hmmm, I agree, their is no easy measure of optimality. Can you explain a bit more about what you are trying to accomplish? On Mon, 15 Oct 2007, Nick Schmansky wrote:

Shrikanth,

I am re-posting this question to the freesurfer list, as others may have a better answer.

To the best of my knowledge, there is no single error measure for which a comparison can be made of the quality of a surface reconstruction across subjects. Rather, a visual inspection of each surface, making use of tksurfer (and tkmedit), will reveal gross defects, and how faithfully it follows the wm/gm boundary. Bruce may have other suggestions.

Nick

-------- Forwarded Message -------- From: kulashek@mappi.helsinki.fi To: Nick Schmansky nicks@nmr.mgh.harvard.edu Subject: optimal reconstruction. Date: Mon, 15 Oct 2007 11:31:40 +0300 Hi,

I have recently finished the construction of the inflated surfaces for 10 subjects using Freesurfer. Out of these 10 inflated surfaces how can I find the most accurate(optimal) suface, i.e. the surface with the least amount of error during the reconstruction.

Thank you.

Regards, Shrikanth

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