The requesting system is an application capable of making Web Service requests and able to process data encoded as a DICOM File, per DICOM PS3.10 encodings.
Reference information may come in a wide variety of forms. It is expected to include at least the Study UID, Series UID, and Individual SOP instance information. This may be encoded as part of an HL7 reference within a CDA document, a DICOM SOP Instance reference, or other formats.
The request specifies
Requested Data set
Study UID
List of Series UID
List of SOP Instance UIDs
Optionally, it may also specify subset information
Instance and Frame Level Retrieve SOP classes subset information for selecting frames
No-pixel data request (using the Transfer Syntax parameter)
Anonymization
The response provides
SOP Instances, encoded per DICOM PS3.10.