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The variability of the origins is definitely the problem, and probably
relates to your conversion software including something in the headers
that confuses SPM (eg it may put some other info in the field that SPM
uses for the origin).  If you have DICOM data, then the DICOM conversion
within SPM may work for your data.

Best regards,
-John

-----Original Message-----
From: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]]
On Behalf Of Jamil Zaki
Sent: Thursday, August 09, 2007 12:04 AM
To: [log in to unmask]
Subject: [SPM] Realignment error spm2

Hi All -- 

I've searched the archives for this topic, but can't find much
information on it.  

I'm getting an error I haven't seen before when attempting to realign my
functional images (error 
pasted below).  When looking at multiple images with check_reg, I notice
that they have very 
different origins (and that the numbers that are part of the origin seem
strange), and think this 
might be part of the problem.  Could this have occured due to problems
converting from the 
original dicom images?  Does anyone know about a solution to this?

Thanks very much for any help,

Jamil



    * - SPM2: spm_realign  ---------------------------------------------

        There is not enough overlap in the images
        to obtain a solution.
         
        Offending image:
        /Volumes/Brainiac/Emp_Acc_fMRI/s01/funs/e1/vols0002.img
         
        Please check that your header information is OK.

        -----------------------------------------  17:56:12 - 08/08/2007

??? Error using ==> spm_realign>error_message
insufficient image overlap