Dear All,

I tried to extract a surface from a MRI scan (T1, 1.5T) using Freesurfer 3.0.3 on a Linux computer. I just run "recon-all" script for the same scan  6 times (same computer, no human interaction). To my supprise, I got 6 different results ( different #triangles, #vertices).  Go back to check the intermediate results, all T1.mgz, WM.mgz are identical, but lh.orig different. Can someone tell me why my results are not consistent?

Thanks very much for your help.

Li-Chen