[Freesurfer] Comparison of cortical thickness results

[Falk Lüsebrink]

Hi everyone,

 

I’d like to compare the individual cortical thickness results of Freesurfer
with the results of another software. The other software measures the
cortical thickness for example across the whole left parietal lobe. So I
have to get the according value of the whole left parietal lobe of
Freesurfer’s results. But I don’t know exactly how to do that.

 

Does someone have any suggestions how to get this value? At first glance I
would weight the average thickness of every structure belonging to the
parietal lobe given in the aparc.a2005s file by the number of vertices (or
maybe the gray matter volume in case the volume had a resolution of 1mm^3?).
Sum everything up and divide it by the number of vertices to get the mean
average across the parietal lobe. Would that result in the value I’m
searching for?

 

Thanks in advance,

Falk


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