Hello, Thanks Bruce, Super, it works well! I tried to make my rois in a script (to do it in many subjects), by using the commands:
select_talairach_point x1 y1 z1 select_orig_vertex_coordinates mark_vertex path_new_path_from_marked_vertices
but I did not manage to get the vertex number (index), I only can get the coordinate, and I cannot use them to mark the vertex and make the path. Is there any solution? Thanks again Leila
-----Message d'origine----- De : Bruce Fischl [mailto:fischl@nmr.mgh.harvard.edu] Envoyé : mercredi, 10. février 2010 16:18 À : Ben Hamida Cammoun Leila Faiza Cc : freesurfer@nmr.mgh.harvard.edu Objet : Re: [Freesurfer] ROI based on Talairach coordinate
Hi Leila,
you can use the tcl command
select_talairach_point <xtal> <ytal> <ztal>
in tksurfer in the tcl window (with the % prompt), then make a label from that point and dilate it a few times.
cheers, Bruce On Wed, 10 Feb 2010, Ben Hamida Cammoun Leila Faiza wrote:
Dear Freesurfer users and experts, This is my second attempt :( I am trying to construct a roi based on some talairach coordinate coming from a paper, but I completely fail to do it with matlab and neither manually with tksurfer. My first try was to use the transformation Talairach.xfm with matlab, inverse it and try to recover RAS coordinate, it gives me completely wrong values. Second try was to introduce the Tal coordinate directly in Tksurfer, which is not possible I think (correct me if I am wrong), with the version I have the is a bug in tkmedit I guess when introducing Talairach coord (the ideas was to save them and to load the vertex in tksurfer).. the values changes in the edit box.. Is there another way?? Is it possible with script? Or how to do this by matlab? Please don't ignore the request. Leila
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