I wrote the Slicer2 FreeSurfer QA code in 2005, and I know that I made a
presentation on it at one point, but I haven't been able to dig it up
yet. You can start here with my development notes and I'll try to get
you more information:
http://www.na-mic.org/Wiki/index.php/Multi-site_AD:QA If you have specific questions, feel free to send them to me.