Hi Maryam - You could compare the different measures like FA or MD across subjects along the length of the pathway.
There will be a different number of points along the pathway for each subject, so you'd have to interpolate the data points from all your subjects to do a point by point comparison. This can be done in matlab for example, and hopefully there'll be a built-in command for this in the next release! Hope this helps, a.y On Tue, 28 Jun 2011, Maryam Moteabbed wrote: > Hello Tracula Developers & Users, > > I can follow how to use the diffusion measures from > pathstats.overall.txt for each subject to run a group > analysis on the tracts. > > On the other hand I noticed there is also the > pathstats.byvoxel.txt which contains various > diffusion measures in each voxel along the highest > probability path. What are your suggested steps > for analyzing this text file for group comparison? > I am guessing developers had an analysis method > in mind when they decided to print this file out. > > Thank you in advance for your help. > > Best, > Mary > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > _______________________________________________ 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.
