Semantic DICOM Ontology	CIDOC Conceptual Reference Model	Source
http://www.cidoc-crm.org/cidoc-crm/E31_Document	http://semantic-dicom.org/dcm#Document	LOOM
http://www.cidoc-crm.org/cidoc-crm/E38_Image	http://semantic-dicom.org/dcm#Image	LOOM