> I have a problem about the scalefactor and the
> thresholded mean voxel value (TMVV). My patient had Diabetes and the brain
> PET scan showed decreased global uptake. Is there any way to get every
> patient's scalefactor or TMVV so that I can see how low in this patient
> compared with other controls?
I think that when you run the statistics part of SPM, it will compute
"globals" for each image. I think these are displayed in one of the
PostScript pages saved by SPM.
V=spm_vol(spm_get(Inf,'*.img'));
gl = zeros(length(V),1);
for i=1:length(V),
gl(i) = spm_global(V(i));
end;
The "globals" are then available from the variable gl.
Best regards,
-John
--
Dr John Ashburner.
Functional Imaging Lab., 12 Queen Square, London WC1N 3BG, UK.
tel: +44 (0)20 78337491 or +44 (0)20 78373611 x4381
fax: +44 (0)20 78131420 http://www.fil.ion.ucl.ac.uk/~john
|