You can do the comparison, but the interpretation is difficult. If you see a difference, how do you know it is not due to the scanner? There's not much you can do ...
On 09/29/2016 02:54 PM, Martin Juneja wrote: > Hello FS experts, > > I have a data set of 20 subjects (patients) collected at location-1 > with 3T Siemens scanner. Also, I have a set of age-matched 20 subjects > (controls) collected at location-2 with 3T Siemens scanner. > > I am interested in comparing cortical thickness between controls and > patients using FreeSurfer but I am not sure if I can do that since I > have both the data sets collected at two different locations. > > I would really appreciate any inputs on this. > > I tried to find some papers on scanner differences but all I could > find was between 1.5 T vs 3T or 3T vs 7T. Is there any special > covariates I need to define for this purpose (if so then at which step > during analysis?) or is it not possible at all? > > Thanks. > > > _______________________________________________ > 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.
