[Insight-users] GDCM orientation issue....

[Mathieu Malaterre]

Simon Warfield wrote:
> Mathieu,
> 
>  I have another DICOM issue I wonder if you know the answer.  I happen 
> to have quite a lot of DICOM data that encodes a parameter called the 
> b-value in tag 0043,1039 with a VR of IS.  Recent editions of the DICOM 
> standard have made the tag 0018,9087 for storing this parameter, but our 
> images don't use it.
> 
>    Can I modify the local DICOM data dictionary in some transparent way 
> so that ITK will learn about this new tag  , or do I need to modify  
> ./Utilities/gdcm/src/gdcmDefaultDicts.cxx  and recompile the entire 
> library ?

Don't modify gdcmDefaultDicts.cxx this is a cmake generated file, any 
modification you would do will be lost at configure time.

Instead open Insight/Utilities/gdcm/Dicts/dicomV3.dic and add a line 
anywhere in the file, like this one :

0043 1039 IS 1 Diffusion b-value

(you should maybe change the name to make a clear distinction from 
0018,9087).

Reconfigure and compile. As a check, gdcmDefaultDict.cxx should now 
contain a reference to this DICOM element.

HTH
Mathieu