Note

Click here to download the full example code

# 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.

Out:

    (1001, 1001) Private tag data                    UL: 42
    (1001, 1002) Private tag data                    OB: '12345'
    (1001, 1003) Private tag data                    UI: 1.2.3.4.5

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

    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)

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