dear fs community,

first of all thank you very much for helping me so far.

what i don’t understand is the difference between the value CSF (within the aseg.stat) and the CSFVol which shows up inside

the console while processing the command to generate the aseg.stat file.

additional to this i would like to know why some of this values directly showing up inside the console are not included/part of the final aseg.stat?!

is there a different way to get a file which includes this morphometric data?

(because like i told you: for example the aseg.stat value CSF differs from the inside the console shown value CSFVol (which is not part of aseg))

regarding to this ratio which i need its the VBR i meant (https://en.wikipedia.org/wiki/Ventricular-brain_ratio)

whats the best way to calculate this value? which parameters should i use?

my last question is about how to calculate the whole corpus calosum volume - is it possible to add all CC values to a value for the complete CC?

thank your very much in advance,

benjamin luerweg

_________________________________________________________________

Am 11.09.2017 um 22:01 schrieb Douglas N Greve <greve@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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