Did you run qcache after installing the new version of preproc-sess? The new version has a "jacobian" correction needed to make the area and volume computations meaningful. If you have not installed the patch, you can get it from here:
ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/preproc-sess doug On 11/14/2012 12:37 PM, Mahinda Yogarajah wrote: > Dear Experts, > Given that volume is area x thickness, how would one explain > significant reductions in volume in a qdec anaysis comparing patients > and controls, but not significant differences in area or thickness in > the same regions where volume differences are seen. All analyses use > the same parameter settings. > Thanks. > Mahinda > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ 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.