[Freesurfer] Fwd: How to use read_curv?

---------- Forwarded message ---------- From: fatma zribi zribi.fatma@gmail.com Date: 2013/7/11 Subject: Re: How to use read_curv? To: Bruce Fischl fischl@nmr.mgh.harvard.edu

i have used read_surf to read ?h.white data. Now i would like to use curv and sulc file of FreeSurfer and extract the variance compared two one template of the average of 80subjects. We hav'ent a method to go from curv file to plot a mesh with matlab.

2013/7/11 Bruce Fischl fischl@nmr.mgh.harvard.edu

sorry, I still don't understand what the issue is. read_surf will give you the surface geometry/topology, and read_curv will give you the scalar fields to display over them. You can use mri_surf2surf to map them into a common space (the fsaverage surface for example)

cheers Bruce On Thu, 11 Jul 2013, fatma zribi wrote:

Hi Bruce,

...

I would like to use information about curv and sulc of a population and plot the variance with plot_mesh (variance presented in one brain)

With best regards,

Fatma

2013/7/11 Bruce Fischl fischl@nmr.mgh.harvard.edu Hi Fatma

  I don't understand your question. read_curv returns a scalar
  field over the surface, not the surface itself, which is why it
  is nvertices x 1. Use read_surf to read the surface topology in

  cheers
  Bruce
  On Thu, 11 Jul 2013, fatma zribi wrote:

        Dear Bruce,
        Now i would like to use the function read_curv but I
        have a problem of
        dimension .. curv is a vector of [143704,1] and
        vertices must be a matrix of
        [3, 143704]

        Would you mind help me and send an exemple of the
        use of the function wiht
        the visualisation of the brain

        [curv, fnum] =
        read_curv([SD_atlas.parms.**SUBJECTS_DIR '/'
        SD_atlas.parms.SUBJECT '/surf/' SD_atlas.parms.hemi
        '.curv']);

        white_sbjMesh.vertices = curv';
         white_sbjMesh.faces=(fnum+1)'**;

         SD_white_remeshed{j}.vertices =
        MARS_linearInterpolate(max_**mesh.vertices,
        SD_sphere_sbjMesh,  white_sbjMesh.vertices);

        SD_avg_mesh.vertices =
        SD_avg_mesh.vertices+SD_white_**remeshed{j}.vertices;

        Thank you very much for your help

        with best regards,

        Fatma

The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/**compliancelinehttp://www.partners.org/complianceline. If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.