Dear SPM'ers,
I use SPM mainly to normalise PET images. To normalise a PET image that
is in the ECAT7 format, I convert it to Analyze, thereby also setting
the origin of the co-ordinate system (to the centre of mass of the
image) and zooming/resampling.
SPM calculates the transformation from the analyze image of the template
to the analyze image of the object image. But I want to use the
normalisation parameters for my original dynamic studies. Does anyone
know which steps are necessary to use transformation parameters
calculated for images having a certain voxel grid and centre of mass, to
transforma images having different voxel grids and centres of mass?
The resampling in the conversion to Analyze files causes the involved
images to have voxel sizes of 2x2x2 mm. The original studies may have
different voxel sizes (that is, different than 2x2x2 and different from
each other). Is that a problem in spm_write_sn?
Thanks in advance.
--
Met vriendelijke groeten,
Best regards,
Alle Meije Wink
PET-centrum
Academisch Ziekenhuis Groningen (AZG)
kamer Y0203
Email:
[log in to unmask]
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|