On 01/09/2014 08:00 AM, car...@van-vlodrop.de wrote: > > Dear freesurfer community, > > I'm trying to do my analysis in qdec right now with the question of > differences of cortical-thickness between patient and control. > > Instead I have a few questions about the different modulations in qdec: > > In 'Design' it's possible to choose from different measurements. Are > the options 'surface-based' and 'morphometric' the best ones for my > question and what do 'volume-based' and 'functional' mean in this context? > Surface-based and morphometric are basically the same (and have to be selected together). Volume-based and functional have not been implemented yet and do nothing. > > Is 10 the standard dimension of smoothing in qdec? How does the > smoothing changes related to ROI's? > 10 is the default and is usually what I use. This is somewhat arbitrary. There is no known way to select an optimal smoothing level. I don't understand your question about ROIs doug
> I would be grateful for your comments. > > Yours sincerely, > > Carina > > > > _______________________________________________ > 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: https://gate.nmr.mgh.harvard.edu/filedrop2 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.
