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Overview

Revising the Anatomy Model to Improve Usability and Correctness. The Anatomy project comprises the following 6 sub-projects to improve quality for anatomy in SNOMED CT.

2016Project ScopeDeliverablesRelease
1

FMA alignment (differences only)

  1. Report of Semantic Findings
  2. Report on Hierarchical Relationships
  3. Final report of issues/solutions

1.2.&3 Completed 2016


 2.

SEP (Structure/Entire/Part) assignment

  1. Resolve ambiguity between structure and the entire concept by developing policy for naming convention and update existing content

1.Completed in Jan 2017 release - 9K descriptions inactivations and 3.6K new descriptions.

3.

Laterality assignment

  1. The development of Editorial guide for term convention and concept model for lateralized concepts.
  2. Laterality refset to support RF2 to RF conversion, MRCM rule specification, and lateralisation of content in situation, finding, procedure hierarchies for post-coordination of laterality. Laterality refset update for new content and rectification of issues from feedback as business as usual task from July 2017 and onwards

1. Completed, 2016

2. Completed, Jan 2017


2017Project ScopeDeliverablesRelease
1.FMA alignment (differences only)
  1. Draft of deliverables and resolution of final report by the follow-up phase of the project.
    1. Examine inconsistencies of meaning in identically named categories/groups.
  2. Remaining missing concepts to be added for completeness, mappings and modeling.

1. & 2. - On Hold, July 2017 Dependant on funding and resource. Deliverables are now on hold pending collaboration decision (IFAA and FMA).

Review the position after implementation of concept model in 2020.

2.SEP (Structure/Entire/Part) assignment
  1. Develop SEP refset to facilitate concept modeling and quality control;This refset would be the result of resolving ambiguity between structure and the entire concept by developing policy for assign preferred term and update existing content.
  2. Add new Entire concepts: 5,000 – for July 2017 release depends on funding and approaches.

1. Completed, July 2017

2. Completed, July 2017

3.Laterality assignment
  1. Development of inception and elaboration document for a comprehensive solution for supporting different use cases, in particular advanced implementation.
1.Completed, July 2017.
4.

Systematic naming

  1. Align descriptions with FMA and other international standards to develop consistent basenames for anatomy.

1.On Hold, July 2017 -evaluating approaches. Deliverables are now on hold pending collaboration decision (IFAA and FMA).

Review the position after implementation of concept model in 2020.


5.

IS-A and Part-of modeling

  1. Review and refine anatomy concept modeling for different part of relationships
  2. Analyse the maturity of anatomy concept model by subject areas. Preparation of documentation on anatomy concept model and examples. The development will form the base for beta release, testing and quality assurance.
  3. Update IS A relationship in production based on new concept model. The initial scope will be limited to skin structure and other subject are will be planned and will span several releases as the magnitude of changes runs in tens of thousands.

1.On Hold, TBD 2017 Deliverables are now on hold pending collaboration decision (IFAA and FMA).

Review the position after implementation of concept model in 2020.

2. In progress until 2020

3. Completed for skin structure, added 329 new "is a " realtionship "inactivated 136 redundant or incorrect "is a" relatioanship Jan, 2018.


6.

Sufficient definitions

  1. Review and refine anatomy concept model for sufficient definitions.
  2. Implementation of anatomy concept model into production of international release will have two key dependencies:
    1. Technical architect to support advanced description logic features. The logical profile needs to be supported by technical specification for release and tooling
    2. Content development dependency on detailed modeling for IS-A and Part-of.

1.On Hold, deliverable dependencies, modeling re-design approaches are being investigated-TBD -2017. Progress made on 2.B but continues to 2018, remainder transferred to 2018.


7.Tool Change
  1. Base line changes that can support DL features ( impacts Drugs and Anatomy), testing and evaluation. This features are needed this year and next in order to make substantial progress.
1.2017
2018Project ScopeDeliverablesRelease
4.Sufficient definitions
  1. Review and refine anatomy concept model for sufficient definitions.
  2. Implementation of anatomy concept model into production of international release will have two key dependencies:
    1. Technical architect to support advanced description logic features. The DL logical profile needs to be supported by technical specification for release and tooling.
    2. Content development dependency on detailed modeling for IS-A and Part-of.
  1. In progress until 2020

2. To be implemented in 2020

3.Part-of modeling
  1. Make 'part of' as defining attribute for Entire concepts and refine the part of relationships by region, constitution and system;
  2. Remove 'part of' relationships from Structure concepts;
  3. Remove the redundant inheritances. It will resolve the issues that technical team has to maintain part of relationship as a separate artefact. The refinement and alignment of part of relationships to other standards are out of scope. It needs consultation and documentation about solution and potential impact to implementation. This requires DL support and can not be implemented until such time.
  4. Analyse the maturity of anatomy concept model by subject areas. Preparation of documentation on anatomy concept model and examples. The development will form the base for beta release, testing and quality assurance.
  1. Completed - new attributes have been added and the attribute 'part of' has been replaced by 'proper part of'.
  2. Completed - all 'part of' relationships have been inactivated in the Jan 2019 release
  3. Completed - the task is no longer needed because all part of relationships have been inactivated.
  4. In progress until 2020
2.IS-A
  1. Update IS A relationship in production based on new concept model. The subject area will be planned and will span several releases because the magnitude of changes runs in tens of thousands and significant impact to other hierarchies. Yongsheng Gao to develop plan over releases, 2 resources for review.

1. Revision for musculoskeletal system have been completed and release in Jan 2019.

The rest body systems are planned in 2019 item 1.

1.Tool Changes
  1. There are dependencies on Tooling functionality which will require a considerable amount of time for DL changes as well as classification changes in order to proceed with required Anatomy changes.
  1. Completed - GCIs and property axioms have been implemented in the tooling.
5.Concept Model Implementation
  1. Resolve dependencies on the DL profile
  2. With FMA stalled and the standard not formalized, we need to ensure that our concept model follows the essential elements of good anatomy structure. Time will be spent evaluating clinical needs to enhance our model and not have the FMA as a constraint and we will look at alignment in future.
  1. Completed - DL profile enhancements are approved
  2. Concept model implementation is transferred to 2020 item 1
2019Project ScopeDeliverablesRelease
1IS A revision

Revision of IS A relationships by body systems for anatomy content based on the new concept model. Detail can be found at Progress of IS A revision

  1. Anatomy IS A relationship review - 2,400
  2. Update IS A relationships in PROD - 2,400
  3. Review and address impact to other hierarchies - 10,000 (medical knowledge and SNOMED CT knowledge)
  4. Develop Editorial Guide for Body Systems

2019 July,

2020 Jan

2Part of modelingAnalyse the maturity of anatomy concept model by subject areas. Preparation of documentation on anatomy concept model and examples. The development will form the base for beta release, testing and quality assurance. In progress until 2020
3Sufficient definitions

Review and refine anatomy concept model for sufficient definitions.

In progress until 2020
2020Project ScopeDeliverablesRelease
1Implementation of new concept model

The implementation of new anatomy concept model will involve a large number of changes. The plan is to deliver the changes over releases and require resources for review.

  1. Implement part of modeling
  2. Implement enhanced DL features in the model, e.g. sufficient definitions
2020 July





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