Yes, you can do it that way. I'm not sure Ive seen a paper that does it.

On 4/27/2020 2:15 AM, Paul wrote:

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Dear FreeSurfer Developers, To apply the proportion method to correct for head size for subcortical volumes the volume is divided by the eICV. To correct for eICV for surface area using the proportion method, is there any problem using mri_concat to multiple lh.area.10.fsaverage.mgh by 1/eICV and then use the output in qdec/mri_glm_fit? If this is ok, could you please let me know if there are any references where someone has done this? Thanks, Paul

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