Thanks Doug. I was looking at a paper "ARANGO, C., MCMAHON, R. P., LEFKOWITZ, D. M., PEARLSON, G., KIRKPATRICK, B. & BUCHANAN, R. W. 2008. Patterns of cranial, brain and sulcal CSF volumes in male and female deficit and nondeficit patients with schizophrenia. Psychiatry Research: Neuroimaging, 162, 91-100.", which estimates sulcal CSF volume as 2.4.4. Sulcal CSF (sCSF)
The sCSF was derived by subtracting T otal B rain V olume and V entricular V olume from T otal C ranial V olume . Can such a strategy be explored using FreeSurfer output ? Thanks for your advice Mohammed On Thu, Oct 23, 2014 at 12:16 PM, Douglas N Greve <gr...@nmr.mgh.harvard.edu > wrote: > > 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. > >
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