DICOM PS3.4 2021d - Service Class Specifications

Z.6 SOP Class Definitions (Current)
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## Z.6 SOP Class Definitions

### Z.6.1 Composite Instance Retrieve Without Bulk Data SOP Class Group

In the Composite Instance Retrieve Without Bulk Data Only Information Model, only a single Retrieve Level is used.

Table Z.6.1-1. Retrieve Level Value for Composite Instance Retrieve Without Bulk Data

Retrieve Level | Value in (0008,0052)
--- | ---
Composite Instance | IMAGE

### Note

The use of the word "IMAGE" rather than "Composite Instance" is historical to allow backward compatibility with previous editions of the Standard. It should not be taken to mean that Composite Instances of other than image type are not included at the level indicated by the value IMAGE.

#### Z.6.1.1 Composite Instance Retrieve Without Bulk Data Information Model

##### Z.6.1.1.1 E/R Model

The Composite Instance Retrieve Without Bulk Data Only Information Model has only a single level: IMAGE.

##### Z.6.1.1.2 Composite Instance Level

Table Z.6-1 defines the keys at the Composite Instance level of the Composite Instance Retrieve Without Bulk Data Query/Retrieve Information model.

Table Z.6-1. Composite Instance Level Keys for the Composite Instance Retrieve Without Bulk Data Information Model

Attribute Name | Tag | Matching Key Type
--- | --- | ---
SOP Instance UID | (0008,0018) | U

##### Z.6.1.1.3 Scope of the C-GET Commands and Sub-Operations

A C-GET request may only be performed at the IMAGE level of the Query/Retrieve Model. A C-GET indicates that selected individual Composite Instances, without bulk data Attributes shall be transferred.

#### Z.6.1.2 Conformance Requirements

An implementation may conform to one of the SOP Classes of the Composite Instance Retrieve Without Bulk Data SOP Class Group as an SCU, SCP or both. The Conformance Statement shall be in the format defined in PS3.2.

##### Z.6.1.2.1 SCU Conformance

An implementation that conforms to one of the SOP Classes of the Composite Instance Retrieve Without Bulk Data SOP Class Group as an SCU shall support retrievals against the Query/Retrieve Information Model described in Section Z.6.1.1 using the C-GET SCU Behavior described in Section Z.4.2.2. An implementation that conforms to one of the SOP Classes of the Composite Instance Retrieve Without Bulk Data SOP Class Group as an SCU, and that generates retrievals using the C-GET operation, shall state in its Conformance Statement the Storage Service Class SOP Classes under which it shall support the C-STORE sub-operations generated by the C-GET.

##### Z.6.1.2.2 SCP Conformance

An implementation that conforms to one of the SOP Classes of the Composite Instance Retrieve Without Bulk Data SOP Class Group as an SCP shall support retrievals against both levels of the Retrieve Information Model described in Section Z.6.1.1 using the C-GET SCP Behavior described in Section Z.4.2.3. An implementation that conforms to one of the SOP Classes of the Composite Instance Retrieve Without Bulk Data SOP Class Group as an SCP, and that satisfies retrievals using the C-GET operation, shall state in its Conformance Statement the Storage Service Class SOP Classes under which it shall support the C-STORE sub-operations generated by the C-GET.

#### Z.6.1.3 SOP Classes

The SOP Classes in the Composite Instance Retrieve Without Bulk Data SOP Class Group of the Query/Retrieve Service Class identify the Composite Instance Retrieve Without Bulk Data Only Information Model, and the DIMSE-C operations supported. The Standard SOP Classes are listed in Table Z.6.1.3-1.

Table Z.6.1.3-1. SOP Classes for Composite Instance Retrieve Without Bulk Data

SOP Class Name | SOP Class UID
--- | ---
Composite Instance Retrieve Without Bulk Data - GET | 1.2.840.10008.5.1.4.1.2.5.3

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DICOM PS3.4 2021d - Service Class Specifications