Hi Ian,
as a further comment to John's reply, if you want to normalize the
coregistered images later-on anyway, there is no need to do reslicing;
coregister-estimate is just fine as it will encode the rigid-body
translation in the header of the file (note the updated file date) and
this translation will be taken into account when later normalizing the
image. This saves you one interpolation step.
Also, you say that "realignment and smoothing" works fine until then, to
which I only want to remark that you may want to smooth your images as
the last step of your preprocessing pipeline, and not before
coregistration (may mess up the histogram) and before spatial normalization.
Hope this helps,
Marko
Ian Ballard wrote:
> Hello,
> I am using the current, updated version of SPM 8 with Matlab 2010a. When
> I coregister my functional images to my anatomical images, the job runs
> fine and outputs images (nifti format). However, if I try to display
> these images, i get the following error:
> Image can not be resampled.
> Also, these images can't be used for normalization. I get the message
> "File too small"
> Strangely, I can open these images in another viewer like mango just
> fine, and the voxel and image dimensions match those of the anatomical
> image. Even more strangely, when I did the coregistration in reverse to
> troubleshoot(ie, jiggle the anatomical to match the functional),
> everything works fine and I can display the coregistered anatomical
> images, and even use these to normalize the functional images. All
> preprocessing up to this step (realignment and smoothing) also worked
> fine and displays normally.
> Any help would be greatly appreciated,
> Ian
>
--
____________________________________________________
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
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http://www.medizin.uni-tuebingen.de/kinder/epn
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