In order to serve as a Service Class Provider (SCP) of the Basic Worklist Service Class, a DICOM Application Entity (AE) possesses information about the Attributes of a number of managed worklist entries. This information is organized into Worklist Information Models.
Worklists are implemented against well defined Information Models. A specific SOP Class of the Basic Worklist Service Class consists of an informative Overview, an Information Model Definition and a DIMSE-C Service Group. In this Service Class, the Information Model plays a role similar to an Information Object Definition (IOD) of most other DICOM Service Classes.