DICOM PS3.3 2024c - Information Object Definitions

C.18.3 Composite Object Reference Macro

Table C.18.3-1 specifies the Attributes of the Composite Object Reference Macro, which convey a reference to a DICOM Composite Object that is not a DICOM Image or Waveform (such as an SR Document), or to an HL7 Structured Document.


  1. If a Softcopy Presentation State is to be applied to an Image, it should be referenced by an Image Reference Macro.

  2. Other SR Documents may be referenced by this Macro, but there is no facility to reference individual Content Items within those reports.

  3. HL7 Structured Documents include, in particular, those conforming to the Clinical Document Architecture (CDA). See Section C. for further details about this type of referenced object.

Table C.18.3-1. Composite Object Reference Macro Attributes

Attribute Name



Attribute Description

Referenced SOP Sequence



References to Composite Object SOP Class/SOP Instance pairs.

Only a single Item shall be included in this Sequence.

>Include Table 10-11 “SOP Instance Reference Macro Attributes”

DICOM PS3.3 2024c - Information Object Definitions