Hi Bruce, Exactly I want to be sure that I process my data in the same way, so not introduce bias with partially use of -bigventricles option.
1) I tried the recon-all process on AD patient with big ventricles and atrophy with and without the -bigventricles option. I am not pretty sure of which process is the best in terms of segmentation according the aseg.mgz ? (I'll send you T1 and aseg.mgz for the two process) 2) Considering cortical atrophy, a lot of gray matter hasn't been taken account in the cortex segmentation. Is there an automatic way to improve the cortical segmentation in case of visible atrophy ? Best regards, Matthieu 2015-12-03 18:03 GMT+01:00 Bruce Fischl <fis...@nmr.mgh.harvard.edu>: > Hi Matthie > > do you find that it doesn't work well without bigventricles? You just > want to be sure that you process your data in the same way so there is no > bias in the results. We have found that most early AD cases work fine > without needing special flags. It's more for late stage AD or hydrocephalus > and such. > > cheers > Bruce > > > > On Thu, 3 Dec 2015, Matthieu > Vanhoutte wrote: > > > Dear FreeSurfer experts, > > > > My question is in the title. I'm working on Alzheimer case where most of > the cases have large > > ventricles. Is it better in general use to apply -bigventricles option > on all subjects (for > > homogeneous calculus or something like that...) or to distinct subtle > cases of patients with not so > > big ventricles ? > > > > Thanks in advance for helping ! > > > > Best regards, > > > > Matthie > > > > > _______________________________________________ > 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 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.
