DICOM Attribute

Number of Study Related Instances (0020,1208)

Keyword
NumberOfStudyRelatedInstances
VR
IS
VM
1

Definition

Count of stored SOP Instances in Study. See .

From NEMA PS3.3 §C.38.1.

Attribute Metadata

Tag
(0020,1208)
Keyword
NumberOfStudyRelatedInstances
Name
Number of Study Related Instances
Value Representation (VR)
IS
Value Multiplicity (VM)
1
Status
Active
Source
NEMA PS3.6 (table_6-1)

This attribute is part of the current DICOM Standard. Its value representation is IS with multiplicity 1.

Used in 1 Module

This attribute uses the IS Value Representation. Multiplicity 1 governs how many values may be encoded.

Integration Notes

Real-world integration guidance for engineers implementing this attribute in Mirth Connect, FHIR gateways, HL7 v2 bridges, and cloud DICOM services. Authoritative source data where available; reference examples and operational notes where they add value.

FHIR Mapping

  • ImagingStudy.numberOfInstances (0020,1208)

Source: HL7 FHIR R5 ImagingStudy (CC0).

HL7 v2 Equivalent

No standard HL7 v2 equivalent published for this attribute. Imaging-only attributes (Image Pixel data, technical acquisition parameters, modality-specific values) typically have no HL7 v2 carrier.

Cloud DICOM Support

  • AWS HealthImaging Preserved
  • Azure DICOM Preserved
  • Google Cloud Healthcare Preserved

Number Of Study Related Instances — derived metadata. Returned in QIDO-RS Study responses by all three vendors.

Per-vendor source URLs and verification date in src/content/dicom/cloud-support.json#_meta. Status taxonomy: required (mandated on Store), queryable (QIDO-RS matching key), preserved (stored as-is), promoted (AWS top-level metadata), unsupported (stripped/rejected).

Real-World Sample Values

No representative sample value available — this attribute isn't present in the de-identified pydicom fixture set. Add a fixture covering this attribute to expand coverage.

Mirth Connect Example

JavaScript transformer snippets for the most-queried tags will be added as coverage expands.

Common Operational Errors

Operational error patterns for the most-queried tags will be added as coverage expands.

DICOM Integration Services

Saga IT builds production DICOM integrations across Mirth Connect, FHIR gateways, and cloud imaging platforms. If you're working with NumberOfStudyRelatedInstances or the broader (0020,1208) context: