Many thanks for your e-mail, Bruce. Would you mind just giving me a bit more detail about this, or let me know where I can find this information?
As I understand, the registration between individuals in Freesurfer doesn't depend on the talairach registration. Is that right? And how do individual talairach registrations contribute to the final talairach coordinates of group comparison results? Many thanks, Lucia > Hi Lucia, > > we almost never use the talairach except for reporting purposes. > > cheers, > Bruce > > On Tue, 20 Jan 2009, Lucia Garrido wrote: > >> Dear freesurfers, >> >> I'm having some troubles deciding whether the output from the Tailarach >> registration is good or not. I don't have hugely distorted brains as can >> be seen in the tutorials. But though they seem roughly aligned, there >> are >> some cases in which it seems it could benefit from changing the moveable >> image. In some cases, it seems that the moveable image is slightly >> 'smaller' than the actual brain. In other scans, it seems it could be >> slightly rotated. I'd be very grateful if you could check those images >> and >> let me know if this output is 'normal' or if I should improve it. Could >> I >> send you those images? What be the best way to do that? >> >> Finally, I'd be very grateful if you could let me know for which stages >> of >> the analysis is the Talairach transformation needed. I'm doing >> morphometry >> and pretend to compare cortical thickness between 2 groups. As far as I >> understand, the transformations are needed to be able to report the >> coordinates of results. Is that right? Are they needed for any other >> step? >> >> Thanks very much. >> >> Best regards, >> >> Lucia >> >> _______________________________________________ >> 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
