Hi Leo

are you trying to create a surface-based ROI or a volume one? What do you want to do with it after it exists?

cheers Bruce On Mon, 4 Jul 2011, leonardo kay wrote:

Hi freesurfer 's Can anyone help me how to create a ROI mask. I have read the Cortical Thickness of a Volume-defined ROI tutorial but it doesn't specify how to generate that ROI.nii file. How many points are needed? What brain image must be used as a reference? Any help will be greatly appreciated Best regards.

-- Leo Kay.