[Mrtrix-discussion] mrconvert: recognising multiple series

[Amanda Ng]

Hi,

I'm trying to convert DICOMs coming off our Agilent scanner using
mrconvert. It's recognising two series, when I know it should only be one.
I'm very sure this is a problem with the script creating the DICOMs.

So here's my mrtrix problem/question: I'm trying to modify the DICOM
headers (using dcmtk) so mrconvert recognises it as a single series. I've
tried it on the same data twice:

cp -r orig_data tmp1
dcmodify -i "(0008,103e)=30dirs_b3000_0.38" -i "(0018,1030)=DTI-epip"
tmp1/*.dcm
cp -r orig_data tmp2
dcmodify -i "(0008,103e)=30dirs_b3000_0.38" -i "(0018,1030)=DTI-epip"
tmp2/*.dcm

The first time it worked (ie recognises only one series), the second time
it didn't. I used dcmdump to read the dicom headers and used diff to see
where the differences were, and there are none. Ie:

dcmdump tmp1/*.dcm > tmp1.txt
dcmdump tmp2/*.dcm > tmp2.txt
diff tmp1.txt tmp2.txt

and no differences. :(

Any idea what's going on, ie why it worked the first time and every
subsequent time it doesn't? I'm assuming that mrtrix uses DICOM headers to
work out if there's multiple series.

Thanks in advance for any insight you can give me!
Amanda

--
Amanda Ng
Computational Biomedical Imaging Scientist

     Monash Biomedical Imaging
     Monash e-Research Centre
     Life Sciences Computation Centre, VLSCI

     Email: amanda.ng at monash.edu   Tel: +61 (0)3 9902 9804
     Bldg 220, 770 Blackburn Rd, Monash University, Melbourne VIC 3800
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