MII IG Befunde bildgebender Verfahren DE v2025

Extension Modalität CT

Die Extension CT (Computertomographie) ermöglicht das Erfassen relevanter DICOM-Tags, um Rückschlüsse über die Bildgewinnung ziehen zu können. Eine Besonderheit der Computertomographie ist die Verwendung von Röntgenstrahlen zur Erzeugung detaillierter Querschnittsbilder des Körpers. Diese Informationen über die Strahlungserzeugung, Strahlenbelastung und die technischen Parameter der Bildgebung liegen in den entsprechenden DICOM-Tags vor.

Relevante DICOM-Tags:

CTDIvol [(0018, 9345) CTDIVolume] in Milligray [mGy]
Röntgenröhrenspannung [(0018, 0060) KVP] in Kilovolt [kV]
Expositionszeit [(0018, 1150) exposureTime] in Millisekunden [ms]
Exposition [(0018, 1152) exposure] in Milliampere-Sekunden [mAs]
Röntgenröhrenstrom [(0018, 1151) xRayTubeCurrent] in Milliampere [mA]

Name	Status	Version	Canonical	Basis
MII_EX_Bildgebung_Modalitaet_CT	active	2025.0.0	https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-modalitaet-ct	http://hl7.org/fhir/StructureDefinition/Extension

