DICOM Modality Worklist allows an imaging modality to query for scheduled procedure information. Instead of retyping patient and order details at the console, the operator selects the appropriate worklist item. This can reduce transcription errors and helps the acquired images carry identifiers that downstream systems use to match the study.
Key takeaways
- The modality queries a worklist provider; the provider returns matching scheduled procedure items.
- Worklist depends on upstream registration, ordering, scheduling, and interface mapping.
- A visible patient name alone does not prove that accession, requested procedure, and identifiers are correct.
01
Where the information comes from
A RIS, scheduling system, EHR interface, or broker commonly provides scheduled data to a DICOM worklist service. The data may originate across HL7 or another integration path before being translated into DICOM attributes. The modality sends a query with filters such as date, station AE Title, modality type, or location.
02
What a worklist item contains
A returned item can include patient identifiers and demographics, accession number, requested procedure, scheduled procedure step, referring provider, station information, and scheduling details. Exact population depends on workflow, interfaces, product support, and local policy. Attribute mapping should be documented and tested end to end.
03
Why matching can fail
The modality may query with the wrong station AE Title or date; the provider may not receive the order; a mapping can populate the wrong field; patient merges or updates may occur after selection; or downstream PACS matching rules may expect identifiers not sent in the image. Each system can look locally correct while the overall workflow still fails.
04
A safe troubleshooting sequence
Confirm the scheduled order exists upstream, that it reached the worklist provider, that the modality query matches the intended station and date, that the returned attributes are correct, and that acquired objects preserve the expected identifiers. Use test patients and approved integration procedures; do not expose real patient data in screenshots or external tools.
Related terminology
Terms with a published definition link directly to the glossary.
Authoritative starting points
These external sources support additional study; always use the version applicable to your equipment and jurisdiction.
DICOM Standard ↗