you can use the two stage model


On 1/15/2025 1:52 PM, Eszter Boros wrote:

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Dear FreeSurfer Team, 

        We are analyzing some longitudinal data (baseline [0], 6 months,
        1 year, 1.5 years) using FreeSurfer 7.4.1.

        We already analyzed two timepoints (basline[0] and 6 months) but
        now we are trying to look at 4 timepoints in total.

        

        I was wondering what the best way would be to do this. For the
        longitudinal processing, should we create 3 bases/within-subject
        templates between 0-6 months (this is already done), 0-1year,
        0-1.5years), or between 0-6months, 6months-1year,
        1year-1.5years. Or both?

        

        Also, is it okay to correct/edit only the bases?
        


          After the longitudinal processing, can we create a
          Longitudinal Table and apply the two-stage model
          (LongitudinalTwoStageModel) method? Or because of the 4 time
          points, we need to apply something else.

          

          Thank you for your help in advance!

        


        

        All the best, Eszter

      

      

      
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