Inhalt

MII_EX_Bildgebung_Modalitaet_CT (Extension)	I		Extension	There are no (further) constraints on this element Element id Extension Short description Optional Extensions Element Definition Optional Extension Element - found in all resources. Data type Extension Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
id		0..1	string	There are no (further) constraints on this element Element id Extension.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Extension.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
CTDIvol	I	0..1	Extension	There are no (further) constraints on this element Element id Extension.extension:CTDIvol Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
id		0..1	string	There are no (further) constraints on this element Element id Extension.extension:CTDIvol.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..0	Extension	There are no (further) constraints on this element Element id Extension.extension:CTDIvol.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
url		1..1	uriFixed Value	Element id Extension.extension:CTDIvol.url Short description identifies the meaning of the extension Definition Source of the definition for the extension code - a logical name or a URL. Comments The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension. Data type uri Fixed value CTDIvol Mappings rim: N/A
value[x]	I	0..1		Element id Extension.extension:CTDIvol.value[x] Short description A fixed quantity (no comparator) Definition The comparator is not used on a SimpleQuantity Comments The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` qty-3: If a code for the unit is present, the system SHALL also be present `code.empty() or system.exists()` sqty-1: The comparator is not used on a SimpleQuantity `comparator.empty()` Mappings rim: n/a rim: N/A v2: SN (see also Range) or CQ rim: PQ, IVL<PQ>, MO, CO, depending on the values
valueQuantity			SimpleQuantity	Data type SimpleQuantity
id		0..1	string	There are no (further) constraints on this element Element id Extension.extension:CTDIvol.value[x].id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Extension.extension:CTDIvol.value[x].extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
value	Σ	0..1	decimal	There are no (further) constraints on this element Element id Extension.extension:CTDIvol.value[x].value Short description Numerical value (with implicit precision) Definition The value of the measured amount. The value includes an implicit precision in the presentation of the value. Requirements Precision is handled implicitly in almost all cases of measurement. Comments The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books). Data type decimal Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: SN.2 / CQ - N/A rim: PQ.value, CO.value, MO.value, IVL.high or IVL.low depending on the value
comparator	Σ ?!	0..0	codeBinding	There are no (further) constraints on this element Element id Extension.extension:CTDIvol.value[x].comparator Short description < \| <= \| >= \| > - how to understand the value Definition Not allowed to be used in this context Requirements Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Meaning when missing If there is no comparator, then there is no modification of the value Data type code Binding How the Quantity should be understood and represented. QuantityComparator (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: SN.1 / CQ.1 rim: IVL properties
unit	Σ	0..1	stringPattern	Element id Extension.extension:CTDIvol.value[x].unit Short description Unit representation Definition A human-readable form of the unit. Requirements There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern milligray Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.unit
system	Σ I	0..1	uriPattern	Element id Extension.extension:CTDIvol.value[x].system Short description System that defines coded unit form Definition The identification of the system that provides the coded form of the unit. Requirements Need to know the system that defines the coded form of the unit. Comments see http://en.wikipedia.org/wiki/Uniform_resource_identifier Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern http://unitsofmeasure.org Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: CO.codeSystem, PQ.translation.codeSystem
code	Σ	0..1	codePattern	Element id Extension.extension:CTDIvol.value[x].code Short description Coded form of the unit Definition A computer processable form of the unit in some unit representation system. Requirements Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest. Comments The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system. Data type code Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern mGy Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.code, MO.currency, PQ.translation.code
KVP	I	0..1	Extension	There are no (further) constraints on this element Element id Extension.extension:KVP Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
id		0..1	string	There are no (further) constraints on this element Element id Extension.extension:KVP.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..0	Extension	There are no (further) constraints on this element Element id Extension.extension:KVP.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
url		1..1	uriFixed Value	Element id Extension.extension:KVP.url Short description identifies the meaning of the extension Definition Source of the definition for the extension code - a logical name or a URL. Comments The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension. Data type uri Fixed value KVP Mappings rim: N/A
value[x]	I	0..1		Element id Extension.extension:KVP.value[x] Short description A fixed quantity (no comparator) Definition The comparator is not used on a SimpleQuantity Comments The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` qty-3: If a code for the unit is present, the system SHALL also be present `code.empty() or system.exists()` sqty-1: The comparator is not used on a SimpleQuantity `comparator.empty()` Mappings rim: n/a rim: N/A v2: SN (see also Range) or CQ rim: PQ, IVL<PQ>, MO, CO, depending on the values
valueQuantity			SimpleQuantity	Data type SimpleQuantity
id		0..1	string	There are no (further) constraints on this element Element id Extension.extension:KVP.value[x].id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Extension.extension:KVP.value[x].extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
value	Σ	0..1	decimal	There are no (further) constraints on this element Element id Extension.extension:KVP.value[x].value Short description Numerical value (with implicit precision) Definition The value of the measured amount. The value includes an implicit precision in the presentation of the value. Requirements Precision is handled implicitly in almost all cases of measurement. Comments The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books). Data type decimal Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: SN.2 / CQ - N/A rim: PQ.value, CO.value, MO.value, IVL.high or IVL.low depending on the value
comparator	Σ ?!	0..0	codeBinding	There are no (further) constraints on this element Element id Extension.extension:KVP.value[x].comparator Short description < \| <= \| >= \| > - how to understand the value Definition Not allowed to be used in this context Requirements Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Meaning when missing If there is no comparator, then there is no modification of the value Data type code Binding How the Quantity should be understood and represented. QuantityComparator (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: SN.1 / CQ.1 rim: IVL properties
