Hi Tracy I guess so. We haven't quantified it at all.
cheers Bruce On Thu, 13 Sep 2012, Tracy A. Butler wrote: > Hi. Thanks for the response below. Does the fact that choroid plexus varies > so much in intensity mean that Freesurfer does not always accurately measure > CP volume? Do you think we should do some manual tracing to confirm > Freesurfer results? > > Thanks, > Tracy > > > From: Bruce Fischl <fis...@nmr.mgh.harvard.edu> > Date: Wed, Sep 12, 2012 at 7:14 PM > Subject: Re: [Freesurfer] Choroid Plexus in ventricles > To: Hugh Wang <wangxiuyua...@gmail.com> > Cc: freesurfer@nmr.mgh.harvard.edu > > > Hi Hugh > > it depends on the dataset. It's a bit mysterious to me why sometimes the > choroid is so bright and other times not. I've definitely seen it in the inf > lat ventricles. We included choroid to avoid confusing it with hippocampus so > I doubt we labeled any in the 3rd or 4th ventricles. > > cheers > Bruce > > > On Wed, 12 Sep 2012, Hugh Wang wrote: > > Dear Freesurfer Users, > When masking out the ventricles and choroid plexus from aparg+aseg, I found > there were choroid plexus volumes in lateral ventricles, but nothing in > inferior lateral ventricles or 3rd/4th ventricle. Did I miss those tiny > volumes or the Freesurfer didn't segment choroid plexus into that detail? > Thanks! > > Best, > Hugh > > P.S. I used Freesurfer 5.1 on a 64bit CentOS platform > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > _______________________________________________ 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.
