No, not currently. This is quite a hard problem even if you have a T2. The pulse sequences are usually low enough bandwidth that fat from the scalp and skull marrow shift into the CSF spaces making it impossible to properly segment that area as CSF. If you wanted an approximate value, you could create a binary mask from the aparc+aseg.mgz, dilated it by 3 or 4 voxels, then erode it by the same amount, then remove the original mask. The remaining voxels will be something like the sulcal CSF.
doug On 10/22/2014 04:50 PM, Mohammed Goryawala wrote: > Hello FreeSurfer Experts, > > Is it possible to estimate the sulcal CSF volume in Freesurfer > processing? If not directly are there any indirect means that can give > me an estimate? > > Thank you > > Mohammed Goryawala, PhD > Department of Radiology > Miller School of Medicine, University of Miami > > > > _______________________________________________ > 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.