unit	Σ	0..1	stringPattern	Element id Extension.extension:KVP.value[x].unit Short description Unit representation Definition A human-readable form of the unit. Requirements There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern kilovolt Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.unit
system	Σ I	0..1	uriPattern	Element id Extension.extension:KVP.value[x].system Short description System that defines coded unit form Definition The identification of the system that provides the coded form of the unit. Requirements Need to know the system that defines the coded form of the unit. Comments see http://en.wikipedia.org/wiki/Uniform_resource_identifier Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern http://unitsofmeasure.org Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: CO.codeSystem, PQ.translation.codeSystem
code	Σ	0..1	codePattern	Element id Extension.extension:KVP.value[x].code Short description Coded form of the unit Definition A computer processable form of the unit in some unit representation system. Requirements Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest. Comments The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system. Data type code Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern kV Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.code, MO.currency, PQ.translation.code
exposureTime	I	0..1	Extension	There are no (further) constraints on this element Element id Extension.extension:exposureTime Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
id		0..1	string	There are no (further) constraints on this element Element id Extension.extension:exposureTime.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..0	Extension	There are no (further) constraints on this element Element id Extension.extension:exposureTime.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
url		1..1	uriFixed Value	Element id Extension.extension:exposureTime.url Short description identifies the meaning of the extension Definition Source of the definition for the extension code - a logical name or a URL. Comments The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension. Data type uri Fixed value exposureTime Mappings rim: N/A
value[x]	I	0..1		Element id Extension.extension:exposureTime.value[x] Short description A fixed quantity (no comparator) Definition The comparator is not used on a SimpleQuantity Comments The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` qty-3: If a code for the unit is present, the system SHALL also be present `code.empty() or system.exists()` sqty-1: The comparator is not used on a SimpleQuantity `comparator.empty()` Mappings rim: n/a rim: N/A v2: SN (see also Range) or CQ rim: PQ, IVL<PQ>, MO, CO, depending on the values
valueQuantity			SimpleQuantity	Data type SimpleQuantity
id		0..1	string	There are no (further) constraints on this element Element id Extension.extension:exposureTime.value[x].id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Extension.extension:exposureTime.value[x].extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
value	Σ	0..1	decimal	There are no (further) constraints on this element Element id Extension.extension:exposureTime.value[x].value Short description Numerical value (with implicit precision) Definition The value of the measured amount. The value includes an implicit precision in the presentation of the value. Requirements Precision is handled implicitly in almost all cases of measurement. Comments The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books). Data type decimal Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: SN.2 / CQ - N/A rim: PQ.value, CO.value, MO.value, IVL.high or IVL.low depending on the value
comparator	Σ ?!	0..0	codeBinding	There are no (further) constraints on this element Element id Extension.extension:exposureTime.value[x].comparator Short description < \| <= \| >= \| > - how to understand the value Definition Not allowed to be used in this context Requirements Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Meaning when missing If there is no comparator, then there is no modification of the value Data type code Binding How the Quantity should be understood and represented. QuantityComparator (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: SN.1 / CQ.1 rim: IVL properties
unit	Σ	0..1	stringPattern	Element id Extension.extension:exposureTime.value[x].unit Short description Unit representation Definition A human-readable form of the unit. Requirements There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern milliseconds Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.unit
system	Σ I	0..1	uriPattern	Element id Extension.extension:exposureTime.value[x].system Short description System that defines coded unit form Definition The identification of the system that provides the coded form of the unit. Requirements Need to know the system that defines the coded form of the unit. Comments see http://en.wikipedia.org/wiki/Uniform_resource_identifier Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern http://unitsofmeasure.org Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: CO.codeSystem, PQ.translation.codeSystem
code	Σ	0..1	codePattern	Element id Extension.extension:exposureTime.value[x].code Short description Coded form of the unit Definition A computer processable form of the unit in some unit representation system. Requirements Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest. Comments The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system. Data type code Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern ms Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.code, MO.currency, PQ.translation.code
exposure	I	0..1	Extension	There are no (further) constraints on this element Element id Extension.extension:exposure Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
id		0..1	string	There are no (further) constraints on this element Element id Extension.extension:exposure.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..0	Extension	There are no (further) constraints on this element Element id Extension.extension:exposure.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
url		1..1	uriFixed Value	Element id Extension.extension:exposure.url Short description identifies the meaning of the extension Definition Source of the definition for the extension code - a logical name or a URL. Comments The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension. Data type uri Fixed value exposure Mappings rim: N/A
value[x]	I	0..1		Element id Extension.extension:exposure.value[x] Short description A fixed quantity (no comparator) Definition The comparator is not used on a SimpleQuantity Comments The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` qty-3: If a code for the unit is present, the system SHALL also be present `code.empty() or system.exists()` sqty-1: The comparator is not used on a SimpleQuantity `comparator.empty()` Mappings rim: n/a rim: N/A v2: SN (see also Range) or CQ rim: PQ, IVL<PQ>, MO, CO, depending on the values
valueQuantity			SimpleQuantity	Data type SimpleQuantity
id		0..1	string	There are no (further) constraints on this element Element id Extension.extension:exposure.value[x].id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Extension.extension:exposure.value[x].extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
