[caret-users] generating segmentation

[John Harwell]

The SureFit algorithm is complex algorithm that identifies the  
cerebral cortex.  It is described in "Van Essen, D.C., Drury, H.A.,  
Dickson, J., Harwell, J., Hanlon, D., and Anderson, C.H. and (2001).  
An integrated software suite for surface-based analyses of cerebral  
cortex. Journal of American Medical Informatics Association .  
8:443-459".  This paper can be downloaded from "http://brainvis.wustl.edu/wiki/index.php/Lab:Publications 
" or http://www.jamia.org/cgi/content/abstract/8/5/443. If you are  
unable to get the full text version, I can make a PDF version  
available to you, just let me know.

The "Threshold Into Segmentation" menu item simply creates a  
segmentation using all voxels that have a value within the selected  
range of values.  It might be useful for segmenting a subcortical  
structure.

-----------------------------------
John Harwell
john at brainvis.wustl.edu

Department of Anatomy and Neurobiology
Washington University School of Medicine
660 S. Euclid Ave   Box 8108
Saint Louis, MO 63110




On Apr 17, 2009, at 4:31 AM, Raemaekers, M.A.H.L.L. (Mathijs) wrote:

> Hi,
>
> When generating a segmentation from a T1 image using 'surefit  
> operations (segmentations)' I get a different segmentation  then  
> when using 'Threshold into segmentation' from the volume menu. The  
> segmentation from the surefit operations is a lot smoother and a bit  
> dilated when setting the same grey-white matter boundary. I seem to  
> be unable to find out how exactly this is achieved. I tried using  
> the volume dilate and erode command after thresholding into  
> segmentation, but did not manage to get the same results.
>
> Kind regards,
> Mathijs Raemaekers
>
>
> ******************************
> Mathijs Raemaekers
> Functional Neurobiology
> Utrecht University
> Padualaan 8
> 3584 CH Utrecht
> Netherlands
>
> tel: +31-30-2531904
> fax: +31-30-2532837
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