Thank you. But I do not have the surface ready in caret topo/coord form to start with, how to start by using mri hi-res images.
thanks again! Soha On Thu, Oct 8, 2009 at 2:28 PM, Donna Dierker <[email protected]>wrote: > On 10/08/2009 11:01 AM, soha saleh wrote: > > Hi Donna and caret users: > > > > I need to map the functional MRI data onto reconstructed surface of > > our subject's MRI data. Can we do this using caret? If yes please give > > me some help with that. > Yes: > > If the surface is already in Caret .coord/.topo form, then you can go > straight here: > > > http://brainvis.wustl.edu/wiki/index.php/Caret:Operations/MapVolumeToSurface > > If the surface is in Freesurfer format, you can import it using the GUI > using File: Open Data File: FreeSurfer Binary Surface File; however, > you'll probably find it easier to use one of the scripts out there for > importing Freesurfer surfaces. Here is one such script: > > > http://brainmap.wustl.edu/pub/donna/FREESURFER/SCRIPTS/2009_09/freesurfer2caret.Ver2a.preborder.mni2wustl.sh > login pub > password download > > But certain steps are study-specific (e.g., the appropriate affine > transforms to apply to the surface, which depends on input). > > > > I guess this is doable using FreeSurfer, but I never used FreeSurfer > > and I am a new Caret user, if it is doable in both, which is better > > and easier?! > I'm certain Freesurfer can map functional data onto Freesurfer surfaces, > but I don't know how to do it. Nor do I know which is better. > > For mapping in Caret, we typically use the midthickness surface as the > mapping substrate. The most popular mapping algorithms are enclosing > voxel and interpolated voxel. The web page above explains the algorithms. > > > > Thank you! > > > > Regards, > > Soha > _______________________________________________ > caret-users mailing list > [email protected] > http://brainvis.wustl.edu/mailman/listinfo/caret-users >
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