3.1 Codes and Controlled Terminology Definitions:

The following definitions are commonly used in this Part of the DICOM Standard:

3.1.1 Baseline Context Group Identifier (BCID): Identifier that specifies the suggested Context Group for a Code Sequence Attribute.

3.1.2 Defined Context Group Identifier (DCID): Identifier that specifies the Context Group for a Code Sequence Attribute that shall be used.

3.1.3 Extensible Context Group: Context Group that may be extended by a particular application by inclusion of additional concepts.

3.1.4 Non-Extensible Context Group: Context Group whose defined set of concepts shall not be extended by an application.

3.1.5 Context Group: A set of coded concepts defined by a Mapping Resource forming a set appropriate to use in a particular context.

3.1.6 Context Group Version: Version of a Context Group.

3.1.7 Context ID (CID): Identifier of a Context Group.

3.1.8 Mapping Resource: A resource that defines context-dependent usage constraints (i.e. Value Set or Relationship Type restrictions) for Attributes. A resource that specifies the mapping of the content of an external controlled terminology to the components of a message standard.

3.1.9 Relationship Type: The association between two Concepts. Examples: “HAS PROPERTIES”, “CONTAINS”, “INFERRED FROM”.

3.1.10 DICOM Content Mapping Resource (DCMR ): A Mapping Resource that defines Templates and Context Groups for use in DICOM IODs.

3.1.11 Template: A pattern that describes the Content Items, Value Types, Relationship Types and Value Sets that may be used in part of a Structured Report content tree, or in other Content Item constructs, such as Acquisition Context or Protocol Context. Analogous to a Module of an Information Object Definition.

3.1.12 Template ID (TID): Identifier of a Template.

3.1.13 Value Set: The allowed values of a Code Sequence Attribute in a given context. Specified either as one or more individual values or by reference to a Context Group.

3.1.14 Baseline Template Identifier (BTID): Identifier that specifies a template suggested to be used in the creation of a set of Content Items.

3.1.15 Defined Template Identifier (DTID): Identifier that specifies a template that shall be used in the creation of a set of Content Items.

3.1.16 Extensible Template: A template that may be extended by a particular application by inclusion of additional Content Items beyond those specified in the template.

3.1.17 Non-Extensible Template: A template that specifies the exact set of Content Items and corresponding Value Sets that shall be used and which shall not be extended by an application.

3.1.18 Coding schemes: Dictionaries (lexicons) of concepts (terms) with assigned codes and well defined meanings.

Note: Examples of coding schemes include SNOMED and LOINC .