you'll need to get a new version then. You won't need to reanalyze your anatomicals in the new version, but you will need it to run these programs.
doug corinna bauer wrote: > I'm using 4.4.0 > > On Fri, Jun 10, 2011 at 10:44 AM, Douglas N Greve > <gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>> wrote: > > > which version are you using? Both should be in both 5.0 and 5.1. > doug > > corinna bauer wrote: > > Hi Doug, > > I used the mri_compute_volume_fractions and fscalc commands > and got this error message: > > mri_compute_volume_fractions: Command not found. > fscalc: Command not found. > > Other FreeSurfer commands, such as mri_segstats are working > fine in the same batch script. > > Corinna > > > On Wed, Jun 8, 2011 at 2:30 PM, Douglas N Greve > <gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>>> wrote: > > > > corinna bauer wrote: > > Alright that should work. So do I use the pet.anat.nii > files > (from mri_vol2vol) as the input pet file to the > mri_compute_volume_fractions? > > No, use the pet volume. This does everything in the pet space. > > Also, has anyone published using this pv correction method > that you know of? > > I don't know. I think this is how they do pvc in pet, but I > really > don't know the lit. > > > An alternative method that I was thinking was to do > something > similar to the cortical thickness correction Salat used and > sample on either side of the gray/white boundary and the > gray/csf boundary and calculate the ratio. Do you think > this > could account for the effects of pv in pet? > > David's method was not for doing pvc, and I would not use > it for pet. > > doug > > > Corinna > > > On Wed, Jun 8, 2011 at 1:44 PM, Douglas N Greve > <gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>>>> wrote: > > Actually, I think it only will affect the volume > measurement for > each structure, so that's no good. There is not a > flag to > mri_segstats that will do this. If you have a > registration > between > your native pet data and the FS anat, then you can use > > mri_compute_volume_fractions regfile.dat pet.nii pvf > This will create pvf.{gm,wm,csf}.mgz > > You can then correct the pet with something like > fscalc pet.nii div pvf.gm.mgz pet.pvf.nii > > You can map the aparc+aseg into the pet space using > mri_label2vol > (and the reg from above), then use mri_segstats with the > files in > the native pet space. > > doug > > corinna bauer wrote: > > Hi Doug, > I will give that a try. How will this account > for the > p.v. in > pet data? Does it remove the voxels that are > mixed tissue > classes? Does it account for partial volume > effects between > neighbouring grey matter structures? > Corinna > > On Wed, Jun 8, 2011 at 1:06 PM, Douglas N Greve > <gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>>> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>>>>> wrote: > > Hi Corinna, > try adding --pv mri/norm.mgz > doug > > corinna bauer wrote: > > Hi all, > I am wondering if partial volume is taken > into > account when > calculating average uptake values of pet > data. I > know that > aseg.stats takes partial volume into > account and > I am > wondering if there is something similar > in place for > pet data? > From what I gather, most people when using > FreeSurfer > correct > for partial volume effects by regressing out > cortical > thickness, but no basis for this correction > method has been > provided. Any insight would be appreciated. > > n.b. to obtain the pet uptake values I used > mri_segstats --seg > mri/aparc+aseg.mgz --sum pet.segstats.dat --i > $petanat > --ctab > rois.txt > > Thank you, > Corinna > > > ------------------------------------------------------------------------ > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu> > <mailto:Freesurfer@nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu>> > <mailto:Freesurfer@nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu> > <mailto:Freesurfer@nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu>>> > <mailto:Freesurfer@nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu> > <mailto:Freesurfer@nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu>> > <mailto:Freesurfer@nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu> > <mailto:Freesurfer@nmr.mgh.harvard.edu > <mailto: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 > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>>> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>>>> > Phone Number: 617-724-2358 <tel:617-724-2358> > <tel:617-724-2358 <tel:617-724-2358>> > <tel:617-724-2358 <tel:617-724-2358> <tel:617-724-2358 > <tel:617-724-2358>>> > <tel:617-724-2358 <tel:617-724-2358> > <tel:617-724-2358 <tel:617-724-2358>> <tel:617-724-2358 > <tel:617-724-2358> > <tel:617-724-2358 <tel:617-724-2358>>>> Fax: > 617-726-7422 <tel:617-726-7422> <tel:617-726-7422 > <tel:617-726-7422>> > <tel:617-726-7422 <tel:617-726-7422> > <tel:617-726-7422 <tel:617-726-7422>>> > <tel:617-726-7422 <tel:617-726-7422> > <tel:617-726-7422 <tel:617-726-7422>> > <tel:617-726-7422 <tel:617-726-7422> <tel:617-726-7422 > <tel:617-726-7422>>>> > > > > Bugs: > surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > > FileDrop: > > www.nmr.mgh.harvard.edu/facility/filedrop/index.html > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > > > > 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. > > > > -- Douglas N. Greve, Ph.D. > MGH-NMR Center > gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>>> > Phone Number: 617-724-2358 <tel:617-724-2358> > <tel:617-724-2358 <tel:617-724-2358>> > <tel:617-724-2358 <tel:617-724-2358> <tel:617-724-2358 > <tel:617-724-2358>>> Fax: 617-726-7422 <tel:617-726-7422> > <tel:617-726-7422 <tel:617-726-7422>> > <tel:617-726-7422 <tel:617-726-7422> > <tel:617-726-7422 <tel:617-726-7422>>> > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > FileDrop: > www.nmr.mgh.harvard.edu/facility/filedrop/index.html > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > > > -- Douglas N. Greve, Ph.D. > MGH-NMR Center > gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>> > Phone Number: 617-724-2358 <tel:617-724-2358> > <tel:617-724-2358 <tel:617-724-2358>> Fax: 617-726-7422 > <tel:617-726-7422> > <tel:617-726-7422 <tel:617-726-7422>> > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > FileDrop: > www.nmr.mgh.harvard.edu/facility/filedrop/index.html > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > > > -- > Douglas N. Greve, Ph.D. > MGH-NMR Center > gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu> > Phone Number: 617-724-2358 <tel:617-724-2358> Fax: 617-726-7422 > <tel:617-726-7422> > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > -- 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: www.nmr.mgh.harvard.edu/facility/filedrop/index.html _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
