Dear Donna: I'm interested in the surface commonly used for EEG problems. I have 237 T1 MRIs and I'd like to have an automatic command line script to obtain those mean WM-pial surface (if this is the propper surface for my application) and I'd like to have corresponding points between those surfaces. I don't need to find a transformation between surfaces having corresponding landmarks, I need to obtain the corresponding landmarks. Can you help me to understand what software should I download, what should I run and do? Any help will be very appreciated Thank you in advance
Pedro On 6/20/07, Donna Dierker <[EMAIL PROTECTED]> wrote:
Hi Pedro, Yes -- Caret does surface-based registration, as described in the registration tutorial: http://brainmap.wustl.edu/caret/pdf/Caret_5.5_Tutorial_Segment.pdf If these two surfaces are from the same subject, then the core 6 landmarks (the set typically recommended for inter-subject registration) will not achieve optimal registration; in that case, additional landmarks (e.g., STS, POS -- as many as you can reliably identify across timepoints) are recommended. For each surface, you'll need to use Surface: Geometry: Generate inflated and ellipsoid from fiducial, to generate inputs the above tutorial expects. You might also consider trying John's new method for registration without flattening: http://brainmap.wustl.edu/pub/donna/PUBS/Reg_no_flat_and_new_border_drawing.pdf login pub password download I haven't tried it myself yet. I'm not sure whether your Caret version will include all the features you need to try this. Finally, we tend to use the midthickness (fiducial) surface, rather than the WM/GM surface. We generate a midthickness surface by averaging coordinates of Freesurfer-generated [lr]h.white and [lr]h.pial surfaces. Donna On 06/19/2007 04:48 PM, Pedro A. Valdes Hernandez wrote: > Hi: > I' completely new in this mailing list so maybe my question is a > little bit foolish > > I have two triangulated WM/GM surfaces, I'd like to know if I can find > corresponding anatomical points between them using CARET/SureFit... > > > Thank you in advance > Pedro > ------------------------------------------------------------------------ > > _______________________________________________ > caret-users mailing list > caret-users@brainvis.wustl.edu > http://pulvinar.wustl.edu/mailman/listinfo/caret-users > _______________________________________________ caret-users mailing list caret-users@brainvis.wustl.edu http://pulvinar.wustl.edu/mailman/listinfo/caret-users
