Hi Gabor
A workaround would be to upsample (make better resolution) the templates
used in VBM. If you like to have the common resolution of 1x1x1 mm for the
GM maps that will be subjected to statistics, upsample all the templates
used in VBM to 0.5x0.5x0.5 mm in order to avoid aliasing artefacts.
Be aware computation time increases, but this is not really a problem if you
use new hardware.
Cheers
Jürgen
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Jürgen Hänggi, Ph.D.
Division Neuropsychology
Institute of Psychology
University of Zurich
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------ Weitergeleitete Nachricht
> Von: Christian Gaser <[log in to unmask]>
> Antworten an: Christian Gaser <[log in to unmask]>
> Datum: Fri, 24 Feb 2012 16:41:47 +0000
> An: SPM Mailinglist <[log in to unmask]>
> Betreff: Re: [SPM] VBM8-write to different bounding box and voxel size
>
> Dear Gabor,
>
> On Thu, 23 Feb 2012 17:53:41 +0000, Gabor Oederland <[log in to unmask]> wrote:
>
>> I came across this message because I was wondering whether it is possible to
>> change the voxel size during "Estimate & Write" or "Apply Deformations" step
>> as well.
>>
>> Such an option would be really great. It could be used for biological
>> parametric mapping (BPM) analyses. In this case a voxel size of 2 mm would
>> probably be adequate, at least comparable to other fMRI studies.
>
> Unfortunately, there is no option to change voxel size.
>
> Regards,
>
> Christian
> ____________________________________________________________________________
>
> Christian Gaser, Ph.D.
> Departments of Psychiatry and Neurology
> Friedrich-Schiller-University of Jena
> Jahnstrasse 3, D-07743 Jena, Germany
> Tel: ++49-3641-934752 Fax: ++49-3641-934755
> e-mail: [log in to unmask]
> http://dbm.neuro.uni-jena.de
>>
>>
>> Already waiting for the next releases :-)
>>
>> Gabor
------ Ende der weitergeleiteten Nachricht
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