Hi Scott we don't usually recommend having any voxel dimension > 1.5mm, and try to be closer to 1mm iso. I'm surprised that your results have been positive so far. I doubt the thickness estimates will be terribly sensitive, but there's nothing but compute time to be lost by trying.
cheers Bruce On Thu, 10 Feb 2011, Scott Sorg wrote: > Hi All, > > Is the following T1 sequence suitable for surface generation? > > "T1-weighted 3D SPGR (echo time 5 minimum; repetition time = 24 msec; flip > angle > = 30; field of view = 24 centimeters; slice thickness = 3 millimeters) > collected > in the axial plane." > > It's that 3 mm slice thickness that most concerns me. The sequence was not > initially intended for surface reconstruction, but I've run a few volumes > through recon-all and they've turned out better than I had expected. We're > primarily using the output for automated ROI generation, but I'm wondering if > the cortical thickness and volume estimations from such an acquisition are > suitable for further analysis (i.e., group comparisons, correlations). > > -SS > > > > _______________________________________________ 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.
