I don't know what the rest of your analysis is about. If you created maps of change in thickness per year and you extracted those values, then that is what you will get.
On 7/28/17 4:24 AM, Clara Kühn wrote: > Dear Doug, > > thank you so much. I now have a value for each of my participants. Since I > work with rate of change from pre to post time point I should interpret these > values as mm per year that each subjects changes in thickness in this > cluster, right? Because I have values between -3.37363 and 2.99830. Does > that mean that these subject would lose or gain 3 mm per year in thickness in > this specific area? > > Thank you for you help! > Clara > > ----- Ursprüngliche Mail ----- > Von: "Douglas N Greve" <[email protected]> > An: [email protected] > Gesendet: Donnerstag, 27. Juli 2017 19:10:50 > Betreff: Re: [Freesurfer] extract values for significant cluster > > You can use mri_segstats specifying the ocn as the segmentation, the > stack of thicknesses as the input, and --avgwf file.dat as the output. > Make sure to add --excludeid 0 to exclude background voxels > > > On 07/27/2017 06:18 AM, Clara Kühn wrote: >> Dear FreeSurfer experts, >> >> in the longitudinal 2 stage model I find a difference in rate between my two >> groups in right intra parietal sulcus for surface area (survives MC >> correction). I would like to look at the cortical thickness in that same >> cluster. Is it possible to use any of the output files from the MC >> correction as a mask or something to get the rate of change values for >> thickness in that region? Even though this region does not show a >> significant difference between the groups I would like to look at the >> individual values for rate of change in that specific region (like the ones >> I received in the cache.th30.abs.y.ocn.dat file) >> >> Could you please tell me if this is possible and how? >> >> Thank you very much! >> Clara >> _______________________________________________ Freesurfer mailing list [email protected] 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.
