Hi Doug and Bruce, I am somewhat surprised by your responses, given that we do what I need done with Caret all the time. I wonder if I am not explaining myself clearly or not understanding your responses (Donna, perhaps you can help?). In Caret, one does a landmark-based registration of the sphere and generates a deformation map that is applied to all the other surfaces. Are you saying that there is no similar way to get a deformation map and apply it to the other surfaces?
I am just hoping to use the FreeSurfer registration because it is a little more automated than the Caret registration. The end result is that I want to average some metric data from the volumes on the average surface. Thanks and sorry for my lack of understanding, Matt. -----Original Message----- From: Bruce Fischl [mailto:fis...@nmr.mgh.harvard.edu] Sent: Tuesday, March 02, 2010 12:38 PM To: Douglas N Greve Cc: m...@ma-tea.com; freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Application of Default Surface Based Registration to Surfaces Other than the Sphere Hi Matt, you could use mri_surf2surf to map the fsaverage surface to any subject. We always avoid doing this as we want uniform sampling in the subject's space, and were willing to make the engineering more difficult to preserve this. cheers Bruce On Tue, 2 Mar 2010, Douglas N Greve wrote: > Oh, that's not such an easy thing to do. We can only map values from one > subject to another. I know what you are describing, and it would be nice > to have. I'm not sure how possible it is as the density of the nodes > changes from subject to subject at various locations in order to reflect > the anatomy. I don't know if one surface will work for this (but maybe > if it is higher res). Bruce might have more insight. > > doug > > Matt Glasser wrote: >> Hi Doug, >> >> Thanks for your response. How does one go about getting registered white >> matter surfaces then? I would like all of the surfaces to be registered so >> that they have the same number of nodes in the same places across subjects. >> >> Thanks, >> >> Matt. >> >> -----Original Message----- >> From: Douglas N Greve [mailto:gr...@nmr.mgh.harvard.edu] >> Sent: Tuesday, March 02, 2010 12:01 PM >> To: m...@ma-tea.com >> Cc: freesurfer@nmr.mgh.harvard.edu >> Subject: Re: [Freesurfer] Application of Default Surface Based Registration >> to Surfaces Other than the Sphere >> >> I'm not sure what you mean. When the sphere.reg is registered across >> subjects, it is sufficient to register the wm surfaces. >> >> doug >> >> Matt Glasser wrote: >> >>> Hi, >>> >>> >>> >>> I am wondering if there is a way to apply the default surface based >>> registration that is done during recon-all to surfaces other than the >>> sphere so that the nodes are all lined up? I am wanting to have >>> registered white matter surfaces that I can map data from the volume >>> to the surface to and then average across subjects. >>> >>> >>> >>> Thanks, >>> >>> >>> >>> Matt. >>> >>> ------------------------------------------------------------------------ >>> >>> _______________________________________________ >>> Freesurfer mailing list >>> Freesurfer@nmr.mgh.harvard.edu >>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >>> >> >> > > 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 . 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. _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
