Dear Douglas I was searching for that map, I found the curvature map, the thickness map, and so on
I don't see information about that map in the freesurfer guides Any help is welcome John Ochoa Bioingeniería Universidad de Antioquia On Mon, Apr 2, 2012 at 4:47 PM, Douglas N Greve <gr...@nmr.mgh.harvard.edu>wrote: > why don't you use the gray/white contrast map that freesurfer produces? > > > On 04/02/2012 04:24 PM, John Fredy wrote: > >> Dear Douglas and David, >> >> I am trying to know the gray-white contrast in images from epileptic >> patients. In know that I can use the freesurfer surface to obtain the >> coordinates for the interface between gray-white substance, but some help >> is welcome because the paper that I read introduce elements like use the >> data 0.5 before and 0.5 after the interface >> >> How I can convert the surface to voxel coordinates? >> >> How I can obtain the data (0.5 mm) out of the resolution of my images >> (that is 1 mm)? >> >> Any interpolation suggestion? >> >> Exists some code that I can use >> >> Thanks in advance >> >> John Ochoa >> Bioingeniería >> Universidad de Antioquia >> >> On Mon, Apr 2, 2012 at 12:12 PM, Bruce Fischl >> <fis...@nmr.mgh.harvard.edu<mailto: >> fis...@nmr.mgh.**harvard.edu <fis...@nmr.mgh.harvard.edu>>> wrote: >> >> Hi John >> >> Doug and David (ccd) can point you in the right direction once you >> are done with your surface recons >> >> cheers >> Bruce >> >> >> On Mon, 2 Apr 2012, John Fredy wrote: >> >> Dear Bruce, >> I have interest in the tools that you mentioned >> >> Best >> >> John Ochoa >> >> On Sat, Mar 31, 2012 at 5:31 PM, Bruce Fischl >> <fis...@nmr.mgh.harvard.edu >> <mailto:fis...@nmr.mgh.**harvard.edu<fis...@nmr.mgh.harvard.edu> >> >> >> >> wrote: >> Hi John >> >> we can provide that for you if you download and install >> FreeSurfer, then run recon-all on your data. We also provide >> tools for computing gray/white contrast once recon-all >> has been >> run. >> >> cheers >> Bruce >> >> On Sat, 31 Mar 2012, John Fredy wrote: >> >> Hello all, I am looking for a white-gray matter contrast >> algorithm >> >> I see the publication: Individual Differences in Verbal >> Abilities Associated >> with Regional Blurring of the Left Gray and White Matter >> Boundary >> >> >> http://www.ncbi.nlm.nih.gov/**pubmed/22031871<http://www.ncbi.nlm.nih.gov/pubmed/22031871> >> >> But,how I can obtain the coordinates of the interface >> between gray and white >> matter? >> >> Thanks in advance >> >> >> >> >> >> >> 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/**complianceline<http://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. >> >> >> >> >> > -- > Douglas N. Greve, Ph.D. > MGH-NMR Center > gr...@nmr.mgh.harvard.edu > Phone Number: 617-724-2358 > Fax: 617-726-7422 > > Bugs: > surfer.nmr.mgh.harvard.edu/**fswiki/BugReporting<http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > FileDrop: > www.nmr.mgh.harvard.edu/**facility/filedrop/index.html<http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > >
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