Almost. This will include medial wall voxels that are not GM. It will also not include subcort GM. It is better to use aparc+aseg.mgz and merge the GM ROIs together.

On 1/15/17 1:01 AM, Zhivago wrote:

Hi,

Are the lh.ribbon & rh.ribbon volumes the GM estimate from reconall? Can I used these as GM voxels?

Thanks, Zhivago...

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