Hi Doug

I spoke with you at the Freesurfer tutorial last week about using mri_average to average my sulcal labels and get a probability map on fsaverage. You had suggested using "mri_concat" instead, which is a newer command. So, I performed the following command:

mri_concat all files --o output.mgz --mean --keep-datatype

I had to put --keep-datatype or else it tried to create an annot file.

This worked just fine.

My question then is concerning the min and max values when this average is overlayed in Freeview. See the snapshot attached. The values seem to be based on 256 instead of percentage and this is what happens when I used "mri_average" without specifying the "-p". Is there a way to illustrate the values in percentage in a similar way with mri_concat?

Many thanks!

Trisanna


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Ph.D. Candidate
McGill University
Integrated Program in Neuroscience
Psychology