Sources for dicom public dictionaries:
 * the official source is the part 6 of the dicom standard (see
   http://www.dclunie.com/dicom-status/status.html#BaseStandard2001).
 * http://www.fpimage.com/Manuals/Imp/dicomdic.html
   an html group based presentation.
 * ftp://rsbweb.nih.gov/pub/nih-image/documents/dicom-dict.txt
   a C syntax oriented version provided by NIH (Jim Nash)
 * http://afni.nimh.nih.gov/afni/AFNI_Dist/afni_src.tgz
   extract mri_dicom_hdr.c (tar zxvf afni_src.tgz afni_src/mri_dicom_hdr.c)
   and look for the definitions of CMD_dictionary, META_dictionary,
   ID_dictionary, PAT_dictionary...
 * Actually, the *official* Dicom Data Dictionary 
   is on http://medical.nema.org/dicom/2003/03_06PU.pdf
   (check it every year, some tags are added, some names change)
   All C syntax oriented stuff, or anything else -but gdcm one-
   you can find on the net is very partial.
   WARNING : The Dicom Tag is an identifier inside the Dicom Dictionary,
             The Tag Name *is not*


Comment on the file NIH.dic, you can find the following discussion
on comp.protocol.dicom(*). As clearly specify by David Clunie all
thoses tags are extremely dangerous to use since they override some
other, we are only adding them to gdcm to be able to read /apparently/
some NIH images. SHOULD NOT EVER BE USED FOR WRITTING IMAGES !

(*)
[Re: Retired element VR and VM, was Re: 0028,3006 LUT Data (nightmare)]
...
> 'gdcm' Dicom dictionary uses a few tags, such as :
>  0018 106b UI 1 Synchronization Frame of Reference
This should be:
(0020,0200) Synchronization Frame of Reference UID
>  0028 0122 US 1 Waveform Padding Value
(5400,100A)    Waveform Padding Value
>   003a 0002 SQ 1 Waveform Sequence
(5400,0100)    Waveform Sequence
>   003a 0103 CS 1 Data Value Representation
(50xx,0103)    Data Value Representation
>   0040 0552 SQ 1 Specimen Description Sequence
No such attribute
>   0040 0553 ST 1 Specimen Description
No such attribute
>   0040 09f8 SQ 1 Vital Stain Code Sequence
No such attribute
>   0040 a16a ST 1 Bibliographics Citation
No such attribute
>   0040 a992 ST 1 Uniform Resource Locator
No such attribute

I suspect these were taken for the draft for trial implementation
of Sup 23 SR, which was problematic in many ways, not the least
of which was that some of its attributes with the same number
were re-used with different purpose and VR, etc.

Some may have been from early drafts of other supplements (e.g.,
waveform from the looks of things).

None of these should ever be used. 
...






Remarks about dicomV3Intera.dic:

This document is produced /somehow/ using document at:
[Intera 10.1]
http://www.medical.philips.com/main/company/connectivity/assets/docs/dicomcs/Conformance_Statement_MR_101_v04.pdf

[DICOM Conformance Statement]
http://www.medical.philips.com/main/company/connectivity/assets/docs/dicomcs/MR_InteraR104dcs.pdf


Remarks about GEMS.dic

This document is produced using:
GE Medical Systems HISPEED ADVANTAGE CT/i CONFORMANCE STATEMENT:
http://www.gehealthcare.com/euen/interoperability/docs/2162114_100r5.pdf