[Brains-users] image segmenation question

[Christoph Christmann]

Simone,

for my opinion these values are much to low. we use to

- do a very good coregistration
- trace the venous compartments carefully

if you have no movement artifacts in your data you should then end up 
with a good segmentation.

best regards

christoph

>I am trying to run the segmentation step and get very low kappa values
>for wm and gm: 0.71235 and 0.84025 respectively. I'm not sure if I can
>accept these values... I thought that they had to be above 0.95. I had
>not traced gm and wm rois but let the program use 197 as the sub
>cortical threshold. Your advice as how to proceed is greatly
>appreciated.
>
>
>
>Simone
>Perth, Western Australia
>
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-- 
Christoph Christmann                  christoph.christmann at zi-mannheim.de
Psychologist, MEE                     Fon/Fax +49 621 1703 63 18/05
Central Institute of Mental Health    http://www.zi-mannheim.de
Department of Clinical                D-68159 Mannheim J5
and Cognitive Psychology                       

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