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Product Update: Preserve Study Instance UIDs from Trusted DICOM Sources

· Leitura de 3 minutos

Overview​

OmegaAI now enables DICOM Stations to be marked as authoritative sources of study identity. When enabled, a study created from an HL7 order that receives images from an authoritative station will use the station's Study Instance UID (0020,000D) as the canonical identifier, replacing OmegaAI's placeholder UID. This resolves bidirectional workflow issues where annotations and reports sent back to source systems could not be matched due to UID mismatches.

What's New​

1. Authoritative DICOM Station Setting​

What changed: New toggle added to DICOM Station device configuration (Organization > Device > DICOM Station Features > Authoritative). Defaults to OFF for all new stations.

Benefit: Administrators can explicitly trust specific PACS and gateways as authoritative sources of study identity, enabling automatic reconciliation of annotations and reports sent back to the source system.

2. Study Instance UID Preservation and Coercion Warnings​

What changed: When Authoritative is enabled and a source UID differs from OmegaAI's order-generated placeholder, the source UID becomes canonical. The placeholder UID is retained in a merged-UID reference table. A C-STORE Warning (0xB000) is returned to the sending system, and the object records an Original Attributes Sequence (0400,0561) with the original UID, modification datetime, modifying system, and COERCE reason code.

Benefit: UID changes are now transparent and auditable. All previous UIDs remain discoverable through QIDO-RS, WADO-RS, C-FIND, and C-MOVE. Existing external references (worklist IDs, prior queries, links in reports) that stored the old UID continue to work.

3. Per-Station Trust Configuration​

What changed: Authoritative setting is configured per DICOM Station device, not globally. Each station is independently marked as trusted or untrusted.

Benefit: A single well-behaved gateway can be marked as authoritative without changing how any other station is treated. Gives administrators fine-grained control over which sources are trusted.

Important Notes​

  • Default Behavior: Authoritative is OFF by default for all DICOM Station devices, including newly created ones. No existing configurations change behavior on upgrade.
  • Bidirectional Workflows Only: Enable Authoritative only for sources where you expect to send annotations, reports, or other derived content back to the source system and require automatic UID-based matching.
  • Not Recommended For: Modalities that regenerate Study Instance UIDs on each acquisition (scanners, ultrasound), legacy systems with unstable or ad-hoc identifiers, or unidirectional workflows where studies flow only into OmegaAI.
  • Testing Required: Before enabling Authoritative for a production PACS or gateway, test the bidirectional workflow (send and return annotations) in a non-production environment to verify correct reconciliation at the source.

Where to Find It​

Location in OmegaAI:

Organization
  └─ Device
      └─ [Select DICOM Station Device]
          └─ Device Details Form
              └─ DICOM Station Features
                  └─ Authoritative ← Toggle is here (last item)

Available On: DICOM Station devices only (not on OmegaAI Link or API devices)

Updated Help Articles​