QDEC does not allow it, but you can do it with mri_glmfit with the --pvr option. Run mri_glmfit with --help to get more info. doug
On 01/25/2015 11:16 AM, angela.fav...@unipd.it wrote: > Hi all, > I wrote a paper about gyrification in a sample of malnourished patients. I > found only little overlap between maps of significantly rediced cortical > thickness and maps of significantly reduced gyrification index (in > comparison to a group of healthy controls). > One of the reviewer raised the question that this is not sufficient to > demonstrate that reduced gyrification is not due to reduced cortical > thickness (or GM volume) and suggest to perform a between group analysis > using cortical thickness (or volume) maps as vertex-wise covariates. > Is it possible to perform this type of analysis? I believe that QDEC does > not allow it > > Thank you > > Angela > > > > > >> Hi Maria >> >> it's really hard to say - you'll need to try it out. There aren't strong >> prior constraints on skull shape, but if the shape of the brain is too >> different, things may degrade >> >> Bruce >> >> >> On Fri, 23 Jan 2015, Maria Holland wrote: >> >>> Hi all, >>> I am starting a project analyzing patients with cranial deformities. >>> How >>> robust is the automatic cortical reconstruction process - i.e., would it >>> be >>> able to handle deformed skulls? Similar to this picture: >>> >>> http://upload.wikimedia.org/wikipedia/commons/1/1f/Single_suture_synostosis >>> .png >>> >>> I am also wondering about the possibility of getting information about >>> the >>> intermediate steps of the local gyrification calculation. Like, could >>> we >>> get information on the pial and outer pial surface paths on each >>> individual >>> slice, before that information is turned into a 3D surface? >>> >>> Thanks for your help! >>> >>> ~ Maria >>> >>> _______________________________________________ >> 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 > > -- 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
