Hi Bastian, use the longitudinal base for it. Also, once your ROI is in that space you can simply apply it in each long as they are in the same space as the base. The registration of base >> TP1.long etc. probably only changes results very little.
Best, Martin On 07/18/2014 10:45 AM, Bastian Cheng wrote: > Dear Freesurfer-Experts, > > I am currently trying to measure Cortical Thickness of a > Volume-defined ROI in a patient measured at 4 timepoints. > > Basically, I am interested in a ROI resulting from fMRI activation > measured on Timepoint 1. > I would then like to get thickness values in the same ROI for all > Timepoints 1-4. > > I have read the instructions here: > https://surfer.nmr.mgh.harvard.edu/fswiki/VolumeRoiCorticalThickness > this works. > > now, my idea is: > > ROI from TP1 >> register to base image of longit. recon. ("base") > ROI from base >> TP1.long (from long recon) > ROI from base >> TP2.long (from long recon) > ROI from base >> TP3 long (from long recon) > ROI from base >> TP4.long (from long recon) > > OR should I simpy map my ROI to fsaverage and project it back all > individual timepoints? > ROI from TP1 >> register to fsaverage > ROI from fsaverage >> TP1 (not from long recon) > ROI from fsaverage >> TP2 (not from long recon) > etc. > > I understand that registration using the long. recon is more robust... > > Best regards, > Bastian > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > -- Martin Reuter, Ph.D. Instructor in Neurology Harvard Medical School Assistant in Neuroscience Dept. of Radiology, Massachusetts General Hospital Dept. of Neurology, Massachusetts General Hospital Research Affiliate Computer Science and Artificial Intelligence Lab, Dept. of Electrical Engineering and Computer Science, Massachusetts Institute of Technology A.A.Martinos Center for Biomedical Imaging 149 Thirteenth Street, Suite 2301 Charlestown, MA 02129 Phone: +1-617-724-5652 Email: mreu...@nmr.mgh.harvard.edu reu...@mit.edu Web : http://reuter.mit.edu _______________________________________________ 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.
