Even if your scan data does not cover the whole head, the bias
correction should still attempt to correct any intensity
nonuniformities.
Best regards,
-John
On 11 January 2012 13:24, Joshua Balsters <[log in to unmask]> wrote:
> Dear SPm list
>
> Apologies if this has been addressed already. I have some high
> resolution structural images focussed on the brain stem and i'd like
> to remove the bias field from the image. I’ve used the new
> segmentation tool in SPM to output a bias corrected image but I’m not
> sure if the bias field generated is valid because it’s a partial image
> and as such won’t map onto the whole brain priors used in
> segmentation. I guess my question is whether bias field correction via
> segmentation in SPM is valid in partial structural iamges?
>
> Thanks
> Josh
>
> --
> Joshua Henk Balsters, PhD
> Visiting Research Fellow
>
> Trinity College Institute of Neuroscience
> Lloyd Building
> Trinity College Dublin
> Dublin 2
> Ireland
>
> Tel: +353 1 896 8405
> http://people.tcd.ie/balsterj
> http://tcd.academia.edu/JoshuaBalsters
> http://www.tcd.ie/Neuroscience/niel/people/research-associates/j-balsters.php
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