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I have written so many scripts of this sort that I can't remember what the
get_integrals script is doing exactly.  Doesa the script you have do anything
with the .mat field?  The discrepancy could be something to do with not
taking voxel sizes into account.  Are the voxel sizes in your .hdr files
correct?

The value returned by the script need not fall between 0 and 1, since it is
the integral of the values in the file.  Ideally, it should be converted into
units that are a bit easier to digest.  Volumes in litres are usually between
0 and 1.

Best regards,
-John

> I have run get_integrals on 54 smoothed, normalized, modulated, and
> segmented gray matter scans in spm2.  The global values are listed below.
>
> This script has always produced values between 0 and 1, which is logical
> because the intensity value of these images lies between 0 and 1.
>
> As you can see, these values lie between 1 and 10.  Is it possible that
> the values are off by a decimal place, or are they accurate globals for
> these scans?
>
> Rob McClure
>
>
> 6.8187
> 6.6808
> 7.9114
> 7.5617
> 7.3751
> 7.3255
> 8.7109
> 8.7260
> 6.6468
> 6.5391
> 7.0270
> 6.8599
> 7.6839
> 7.6745
> 5.9114
> 5.9194
> 8.1486
> 7.9044
> 8.3151
> 8.1477
> 7.0560
> 7.0159
> 7.6409
> 7.6673
> 8.3394
> 8.1614
> 7.3816
> 7.3207
> 7.9379
> 7.7792
> 7.4306
> 7.4355
> 6.9224
> 6.9282
> 7.0999
> 7.0534
> 7.7512
> 7.7731
> 7.3237
> 7.0115
> 6.9820
> 7.0082
> 8.1035
> 8.1800
> 7.5433
> 7.5983
> 8.2067
> 8.2396
> 6.8189
> 6.7892
> 9.4988
> 9.6953
> 8.0739
> 7.4935
>
> Robert K. McClure MD, Assistant Professor
> Department of Psychiatry, School of Medicine
> University of North Carolina at Chapel Hill
> Address:  Campus Box #7160
> Chapel Hill, NC, 27510-7160, USA
> E-mail: [log in to unmask]
> Office phone: 919-843-6629