Dear Sven,
have you tried the Volumes toolbox? In the "single volumes" section there
is an item called rescale volumes. This may help you, since I assume that
you are running into the problem to read SPM-Analyze data with non-SPM
software which does not account for scaling factors introduced by SPM.
Cheers,
Volkmar
On Sun, 30 Jul 2006, Sven Haller wrote:
> Dear all
>
> I use SPM2 to spatially normalize a contrast-enhanced MR perfusion study. The
> spatial normalization itself works very well.
> BUT the data is scaled to another range. This is irrelevant for fMRI, but for
> my purposes, I want to have the values of the MRI scans.
>
> The values e.g. of the CSF in the lateral ventricle are in the range of
> approx. 2400 in the original data (siemens dicom, avanto).
> After normalization, the range is approx. 30000.
>
> How do I know the scaling factor?
> Is is a linear scaling?
> Is there any possibility not to scale the data?
> If not, how can I re-scale the normalized data to the original values?
>
> Thank you very much
> Sven
>
>
>
>
--
Volkmar Glauche
-
Department of Neurology [log in to unmask]
Universitaetsklinikum Freiburg Phone 49(0)761-270-5331
Breisacher Str. 64 Fax 49(0)761-270-5416
79106 Freiburg
|