[MINC-users] N3 crashes when processing a volume on MacOSx

[Thorarin Bjarnason]

Hello All,

I recently got minc tools running on Mac OS X 10.4.7 < with effort ;-)
>. I am interested in running N3. I have no trouble taking one file
from a dicom set and processing it <by converting it to mnc and
running nu_correct>. Processing an entire volume is not working as
well, unfortunately. Everything appears to be running fine until the
end <I think> where nu_correct crashes. My work flow is as follows:

I convert dicom to mnc using:
dcm2mnc * .

I go to the mnc output dir and use the following command:
nu_correct -fwhm 0.15 -distance 50 -stop 0.0001 -iterations 1000
InputFile.mnc test.mnc

and the computer works away for a while with the following output:
Processing:..............Done
Not implemented yet in cache_volume_range_has_changed()
Not implemented yet in cache_volume_range_has_changed()
Processing:..............Done
      ... etc ...
Not implemented yet in cache_volume_range_has_changed()
Not implemented yet in cache_volume_range_has_changed()
Number of iterations: 138
CV of field change: 9.77015e-05
Transforming slices:..................................................Done
Not implemented yet in cache_volume_range_has_changed()
Not implemented yet in cache_volume_range_has_changed()
Transforming slices:..................................................Done
Files /var/tmp/nu_correct_7953//test_field.mnc and InputFile.mnc have
different step coordinates (zspace)
nu_evaluate: crashed while running mincmath (termination status=256)
nu_correct: crashed while running nu_evaluate (termination status=256)

A test.imp file was created. I tried changing some of the imput
parameters when I call the nu_correct function, but I get the same
error.

Does anyone know how I can fix this error?

Kind Regards,

-- 

Thorarin Bjarnason, BEng, MASc
www.imaginginformatics.ca