DICOM PS3.3 2018a - Information Object Definitions

10.6 Request Attributes Macro
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## 10.6 Request Attributes Macro

Table 10-9. Request Attributes Macro Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Requested Procedure ID | (0040,1001) | 1C | Identifier that identifies the Requested Procedure in the Imaging Service Request. Required if procedure was scheduled. May be present otherwise. ### Note The condition is to allow the contents of this macro to be present (e.g., to convey the reason for the procedure, such as whether a mammogram is for screening or diagnostic purposes) even when the procedure was not formally scheduled and a value for this identifier is unknown, rather than making up a dummy value.
Accession Number | (0008,0050) | 3 | An identifier of the Imaging Service Request for this Requested Procedure.
Issuer of Accession Number Sequence | (0008,0051) | 3 | Identifier of the Assigning Authority that issued the Accession Number. Only a single Item is permitted in this Sequence.
>Include Table 10-17 “HL7v2 Hierarchic Designator Macro Attributes” |
Study Instance UID | (0020,000D) | 3 | The unique identifier for the Study provided for this Requested Procedure.
Referenced Study Sequence | (0008,1110) | 3 | Uniquely identifies the Study SOP Instances associated with this SOP Instance. One or more Items are permitted in this Sequence. See Section 10.6.1.
>Include Table 10-11 “SOP Instance Reference Macro Attributes” |
Requested Procedure Description | (0032,1060) | 3 | Institution-generated administrative description or classification of Requested Procedure.
Requested Procedure Code Sequence | (0032,1064) | 3 | A sequence that conveys the Procedure Type of the requested procedure. Only a single Item is permitted in this Sequence.
>Include Table 8.8-1 “Code Sequence Macro Attributes” | No Baseline CID is defined.
Reason for the Requested Procedure | (0040,1002) | 3 | Reason for requesting this procedure.
Reason for Requested Procedure Code Sequence | (0040,100A) | 3 | Coded Reason for requesting this procedure. One or more Items are permitted in this Sequence.
>Include Table 8.8-1 “Code Sequence Macro Attributes” | Context ID may be defined in the macro invocation.
Scheduled Procedure Step ID | (0040,0009) | 1C | Identifier that identifies the Scheduled Procedure Step. Required if procedure was scheduled. ### Note The condition is to allow the contents of this macro to be present (e.g., to convey the reason for the procedure, such as whether a mammogram is for screening or diagnostic purposes) even when the procedure step was not formally scheduled and a value for this identifier is unknown, rather than making up a dummy value.
Scheduled Procedure Step Description | (0040,0007) | 3 | Institution-generated description or classification of the Scheduled Procedure Step to be performed.
Scheduled Protocol Code Sequence | (0040,0008) | 3 | Sequence describing the Scheduled Protocol following a specific coding scheme. One or more Items are permitted in this Sequence.
>Include Table 8.8-1 “Code Sequence Macro Attributes” | Context ID may be defined in the macro invocation.
>Protocol Context Sequence | (0040,0440) | 3 | Sequence that specifies the context for the Scheduled Protocol Code Sequence Item. One or more Items are permitted in this Sequence.
>>Include Table 10-2 “Content Item Macro Attributes Description” | Context ID may be defined in the macro invocation.
>>Content Item Modifier Sequence | (0040,0441) | 3 | Sequence that specifies modifiers for a Protocol Context Content Item. One or more Items are permitted in this Sequence. See Section C.4.10.1.
>>>Include Table 10-2 “Content Item Macro Attributes Description” | Context ID may be defined in the macro invocation.

### 10.6.1 SOP Class UID in Referenced Study Sequence

Since Referenced Study Sequence (0008,1110) is Type 2 or 3 in each usage, the attribute may be zero length or omitted, respectively.

If Referenced Study Sequence (0008,1110) is present with an Item, the SOP Class UID of the Detached Study Management SOP Class (Retired) may be used in Referenced SOP Class UID (0008,1150).

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DICOM PS3.3 2018a - Information Object Definitions