Hi Bruce, Thank you for the quick response!
In the meanwhile, does that also apply to cortical thickness and volume? Thank you! Andreia Quoting Bruce Fischl <fis...@nmr.mgh.harvard.edu>: > Hi Andreia > > the issue is that the BA labels contain every point that has any non-zero > probability (no matter how small!) of being in that label. So the total > label area is almost certainly always bigger than the actual BA. Anastasia > has some scripts for automatically computing the correct threshold, and I > believe she and Nick integrated them into 5.2 so that the stats are > computed both thresholded and unthresholded, hopefully they can comment. > Bruce > > > > On Fri, 22 Mar 2013, _andre...@sapo.pt > wrote: > >> Hi all, >> >> I'm using FS 5.0 and some time ago I was told by Bruce that I had to >> threshold the BA in order to have an approximate area when overlaying >> in the inflated surface. To get surface area values I also need to use >> the label_area and put a threshold >> having the possibility to choose the surface that I want, either white >> or pial. >> >> But I can also get the BA stats in a table for all subjects and areas >> using either mris_anatomical_stats (on each label) or usinga script by >> Jamaan to get the table (since I already have the ?.BA.stats files), >> right? >> >> My question is, which is the better/correct way to get the thickness >> and surface area values of the BA to export for statistical analysis >> since there are the thresolds issue. >> >> I want to study mainly cortical thickness and surface area but also >> look also at the volume (which is surface-based, thus >> thickness*surface are will not be = volume since they are an average >> from each label, right?). >> >> I' not sure of which approach to follow now... Does it depend on the >> measure I'll be using? >> >> Thank you! >> >> Andreia >> >> >> _______________________________________________ >> 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. _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
