Hi Frida,

we model filter the output a 10 times by default. Not sure if this changed between versions, but it is the smoothing we do. You can change it by specifying the number of iterations with -f <# of iters> to mris_ca_label.

cheers Bruce On Wed, 7 Apr 2010, Christophe Destrieux wrote:

Hi Frida

I'm afraid I won't have any anatomical explanation for this smoothing, since most of the boundaries remained the same on the surfaces of the subjects used to train the atlas. I don't know if any minor changes occured in the labelling algorithm between these 2 versions ; maybe Bruce can tell.

Cheers

...

hi aside from new ROIS (i.e. the cingulate being divided into 3 parts), the 2009 looks like it has smoother/different boundaries than the 2005 one, even for ROIs that remain the same as the 2005. what is that a result of?

thanks, frida

-- Frida E. Polli, PhD Postdoctoral Fellow Brain & Cognitive Sciences, MIT 43 Vassar St., Room 46-4033 Cambridge, MA 02139 email: fpolli@mit.edu mailto:fpolli@mit.edu tel: (617) 324 2897

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