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HE/001132 Page 46 of 92
Document No. 001132, Revision 2.0
Agfa HealthCare NodeID Livelink : 14140190 14 June, 2007
2.2.3.3 Association Initiation Policies
2.2.3.3.1 Activity – Query RIS
2.2.3.3.1.1 Description and Sequencing of Activity
The request for Query RIS is initiated by user interaction (pressing the “Query RIS” button) or automatically
at specific time intervals (configurable by the user). Depending on the configuration this can either be a query
based on a user provided accession number or be a complete worklist update based on date, modality and
Scheduled Station AE title.
RIS AE Department Scheduler
2. C-FIND Request (Worklist query)
1. Open Association
3. C-FIND Response(Worklist item)-status = pending
6. Close Association
4. C-FIND Response(Worklist item)-status = pending
5. C-FIND Response - status = success
Figure 2.2-4: Sample Sequencing Diagram for Refresh Worklist
2.2.3.3.1.2 Proposed Presentation Contexts
The RIS Application Entity is capable of proposing the Presentation Contexts shown in the following table:
Table 2.2-42: Presentation Contexts Proposed by DICOM Store AE
Presentation Context Table
Abstract Syntax Transfer Syntax
Name UID Name List UID List
Role
Extended
Negotiation
Modality
Worklist
Information
Model – FIND
1.2.840.10008.5.1.4.31 Implicit VR Little
Endian
1.2.840.10008.1.2 SCU None
2.2.3.3.1.3 SOP Specific Conformance – Modality Worklist SOP Class
(1.2.840.10008.5.1.4.31)
The Modality Worklist SOP class, defined within the Basic Worklist Management Service Class, defines an
application-level class of service which facilitates the communication of information to the imaging modality
about Scheduled Procedure Steps, and entities related to the Scheduled Procedure Steps.
This worklist is structured according to Scheduled Procedure Steps. A procedure step is a unit of service in
the context of a requested imaging procedure.