gt;>
>>
>> From: freesurfer-boun...@nmr.mgh.harvard.edu
>> [freesurfer-boun...@nmr.mgh.harvard.edu] on behalf of Douglas N Greve
>> [gr...@nmr.mgh.harvard.edu]
>> Sent: Thursday, December 15, 2011 3:02 PM
>> To: Cheryl McCreary
>>
y
> Cc: freesurfer@nmr.mgh.harvard.edu
> Subject: Re: [Freesurfer] Estimate Brain Volume Fraction
>
> total cortical WM should not include the ventricles. If the lateral
> ventricles are not segmented properly, then they would be included, but
> this would be an error. Otherwise, I think
mr.mgh.harvard.edu
> Subject: Re: [Freesurfer] Estimate Brain Volume Fraction
>
> total cortical WM should not include the ventricles. If the lateral
> ventricles are not segmented properly, then they would be included, but
> this would be an error. Otherwise, I think your equation is co
arvard.edu
[freesurfer-boun...@nmr.mgh.harvard.edu] on behalf of Douglas N Greve
[gr...@nmr.mgh.harvard.edu]
Sent: Thursday, December 15, 2011 3:02 PM
To: Cheryl McCreary
Cc: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] Estimate Brain Volume Fraction
total cortical WM should not i
total cortical WM should not include the ventricles. If the lateral
ventricles are not segmented properly, then they would be included, but
this would be an error. Otherwise, I think your equation is correct.
doug
Cheryl McCreary wrote:
> Hi Doug,
>
> Thanks for the quick reply. I will re-run t
Hi Doug,
Thanks for the quick reply. I will re-run the mri_segstats as below to get
the BrainSegNotVent volumes for consistency with the previous version.
Just for my own understanding using the default output aseg.stats from
recon-all, could whole brain parenchymal volume be calculated as [(to
Hi Cheryl,
You can regenerate the asseg.stats file with BrianVolNotVent with:
cd $SUBJECTS_DIR/yoursubject
mri_segstats --subject yoursubject --seg mri/aseg.mgz --sum
stats/aseg.stats --pv mri/norm.mgz --empty --excludeid 0 --excl-ctxgmwm
--supratent --subcortgray --in mri/norm.mgz --in-intensi
Hi Freesurfer experts,
I would like to determine brain parenchymal fraction (ie brain tissue
volume/estimated ICV) as an estimate of global atrophy. In previous
versions of FS, I used the BrianVolNotVent/ICV. Is this correct?
I am now using freesurfer version 5.0.0 and BrainVolNotVent is not lo
