pydicom.datadict.dictionary_keyword# pydicom.datadict.dictionary_keyword(tag: int | str | tuple[int, int] | BaseTag) → str[source]# Return the keyword 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 keyword is being retrieved, in any of the forms accepted by Tag(). Returns: The keyword of the corresponding element. Return type: str Raises: KeyError – If the tag is not present in the DICOM data dictionary.