DICOM PS3.18 2020b - Web Services

10.6.3.3.3 Instance Resources (Current)
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##### 10.6.3.3.3 Instance Resources

For each matching Instance, the origin server shall return all Attributes listed in Table 10.6.3-5, if present in the Instance. The Type column in the table below refers to the Query/Retrieve Attribute Types defined in Section C.2.2.1 “Attribute Types” in PS3.4. The unique key for an Instance resource search response is the SOP Instance UID (0008,0018).

Table 10.6.3-5. Instance Resources Search Response Payload

Attribute Name | Tag | Type | Condition
--- | --- | --- | ---
SOP Class UID | (0008,0016) | R |
SOP Instance UID | (0008,0018) | U |
Instance Availability | (0008,0056) | C | Shall be present if known
Timezone Offset From UTC | (0008,0201) | C | Shall be present if known
Retrieve URL | (0008,1190) | R | Shall be present if the Instance is retrievable by the Retrieve transaction
Instance Number | (0020,0013) | R |
Rows | (0028,0010) | C | Shall be present if known
Columns | (0028,0011) | C | Shall be present if known
Bits Allocated | (0028,0100) | C | Shall be present if known
Number of Frames | (0028,0008) | C | Shall be present if known

### Note

While some of the above Attributes in are optional in Table C.6-1 “Patient Level Attributes for the Patient Root Query/Retrieve Information Model” in PS3.4, they are consistent with the those required in [IHE RAD TF Vol2] Table 4.14-1.

In addition, the response shall contain:

- All other Instance Level Attributes passed as match parameters, or Study, Series, or Instance Level Attributes passed as includefield parameters that are supported by the origin server.

- If the "includefield" parameter has been specified in the request and its value is "all", Attribute include all available Instance Level Attributes

- If the Target Resource is All Instances, then include all Study level Attributes specified in Section 10.6.3.3.1.

- If the Target Resource is All Instances or Study's Instances, then include all Series level Attributes specified in Section 10.6.3.3.2.

- If a Private Data Element has been specified as an include parameter and it is supported by the origin server, the Private Data Element and its corresponding Private Creator Element.

The response may optionally include:

- the Available Transfer Syntax UID (0008,3002) to describe the Transfer Syntaxes that the origin server can assure will be supported for retrieval of the SOP Instance. See Section C.6.1.1.5.2 in PS3.4 .

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DICOM PS3.18 2020b - Web Services