value	Σ	0..1	decimal	There are no (further) constraints on this element Element id Extension.extension:exposure.value[x].value Short description Numerical value (with implicit precision) Definition The value of the measured amount. The value includes an implicit precision in the presentation of the value. Requirements Precision is handled implicitly in almost all cases of measurement. Comments The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books). Data type decimal Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: SN.2 / CQ - N/A rim: PQ.value, CO.value, MO.value, IVL.high or IVL.low depending on the value
comparator	Σ ?!	0..0	codeBinding	There are no (further) constraints on this element Element id Extension.extension:exposure.value[x].comparator Short description < \| <= \| >= \| > - how to understand the value Definition Not allowed to be used in this context Requirements Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Meaning when missing If there is no comparator, then there is no modification of the value Data type code Binding How the Quantity should be understood and represented. QuantityComparator (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: SN.1 / CQ.1 rim: IVL properties
unit	Σ	0..1	stringPattern	Element id Extension.extension:exposure.value[x].unit Short description Unit representation Definition A human-readable form of the unit. Requirements There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern milliampere second Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.unit
system	Σ I	0..1	uriPattern	Element id Extension.extension:exposure.value[x].system Short description System that defines coded unit form Definition The identification of the system that provides the coded form of the unit. Requirements Need to know the system that defines the coded form of the unit. Comments see http://en.wikipedia.org/wiki/Uniform_resource_identifier Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern http://unitsofmeasure.org Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: CO.codeSystem, PQ.translation.codeSystem
code	Σ	0..1	codePattern	Element id Extension.extension:exposure.value[x].code Short description Coded form of the unit Definition A computer processable form of the unit in some unit representation system. Requirements Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest. Comments The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system. Data type code Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern mA.s Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.code, MO.currency, PQ.translation.code
xRayTubeCurrent	I	0..1	Extension	There are no (further) constraints on this element Element id Extension.extension:xRayTubeCurrent Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
id		0..1	string	There are no (further) constraints on this element Element id Extension.extension:xRayTubeCurrent.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..0	Extension	There are no (further) constraints on this element Element id Extension.extension:xRayTubeCurrent.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
url		1..1	uriFixed Value	Element id Extension.extension:xRayTubeCurrent.url Short description identifies the meaning of the extension Definition Source of the definition for the extension code - a logical name or a URL. Comments The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension. Data type uri Fixed value xRayTubeCurrent Mappings rim: N/A
value[x]	I	0..1		Element id Extension.extension:xRayTubeCurrent.value[x] Short description A fixed quantity (no comparator) Definition The comparator is not used on a SimpleQuantity Comments The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` qty-3: If a code for the unit is present, the system SHALL also be present `code.empty() or system.exists()` sqty-1: The comparator is not used on a SimpleQuantity `comparator.empty()` Mappings rim: n/a rim: N/A v2: SN (see also Range) or CQ rim: PQ, IVL<PQ>, MO, CO, depending on the values
valueQuantity			SimpleQuantity	Data type SimpleQuantity
id		0..1	string	There are no (further) constraints on this element Element id Extension.extension:xRayTubeCurrent.value[x].id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Extension.extension:xRayTubeCurrent.value[x].extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
value	Σ	0..1	decimal	There are no (further) constraints on this element Element id Extension.extension:xRayTubeCurrent.value[x].value Short description Numerical value (with implicit precision) Definition The value of the measured amount. The value includes an implicit precision in the presentation of the value. Requirements Precision is handled implicitly in almost all cases of measurement. Comments The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books). Data type decimal Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: SN.2 / CQ - N/A rim: PQ.value, CO.value, MO.value, IVL.high or IVL.low depending on the value
comparator	Σ ?!	0..0	codeBinding	There are no (further) constraints on this element Element id Extension.extension:xRayTubeCurrent.value[x].comparator Short description < \| <= \| >= \| > - how to understand the value Definition Not allowed to be used in this context Requirements Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Meaning when missing If there is no comparator, then there is no modification of the value Data type code Binding How the Quantity should be understood and represented. QuantityComparator (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: SN.1 / CQ.1 rim: IVL properties
unit	Σ	0..1	stringPattern	Element id Extension.extension:xRayTubeCurrent.value[x].unit Short description Unit representation Definition A human-readable form of the unit. Requirements There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern milliampere Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.unit
system	Σ I	0..1	uriPattern	Element id Extension.extension:xRayTubeCurrent.value[x].system Short description System that defines coded unit form Definition The identification of the system that provides the coded form of the unit. Requirements Need to know the system that defines the coded form of the unit. Comments see http://en.wikipedia.org/wiki/Uniform_resource_identifier Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern http://unitsofmeasure.org Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: CO.codeSystem, PQ.translation.codeSystem
code	Σ	0..1	codePattern	Element id Extension.extension:xRayTubeCurrent.value[x].code Short description Coded form of the unit Definition A computer processable form of the unit in some unit representation system. Requirements Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest. Comments The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system. Data type code Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern mA Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.code, MO.currency, PQ.translation.code
url		1..1	uriFixed Value	Element id Extension.url Short description identifies the meaning of the extension Definition Source of the definition for the extension code - a logical name or a URL. Comments The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension. Data type uri Fixed value https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-modalitaet-ct Mappings rim: N/A
value[x]		0..0		There are no (further) constraints on this element Element id Extension.value[x] Short description Value of extension Definition Value of extension - must be one of a constrained set of the data types (see Extensibility for a list). Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A

