[MINC-users] nonlinear transformation

[Andrew Janke]

Hi Oliver,

The approach you are using looks fine to me.

Does the registration go "bad" at the linear or nonlinear step? ie:
have you checked what the image looks like if you resample with the
linear transformation only.


a

On 21/11/05, Oliver Winz <o.winz at fz-juelich.de> wrote:
> Hello everybody,
>
> i have a problem concering nonlinear transformation to stereotaxic
> space. The final MRI after transformation is very suspect. Maybe i
> forgot a very important part in the processing steps and someone can
> give a hint.
> Here is my complete procedure:
>
>
>  > dcm2mnc input*.IMA destdir/
>  > mritotal inputMRI.mnc outputTrans-Lin.xfm
>  > mritotal -nonlinear -transformation outputTrans-Lin.xfm inputMRI.mnc
> outputTrans-NonLin.xfm
>  > mincresample -transformation outputTrans-NonLin.xfm -like
> average305.mnc inputMRI.mnc outputMRI-toTAL.mnc
>
>  > mritotal -version
> Program mritotal, built from:
> Package MNI AutoReg, version 0.98r, compiled by owinz at medpc66
> (i686-pc-linux-gnu) on 2005-02-24 at 17:58:14
>
> I'm working on Pentium V 3.0 GHz, running SuSE Linux 9.2 with kernel
> 2.6.8-24.18-smp
> I get the DICOM MRI's from a Magneton VISION 1.5 T, Siemens, Erlangen,
> Germany) using a 3D T1-weighted MPRAGE sequenze (voxel size = 1 x 1 x 1 mm³)
>
> Everyone who's interested in a screenshot, please let me know, i will
> send to you.
> Thanks in advance!!
> Greetings,
> Oliver
>
>
>
> --
> Oliver Winz, M.Sc.
> Molecular Neuroimaging Group
> Institute of Medicine (IME)
> Research Centre Juelich
> D-52425 Juelich
> Germany
>
> Phone: +49 2461 61-6493
> Web: http://www.fz-juelich.de/ime/mni
> Location: Building 15.9, Room 3010
>
> _______________________________________________
> MINC-users at bic.mni.mcgill.ca
> http://www.bic.mni.mcgill.ca/mailman/listinfo/minc-users
>


--
Andrew Janke      (a.janke at gmail.com || www.cmr.uq.edu.au/~rotor)
Canada->Montreal                                   Cell: +1 (514) 924 2012