pydicom.datadict.dictionary_description# pydicom.datadict.dictionary_description(tag: int | str | tuple[int, int] | BaseTag) → str[source]# Return the description of the element corresponding to tag. Only performs the lookup for official DICOM elements. Parameters: tag (int or str or Tuple[int, int]) – The tag for the element whose description is being retrieved, in any of the forms accepted by Tag(). Returns: The description of the corresponding element. Return type: str Raises: KeyError – If the tag is not present in the DICOM data dictionary.