Die Extension ermöglicht es die Ressourcen und Machbarkeitsanalysen auf CT Daten zu erweitern.

<StructureDefinition xmlns="http://hl7.org/fhir">
    <id value="mii-ex-bildgebung-modalitaet-ct" />
    <extension url="https://www.medizininformatik-initiative.de/fhir/modul-meta/StructureDefinition/mii-ex-meta-license-codeable">
        <valueCodeableConcept>
            <coding>
                <system value="http://hl7.org/fhir/spdx-license" />
                <code value="CC-BY-4.0" />
                <display value="Creative Commons Attribution 4.0 International" />
            </coding>
        </valueCodeableConcept>
    </extension>
    <url value="https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-modalitaet-ct" />
    <version value="2025.0.0" />
    <name value="MII_EX_Bildgebung_Modalitaet_CT">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
            <extension url="lang">
                <valueCode value="en-US" />
            </extension>
            <extension url="content">
                <valueString value="MII_EX_Imaging_Modality_CT" />
            </extension>
        </extension>
    </name>
    <title value="MII EX Bildgebung Modalit&#228;t CT">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
            <extension url="lang">
                <valueCode value="en-US" />
            </extension>
            <extension url="content">
                <valueString value="MII EX Imaging Modality CT" />
            </extension>
        </extension>
    </title>
    <status value="active" />
    <experimental value="false" />
    <publisher value="Medizininformatik Initiative" />
    <contact>
        <telecom>
            <system value="url" />
            <value value="https://www.medizininformatik-initiative.de" />
        </telecom>
    </contact>
    <description value="Die Extension erm&#246;glicht es die Ressourcen und Machbarkeitsanalysen auf CT Daten zu erweitern.">
        <extension url="http://hl7.org/fhir/StructureDefinition/translation">
            <extension url="lang">
                <valueCode value="en-US" />
            </extension>
            <extension url="content">
                <valueString value="The extension allows to extend the resources and feasibility analysis to CT data." />
            </extension>
        </extension>
    </description>
    <fhirVersion value="4.0.1" />
    <kind value="complex-type" />
    <abstract value="false" />
    <context>
        <type value="element" />
        <expression value="ImagingStudy.series" />
    </context>
    <type value="Extension" />
    <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
    <derivation value="constraint" />
    <differential>
        <element id="Extension.extension:CTDIvol">
            <path value="Extension.extension" />
            <sliceName value="CTDIvol" />
            <min value="0" />
            <max value="1" />
        </element>
        <element id="Extension.extension:CTDIvol.extension">
            <path value="Extension.extension.extension" />
            <max value="0" />
        </element>
        <element id="Extension.extension:CTDIvol.url">
            <path value="Extension.extension.url" />
            <fixedUri value="CTDIvol" />
        </element>
        <element id="Extension.extension:CTDIvol.value[x]">
            <path value="Extension.extension.value[x]" />
            <type>
                <code value="Quantity" />
                <profile value="http://hl7.org/fhir/StructureDefinition/SimpleQuantity" />
            </type>
        </element>
        <element id="Extension.extension:CTDIvol.value[x].unit">
            <path value="Extension.extension.value[x].unit" />
            <patternString value="milligray" />
        </element>
        <element id="Extension.extension:CTDIvol.value[x].system">
            <path value="Extension.extension.value[x].system" />
            <patternUri value="http://unitsofmeasure.org" />
        </element>
        <element id="Extension.extension:CTDIvol.value[x].code">
            <path value="Extension.extension.value[x].code" />
            <patternCode value="mGy" />
        </element>
        <element id="Extension.extension:KVP">
            <path value="Extension.extension" />
            <sliceName value="KVP" />
            <min value="0" />
            <max value="1" />
        </element>
        <element id="Extension.extension:KVP.extension">
            <path value="Extension.extension.extension" />
            <max value="0" />
        </element>
        <element id="Extension.extension:KVP.url">
            <path value="Extension.extension.url" />
            <fixedUri value="KVP" />
        </element>
        <element id="Extension.extension:KVP.value[x]">
            <path value="Extension.extension.value[x]" />
            <type>
                <code value="Quantity" />
                <profile value="http://hl7.org/fhir/StructureDefinition/SimpleQuantity" />
            </type>
        </element>
        <element id="Extension.extension:KVP.value[x].unit">
            <path value="Extension.extension.value[x].unit" />
            <patternString value="kilovolt" />
        </element>
        <element id="Extension.extension:KVP.value[x].system">
