mon, 18 Jul 2011, matthias wrote:

Hi Bruce,

thanks for your fast reply! The thing is, that I want to work with the cortical-thickness values directly in matlab, but when I use the read_curv() and read_annotation() functions I get different numbers for vertices for different subjects. The goal is to represent each subject by a feature-vector of same size, containing the cortical thickness values with the intention to use various dimensionality-reduction methods, e.g. PCA. I hope you can follow me,

cheers, Matthias

Am 7/17/2011 7:03 PM, schrieb Bruce Fischl:

...

Hi Matthias

that is done as part of the recon-all process. You can do easy group analyses in qdec.

cheers Bruce

On Sun, 17 Jul 2011, matthias wrote:

...

Hello everybody,

I ran the recon_all routine on a number of images of the ADNI database. The goal is to extract first of all the cortical thickness values. In order to compare the values in a classification process, eg. Alzheimer vs Normal I want to register all images to a template subject. Does anybody know how to achieve this?

Thanks in advance,

Matthias Schlögl _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

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