Hey Freesurfer Experts,

I would like to use the Euler number as a quantitative quality measure of my reconstructed data as Rosen et al. (2017) recommend in their recently published paper. https://www.sciencedirect.com/science/article/pii/S1053811917310832

I figured I can use:

mris_euler_number [<options>] insurf     to get the euler number for each data set.

Which surface should I use though? The white or pial surface area or is there no preference?

Does anybody have experience with what range of Euler number would be acceptable? I read that 2 would be perfect but is 2.5 still ok? Or 1? Somehow I could not find any recommendation in the Rosen paper about thresholds or something similar. Did I miss something?

Any advice would be highly appreciated! Thanks!

Best,

Lea

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