            <path value="Extension.extension.value[x].system" />
            <patternUri value="http://unitsofmeasure.org" />
        </element>
        <element id="Extension.extension:KVP.value[x].code">
            <path value="Extension.extension.value[x].code" />
            <patternCode value="kV" />
        </element>
        <element id="Extension.extension:exposureTime">
            <path value="Extension.extension" />
            <sliceName value="exposureTime" />
            <min value="0" />
            <max value="1" />
        </element>
        <element id="Extension.extension:exposureTime.extension">
            <path value="Extension.extension.extension" />
            <max value="0" />
        </element>
        <element id="Extension.extension:exposureTime.url">
            <path value="Extension.extension.url" />
            <fixedUri value="exposureTime" />
        </element>
        <element id="Extension.extension:exposureTime.value[x]">
            <path value="Extension.extension.value[x]" />
            <type>
                <code value="Quantity" />
                <profile value="http://hl7.org/fhir/StructureDefinition/SimpleQuantity" />
            </type>
        </element>
        <element id="Extension.extension:exposureTime.value[x].unit">
            <path value="Extension.extension.value[x].unit" />
            <patternString value="milliseconds" />
        </element>
        <element id="Extension.extension:exposureTime.value[x].system">
            <path value="Extension.extension.value[x].system" />
            <patternUri value="http://unitsofmeasure.org" />
        </element>
        <element id="Extension.extension:exposureTime.value[x].code">
            <path value="Extension.extension.value[x].code" />
            <patternCode value="ms" />
        </element>
        <element id="Extension.extension:exposure">
            <path value="Extension.extension" />
            <sliceName value="exposure" />
            <min value="0" />
            <max value="1" />
        </element>
        <element id="Extension.extension:exposure.extension">
            <path value="Extension.extension.extension" />
            <max value="0" />
        </element>
        <element id="Extension.extension:exposure.url">
            <path value="Extension.extension.url" />
            <fixedUri value="exposure" />
        </element>
        <element id="Extension.extension:exposure.value[x]">
            <path value="Extension.extension.value[x]" />
            <type>
                <code value="Quantity" />
                <profile value="http://hl7.org/fhir/StructureDefinition/SimpleQuantity" />
            </type>
        </element>
        <element id="Extension.extension:exposure.value[x].unit">
            <path value="Extension.extension.value[x].unit" />
            <patternString value="milliampere second" />
        </element>
        <element id="Extension.extension:exposure.value[x].system">
            <path value="Extension.extension.value[x].system" />
            <patternUri value="http://unitsofmeasure.org" />
        </element>
        <element id="Extension.extension:exposure.value[x].code">
            <path value="Extension.extension.value[x].code" />
            <patternCode value="mA.s" />
        </element>
        <element id="Extension.extension:xRayTubeCurrent">
            <path value="Extension.extension" />
            <sliceName value="xRayTubeCurrent" />
            <min value="0" />
            <max value="1" />
        </element>
        <element id="Extension.extension:xRayTubeCurrent.extension">
            <path value="Extension.extension.extension" />
            <max value="0" />
        </element>
        <element id="Extension.extension:xRayTubeCurrent.url">
            <path value="Extension.extension.url" />
            <fixedUri value="xRayTubeCurrent" />
        </element>
        <element id="Extension.extension:xRayTubeCurrent.value[x]">
            <path value="Extension.extension.value[x]" />
            <type>
                <code value="Quantity" />
                <profile value="http://hl7.org/fhir/StructureDefinition/SimpleQuantity" />
            </type>
        </element>
        <element id="Extension.extension:xRayTubeCurrent.value[x].unit">
            <path value="Extension.extension.value[x].unit" />
            <patternString value="milliampere" />
        </element>
        <element id="Extension.extension:xRayTubeCurrent.value[x].system">
            <path value="Extension.extension.value[x].system" />
            <patternUri value="http://unitsofmeasure.org" />
        </element>
        <element id="Extension.extension:xRayTubeCurrent.value[x].code">
            <path value="Extension.extension.value[x].code" />
            <patternCode value="mA" />
        </element>
        <element id="Extension.url">
            <path value="Extension.url" />
            <fixedUri value="https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-modalitaet-ct" />
        </element>
        <element id="Extension.value[x]">
            <path value="Extension.value[x]" />
            <max value="0" />
        </element>
    </differential>
</StructureDefinition>

