The purpose of the |

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Space true t Reference set

descriptor| is to describe the format of all otherthat other

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Space true t reference sets

that may be included in a release. A Descriptor held within the |

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Space true t Reference set

Descriptor| describes the referencedComponentIdfield and the additional fields for theit the

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Space true t reference sets

it describes. Each field is described using ain a

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Space true t concept

in the metadata. The type of each field is also described in the same way.

Patterns allow a number of different types ofto of

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Space true t reference set

to be defined, each of which will conform to the specified pattern, having the sameformatsame

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Space true t release file

format. The file format of eachpattern each

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Space true t reference set

pattern is described by a Descriptor Template. This Descriptor Template describes the format and number of additional fields held against members ofconforming of

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Space true t reference sets

conforming to the pattern, and provides an envelope within which those additional fields may be further refined for eachconforming each

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Space true t reference set

conforming to the pattern. The Descriptor Template for each pattern is provided in the section describing that pattern.

Each definedthat defined

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Space true t reference set

that conforms to a pattern will have its own Descriptor, that describes its own specific properties, and althoughfield although

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Space true t reference set

field types must still conform to the Descriptor Template for the pattern, each field type may be further constrained using data sub-types specified in the metadata

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t hierarchy

. This provides some level ofto thethat of

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Space true t refinement

to the

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Space true t constraints

that may be applied to aconforming a

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Space true t reference set

conforming to a particular pattern.

Anchor
_68b93eb5-3fed-4f72-b3fa-b4488278db43__f _68b93eb5-3fed-4f72-b3fa-b4488278db43__f

Anchor
_68b93eb5-3fed-4f72-b3fa-b4488278db43__1 _68b93eb5-3fed-4f72-b3fa-b4488278db43__1

Figure 3. Graphical view of Relationships between patterns, reference sets, Descriptor Templates and Descriptors

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_5fd40e3d-bba3-4660-9353-a9d331fe373f _5fd40e3d-bba3-4660-9353-a9d331fe373f

Patterns and Use Cases

The next table summarizes the use cases for

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t reference sets

(one per row) that are described in the following sections, and shows whichpatterns which

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Space true t reference set

patterns are used in each case:

...

*

        

*

 

*

      

Inactivation indicator

*

        

CVT3 map

 

*

       

SNOMED RT map

 

*

          

*

        

*

         

*

    

Image annotation (field)

     

*

   

Short annotation (field)

     

*

   

Descriptive annotation (field)

     

*

   

reason for inactivation

      

*

  

RF1 Subset representation

   

*

   

*