Hi Shannon,

it is the slope of the linear fit into the thickness values (assuming the time axis is in years, else it will be mm/month or whatever).

Best, Martin

On Mon, 2012-08-13 at 11:55 -1000, Shannon Kogachi wrote:

Hi,

I had a question about the rate of change (thickening in mm/year) for the longitudinal processing. How is this value calculated when there are more than two timepoints per subject? Thank you!

-Shannon K. _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer