Hello Fred,
assuming you are using either spm8 or 12b, I think the easiest is to use
either new segment or the vbm-toolbox, both of which allow to directly
write out inverse deformation fields. You can then apply these to the
normalized brain pretty easily.
Cheers,
Marko
Fred Sampedro wrote:
> Dear SPM experts,
>
> I am interested to unnormalize a MNI305 T1 template to a specific native
> space T1 image. I have read and tried several options, which none of
> them worked:
>
> 1- Simply use Normalize using as a template the native space T1 and
> source the MNI305. --> This make a disaster.
>
> 2- Normalize as usual the native space T1 to the MNI305 image (this
> worked well), and then figure out with the _sn.mat file how to invert
> the transfomation to unnormalize the MNI305 image. I used the
> Deformation utility in SPM and chose the Inverse composition, and within
> that I chose the Imported _sn.mat, specified the parameter file (the
> actual _sn.mat), and left the voxel sizes and bouding box at NaN's. As
> the "Image to base inverse on" I chose the native space T1 image. This
> also produced a disaster output image.
>
> I am doing something wrong? How do you suggest I could accomplish this?
>
> Thanks a lot in advance,
> Fred Sampedro
--
____________________________________________________
PD Dr. med. Marko Wilke
Facharzt für Kinder- und Jugendmedizin
Leiter, Experimentelle Pädiatrische Neurobildgebung
Universitäts-Kinderklinik
Abt. III (Neuropädiatrie)
Marko Wilke, MD, PhD
Pediatrician
Head, Experimental Pediatric Neuroimaging
University Children's Hospital
Dept. III (Pediatric Neurology)
Hoppe-Seyler-Str. 1
D - 72076 Tübingen, Germany
Tel. +49 7071 29-83416
Fax +49 7071 29-5473
[log in to unmask]
http://www.medizin.uni-tuebingen.de/kinder/epn/
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