Hey Mr. Greve,
thank your very much again!
if i understand you right, the inside the console shown up values can’t be
extracted into a separate file?
beside that, this values are of interest for me, so that i copied them to a
text file.
as you can see: Getting Brain Volume Statistics
...
SubCortGMVol 56306.000
SupraTentVol 963813.403 (960508.000) diff=3305.403
pctdiff=0.343
SupraTentVolNotVent 940278.403 (936973.000)
diff=3305.403 pctdiff=0.352
BrainSegVol 1109500.000 (1106935.000) diff=2565.000
pctdiff=0.231
BrainSegVolNotVent 1082437.000 (1082065.403)
diff=371.597 pctdiff=0.034
BrainSegVolNotVent 1082437.000
CerebellumVol 145310.000
VentChorVol 23535.000
3rd4th5thCSF 3528.000
CSFVol 963.000,
OptChiasmVol 154.000
MaskVol 1526326.000
am i right that this CSFVol is the Volume of all ventricles not including
the extra cerebral CSF?
i tried to calculate the CSFVol reverse by calculating: VentChorVol -
Choroidplexus(2*) = ..and it didn’t fit with the CSFVol?! why this?
and what exactly is the VentChorVol and 3rd4th5thCSF for?
im a bit confused about all this lables and im sorry for asking you so much but
i would really appreciate to solve this pity situation.
do you have a kind of an overview?
thank you in advance again,
ben luerweg
> Am 11.09.2017 um 22:01 schrieb Douglas N Greve <gr...@nmr.mgh.harvard.edu>:
>
>
>
> On 09/11/2017 01:20 PM, Benjamin Luerweg wrote:
>> dear fs community,
>>
>> as a kind of a freesurfer greenhorn i would kindly ask you to help me
>> out with identifying the different labels used by freesurfer.
>> after using mri segstats most of the labels seem to be describing
>> thereselfs in proper way.
>>
>> what i don’t understand are for example the different volume values
>> showing up inside the console after entering the segstat command.
>>
>> VentChorVol what does this label explain?
> Volume of all ventricles plus the volume of the chorioid plexus.
>>
>> CSFVolwhy is this volume differing to the one within the segstat file?
> Volume of all ventricles (not well named because it does not include
> extra cerebral CSF)
>>
>> and finally i would really love to know how to calculate a correct
>> brain to liquor ratio?!
> Do you mean brain volume to total CSF volume? See above
>>
>>
>> kind regards,
>> ben
>>
>>
>> _______________________________________________
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>> Freesurfer@nmr.mgh.harvard.edu
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>
> --
> Douglas N. Greve, Ph.D.
> MGH-NMR Center
> gr...@nmr.mgh.harvard.edu
> Phone Number: 617-724-2358
> Fax: 617-726-7422
>
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>
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