.. note::
    :class: sphx-glr-download-link-note

    Click :ref:`here <sphx_glr_download_auto_examples_metadata_processing_plot_add_dict_entries.py>` to download the full example code
.. rst-class:: sphx-glr-example-title

.. _sphx_glr_auto_examples_metadata_processing_plot_add_dict_entries.py:


=====================================================
Add dictionary items in the standard DICOM dictionary
=====================================================

This examples illustrates how to add dictionary items to the 'standard' DICOM
dictionary dynamically.

.. warning::

   Note that this is not a recommended solution in general but it is useful as
   a demonstration or for in-house programs only, or to get around elements
   missing from pydicom's DICOM dictionaries.






.. rst-class:: sphx-glr-script-out

 Out:

 .. code-block:: none

    (1001, 1001) Test One                            UL: 42
    (1001, 1002) Test Two                            OB: '12345'
    (1001, 1003) Test Three                          UI: 1.2.3.4.5




|


.. code-block:: python


    # authors : Darcy Mason
    #           Guillaume Lemaitre <g.lemaitre58@gmail.com>
    # license : MIT

    from __future__ import print_function

    from pydicom.datadict import DicomDictionary, keyword_dict
    from pydicom.dataset import Dataset

    print(__doc__)

    # Define items as (VR, VM, description, is_retired flag, keyword)
    #   Leave is_retired flag blank.
    new_dict_items = {
        0x10011001: ('UL', '1', "Test One", '', 'TestOne'),
        0x10011002: ('OB', '1', "Test Two", '', 'TestTwo'),
        0x10011003: ('UI', '1', "Test Three", '', 'TestThree'),
    }

    # Update the dictionary itself
    DicomDictionary.update(new_dict_items)

    # Update the reverse mapping from name to tag
    new_names_dict = dict([(val[4], tag) for tag, val in
                           new_dict_items.items()])
    keyword_dict.update(new_names_dict)

    # Test that it is working
    ds = Dataset()  # or could get one from dcmread, etc

    ds.TestOne = 42
    ds.TestTwo = '12345'
    ds.TestThree = '1.2.3.4.5'

    print(ds.top())

**Total running time of the script:** ( 0 minutes  0.001 seconds)


.. _sphx_glr_download_auto_examples_metadata_processing_plot_add_dict_entries.py:


.. only :: html

 .. container:: sphx-glr-footer
    :class: sphx-glr-footer-example



  .. container:: sphx-glr-download

     :download:`Download Python source code: plot_add_dict_entries.py <plot_add_dict_entries.py>`



  .. container:: sphx-glr-download

     :download:`Download Jupyter notebook: plot_add_dict_entries.ipynb <plot_add_dict_entries.ipynb>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.readthedocs.io>`_