{
    "resourceType": "StructureDefinition",
    "id": "mii-ex-bildgebung-modalitaet-ct",
    "extension":  [
        {
            "url": "https://www.medizininformatik-initiative.de/fhir/modul-meta/StructureDefinition/mii-ex-meta-license-codeable",
            "valueCodeableConcept": {
                "coding":  [
                    {
                        "code": "CC-BY-4.0",
                        "system": "http://hl7.org/fhir/spdx-license",
                        "display": "Creative Commons Attribution 4.0 International"
                    }
                ]
            }
        }
    ],
    "url": "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-modalitaet-ct",
    "version": "2025.0.0",
    "name": "MII_EX_Bildgebung_Modalitaet_CT",
    "_name": {
        "extension":  [
            {
                "url": "http://hl7.org/fhir/StructureDefinition/translation",
                "extension":  [
                    {
                        "url": "lang",
                        "valueCode": "en-US"
                    },
                    {
                        "url": "content",
                        "valueString": "MII_EX_Imaging_Modality_CT"
                    }
                ]
            }
        ]
    },
    "title": "MII EX Bildgebung Modalität CT",
    "_title": {
        "extension":  [
            {
                "url": "http://hl7.org/fhir/StructureDefinition/translation",
                "extension":  [
                    {
                        "url": "lang",
                        "valueCode": "en-US"
                    },
                    {
                        "url": "content",
                        "valueString": "MII EX Imaging Modality CT"
                    }
                ]
            }
        ]
    },
    "status": "active",
    "experimental": false,
    "publisher": "Medizininformatik Initiative",
    "contact":  [
        {
            "telecom":  [
                {
                    "system": "url",
                    "value": "https://www.medizininformatik-initiative.de"
                }
            ]
        }
    ],
    "description": "Die Extension ermöglicht es die Ressourcen und Machbarkeitsanalysen auf CT Daten zu erweitern.",
    "_description": {
        "extension":  [
            {
                "url": "http://hl7.org/fhir/StructureDefinition/translation",
                "extension":  [
                    {
                        "url": "lang",
                        "valueCode": "en-US"
                    },
                    {
                        "url": "content",
                        "valueString": "The extension allows to extend the resources and feasibility analysis to CT data."
                    }
                ]
            }
        ]
    },
    "fhirVersion": "4.0.1",
    "kind": "complex-type",
    "abstract": false,
    "context":  [
        {
            "type": "element",
            "expression": "ImagingStudy.series"
        }
    ],
    "type": "Extension",
    "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
    "derivation": "constraint",
    "differential": {
        "element":  [
            {
                "id": "Extension.extension:CTDIvol",
                "path": "Extension.extension",
                "sliceName": "CTDIvol",
                "min": 0,
                "max": "1"
            },
            {
                "id": "Extension.extension:CTDIvol.extension",
                "path": "Extension.extension.extension",
                "max": "0"
            },
            {
                "id": "Extension.extension:CTDIvol.url",
                "path": "Extension.extension.url",
                "fixedUri": "CTDIvol"
            },
            {
                "id": "Extension.extension:CTDIvol.value[x]",
                "path": "Extension.extension.value[x]",
                "type":  [
                    {
                        "code": "Quantity",
                        "profile":  [
                            "http://hl7.org/fhir/StructureDefinition/SimpleQuantity"
                        ]
                    }
                ]
            },
            {
                "id": "Extension.extension:CTDIvol.value[x].unit",
                "path": "Extension.extension.value[x].unit",
                "patternString": "milligray"
            },
            {
                "id": "Extension.extension:CTDIvol.value[x].system",
                "path": "Extension.extension.value[x].system",
                "patternUri": "http://unitsofmeasure.org"
            },
            {
                "id": "Extension.extension:CTDIvol.value[x].code",
                "path": "Extension.extension.value[x].code",
                "patternCode": "mGy"
            },
            {
                "id": "Extension.extension:KVP",
                "path": "Extension.extension",
                "sliceName": "KVP",
                "min": 0,
                "max": "1"
            },
            {
                "id": "Extension.extension:KVP.extension",
                "path": "Extension.extension.extension",
                "max": "0"
            },
            {
                "id": "Extension.extension:KVP.url",
                "path": "Extension.extension.url",
                "fixedUri": "KVP"
            },
            {
                "id": "Extension.extension:KVP.value[x]",
                "path": "Extension.extension.value[x]",
                "type":  [
                    {
                        "code": "Quantity",
                        "profile":  [
                            "http://hl7.org/fhir/StructureDefinition/SimpleQuantity"
                        ]
                    }
                ]
            },
            {
                "id": "Extension.extension:KVP.value[x].unit",
                "path": "Extension.extension.value[x].unit",
                "patternString": "kilovolt"
            },
            {
                "id": "Extension.extension:KVP.value[x].system",
                "path": "Extension.extension.value[x].system",
                "patternUri": "http://unitsofmeasure.org"
            },
            {
