Hi Allison - There's no quantification of motion built in right now, although we're looking into this issue and perhaps it'll be included in a future version. You could look at the transformation matrices from eddy_correct (in dmri/dwi.ecclog) and quantify the frame-by-frame motion from that. Motion would be more catastrophic for the FA/MD/etc values than for the tract reconstructions themselves.

a.y

On Thu, 28 Feb 2013, Allison Gruber wrote:

Dear Freesurfer,

I was wondering if there is any output from Tracula that quantifies head motion (or the head motion correction performed). If so, is there any standard in the field about an acceptable level or a cut-off point?

Thank you for your help, Allison Gruber _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer