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 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.
