MII IG Kerndatensatz-Modul Bildgebung
2027.0.0-ballot.1 - Germany

This page is part of the MII Implementation Guide Bildgebung (v2027.0.0-ballot.1: Release) based on FHIR (HL7® FHIR® Standard) R4. This is the current published version. For a full list of available versions, see the Directory of published versions

Extension: MII_EX_ImagingStudy

Official URL: https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-serie-schichtdicke Version: 2027.0.0-ballot.1
Active as of 2026-09-15 Computable Name: MII_EX_Bildgebung_Schichtdicke

The extension allows specifying the slice thickness at the series level instead of the individual values at instance level.

Context of Use

This slice-thickness extension makes it possible to state the slice thickness of the individual instances of an image series at series level. It is primarily intended for cases where, for capacity reasons, the instance level of the ImagingStudy is not implemented. If the instance level is implemented, the slice thickness is to be filled at that level instead (see the instance-details extension). Note: since sliceThickness is an instance-level element according to the DICOM standard, filling it at series level requires ensuring that the slice thickness is constant across all instances of the series in question!

Relevant DICOM tags:

  • Slice thickness [(0018, 0050) SliceThickness] in [mm]

Examples

Note: For clarity, this example does not include all of the associated series and instances. In a real implementation, all series and instances belonging to the study are of course expected to be present in the resulting FHIR resource — the "series" or "instance" sequence is simply repeated for every series or instance and filled with the corresponding values.

Examples of ImagingStudy resources with the extension for the slice thickness of a series:

Example of an MRI scan: ImagingStudy-mii-exa-bildgebung-bildgebungsstudie-mr-series

Usage info

Usages:

You can also check for usages in the FHIR IG Statistics

Formal Views of Extension Content

Description of Profiles, Differentials, Snapshots, and their representations.

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension MII EX Bildgebung Schichtdicke
... extension 0..0 Extension
... url 1..1 uri "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-serie-schichtdicke"
... value[x] S 1..1 SimpleQuantity Value of extension
.... unit 0..1 string Unit representation
Required Pattern: millimeter
.... system 0..1 uri System that defines coded unit form
Required Pattern: http://unitsofmeasure.org
.... code 0..1 code Coded form of the unit
Required Pattern: mm

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension MII EX Bildgebung Schichtdicke
... id 0..1 string Unique id for inter-element referencing
... extension 0..0 Extension
Slice: Unordered, Open by value:url
... url 1..1 uri "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-serie-schichtdicke"
.... id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... value Σ 0..1 decimal Numerical value (with implicit precision)
.... unit Σ 0..1 string Unit representation
Required Pattern: millimeter
.... system ΣC 0..1 uri System that defines coded unit form
Required Pattern: http://unitsofmeasure.org
.... code Σ 0..1 code Coded form of the unit
Required Pattern: mm

doco Documentation for this format

Constraints

Id Grade Path(s) Description Expression
ele-1 error **ALL** elements All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1 error **ALL** extensions Must have either extensions or value[x], not both extension.exists() != value.exists()

Summary

Simple Extension with the type Quantity: Die Extension ermöglicht es, die Schichtdicke auf Serien-Ebene anzugeben, anstelle der individuellen Angabe auf Instanz-Ebene.

Differential ViewDifferential View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension MII EX Bildgebung Schichtdicke
... extension 0..0 Extension
... url 1..1 uri "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-serie-schichtdicke"
... value[x] S 1..1 SimpleQuantity Value of extension
.... unit 0..1 string Unit representation
Required Pattern: millimeter
.... system 0..1 uri System that defines coded unit form
Required Pattern: http://unitsofmeasure.org
.... code 0..1 code Coded form of the unit
Required Pattern: mm

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension MII EX Bildgebung Schichtdicke
... id 0..1 string Unique id for inter-element referencing
... extension 0..0 Extension
Slice: Unordered, Open by value:url
... url 1..1 uri "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-serie-schichtdicke"
.... id 0..1 string Unique id for inter-element referencing
.... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
.... value Σ 0..1 decimal Numerical value (with implicit precision)
.... unit Σ 0..1 string Unit representation
Required Pattern: millimeter
.... system ΣC 0..1 uri System that defines coded unit form
Required Pattern: http://unitsofmeasure.org
.... code Σ 0..1 code Coded form of the unit
Required Pattern: mm

doco Documentation for this format

Constraints

Id Grade Path(s) Description Expression
ele-1 error **ALL** elements All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1 error **ALL** extensions Must have either extensions or value[x], not both extension.exists() != value.exists()

Summary

Simple Extension with the type Quantity: Die Extension ermöglicht es, die Schichtdicke auf Serien-Ebene anzugeben, anstelle der individuellen Angabe auf Instanz-Ebene.

 

Other representations of profile: CSV, Excel, Schematron