Hi,
There's a couple of ways you could do this, one is:
1) Run
fslstats <myInputImage> -k <ROImask> -P 80
and record the number
2) Run
fslstats <myInputImage> -k <ROImask> -l <number from step1> -M
Hope this helps,
Kind Regards
Matthew
> Dear FSL experts,
> How can I calculate the mean FA value from 20% highest voxels for ROI. i.e If I have FA map and mask for the left precentral gyrus. How can I calculate the mean FA values from 20% highest voxels of the precentral gyrus mask?
>
> Thanks for any advice!
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