[Insight-users] Dicom Image : How to access to all the tags

[siqi chen]

GDCM can access all the tag information, at least in my case.

http://www.creatis.insa-lyon.fr/software/public/Gdcm/

On Tue, Mar 9, 2010 at 4:58 AM, Mathieu Malaterre <
mathieu.malaterre at gmail.com> wrote:

> > edoardo.belletti at alice.it wrote:
> >>
> >> Hi Insight-users,
> >> I have a problem: I don't know how can I access to all the tags present
> in
> >> a dicom image.
> >> With the code used in the example of the manual
> >> (Examples/IO/DicomImageReadPrintTags.cxx) not all the tags are printed
> and
> >> for accuracy in the output there isn't the tag
> >> "SequenceOfUltrasoundReagions" that interest me. But I know that in the
> file
> >> which I run this tag is present.
> >> How can I access to this tag?
> >> I hope I was understandable.
> >> In particular the piece of code is:
> >
> On Tue, Mar 9, 2010 at 10:49 AM, Gomez, Alberto <alberto.gomez at kcl.ac.uk>
> wrote:
> > Hi,
> >
> > I have had the same problem but I think that there is no solution. It
> > depends on the manufacturer of the US acquisition system, and whether the
> > tags are private or not, and the data encrypted.
>
> No.
>
> The DICOM Attribute the OP refers to is a VR:SQ (a public element). As
> of now itk::GDCMImageIO does not load VR:SQ DICOM attribute. As
> described here:
>
> http://www.itk.org/Doxygen/html/classitk_1_1GDCMImageIO.html#_details
>
> ...
> Warning:
>    There are several restrictions to this current writer:
>
>        * Eventhough during the writing process you pass in a DICOM
> file as input The output file may not contains ALL DICOM field from
> the input file. In particular:
>              o The SeQuence DICOM field (SQ).
>              o Fields from Private Dictionary
>        * Some very long (>0xfff) binary fields are not loaded
> (typically 0029|0010), you need to explicitely set the maximum length
> of elements to load to be bigger (see Get/SetMaxSizeLoadEntry)
> ...
>
>
> You have to use the underlying DICOM library (GDCM 1.x or GDCM 2.x) to
> extract that particular -nested- information.
>
> HTH
> --
> Mathieu
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