From a pre-&post-intervention data set, is it possible to extract thickness values at those two time points just by using recon-all, that is, without running the full longitudinal processing stream (the Cross, Base and Long steps)? 

I aim not so much to compute the percentage change measure ( pc1 = (post-pre)/pre ), but simply to use the raw pre&post values for other analyses.

Many thanks, and happy holidays to all!

Tudor