                "id": "Extension.extension:KVP.value[x].code",
                "path": "Extension.extension.value[x].code",
                "patternCode": "kV"
            },
            {
                "id": "Extension.extension:exposureTime",
                "path": "Extension.extension",
                "sliceName": "exposureTime",
                "min": 0,
                "max": "1"
            },
            {
                "id": "Extension.extension:exposureTime.extension",
                "path": "Extension.extension.extension",
                "max": "0"
            },
            {
                "id": "Extension.extension:exposureTime.url",
                "path": "Extension.extension.url",
                "fixedUri": "exposureTime"
            },
            {
                "id": "Extension.extension:exposureTime.value[x]",
                "path": "Extension.extension.value[x]",
                "type":  [
                    {
                        "code": "Quantity",
                        "profile":  [
                            "http://hl7.org/fhir/StructureDefinition/SimpleQuantity"
                        ]
                    }
                ]
            },
            {
                "id": "Extension.extension:exposureTime.value[x].unit",
                "path": "Extension.extension.value[x].unit",
                "patternString": "milliseconds"
            },
            {
                "id": "Extension.extension:exposureTime.value[x].system",
                "path": "Extension.extension.value[x].system",
                "patternUri": "http://unitsofmeasure.org"
            },
            {
                "id": "Extension.extension:exposureTime.value[x].code",
                "path": "Extension.extension.value[x].code",
                "patternCode": "ms"
            },
            {
                "id": "Extension.extension:exposure",
                "path": "Extension.extension",
                "sliceName": "exposure",
                "min": 0,
                "max": "1"
            },
            {
                "id": "Extension.extension:exposure.extension",
                "path": "Extension.extension.extension",
                "max": "0"
            },
            {
                "id": "Extension.extension:exposure.url",
                "path": "Extension.extension.url",
                "fixedUri": "exposure"
            },
            {
                "id": "Extension.extension:exposure.value[x]",
                "path": "Extension.extension.value[x]",
                "type":  [
                    {
                        "code": "Quantity",
                        "profile":  [
                            "http://hl7.org/fhir/StructureDefinition/SimpleQuantity"
                        ]
                    }
                ]
            },
            {
                "id": "Extension.extension:exposure.value[x].unit",
                "path": "Extension.extension.value[x].unit",
                "patternString": "milliampere second"
            },
            {
                "id": "Extension.extension:exposure.value[x].system",
                "path": "Extension.extension.value[x].system",
                "patternUri": "http://unitsofmeasure.org"
            },
            {
                "id": "Extension.extension:exposure.value[x].code",
                "path": "Extension.extension.value[x].code",
                "patternCode": "mA.s"
            },
            {
                "id": "Extension.extension:xRayTubeCurrent",
                "path": "Extension.extension",
                "sliceName": "xRayTubeCurrent",
                "min": 0,
                "max": "1"
            },
            {
                "id": "Extension.extension:xRayTubeCurrent.extension",
                "path": "Extension.extension.extension",
                "max": "0"
            },
            {
                "id": "Extension.extension:xRayTubeCurrent.url",
                "path": "Extension.extension.url",
                "fixedUri": "xRayTubeCurrent"
            },
            {
                "id": "Extension.extension:xRayTubeCurrent.value[x]",
                "path": "Extension.extension.value[x]",
                "type":  [
                    {
                        "code": "Quantity",
                        "profile":  [
                            "http://hl7.org/fhir/StructureDefinition/SimpleQuantity"
                        ]
                    }
                ]
            },
            {
                "id": "Extension.extension:xRayTubeCurrent.value[x].unit",
                "path": "Extension.extension.value[x].unit",
                "patternString": "milliampere"
            },
            {
                "id": "Extension.extension:xRayTubeCurrent.value[x].system",
                "path": "Extension.extension.value[x].system",
                "patternUri": "http://unitsofmeasure.org"
            },
            {
                "id": "Extension.extension:xRayTubeCurrent.value[x].code",
                "path": "Extension.extension.value[x].code",
                "patternCode": "mA"
            },
            {
                "id": "Extension.url",
                "path": "Extension.url",
                "fixedUri": "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-modalitaet-ct"
            },
            {
                "id": "Extension.value[x]",
                "path": "Extension.value[x]",
                "max": "0"
            }
        ]
    }
}

MII EX Bildgebung Modalität CT

Beispiele

Hinweis
	Aus Gründen der Übersichtlichkeit wurde in diesem Beispiel darauf verzichtet, alle dazugehörigen Serien bzw. Instanzen mit einzubinden. Natürlich ist es bei der Implementierung vorgesehen, dass alle zur jeweiligen Studie gehörenden Serien und Instanzen auch in der resultierenden FHIR-Ressource enthalten sind - dafür wird dann einfach die Sequenz "series" bzw "instance" für jede Serie bzw. Instanz wiederholt und mit den entsprechenden Werten befüllt.

Hinweis

Aus Gründen der Übersichtlichkeit wurde in diesem Beispiel darauf verzichtet, alle dazugehörigen Serien bzw. Instanzen mit einzubinden. Natürlich ist es bei der Implementierung vorgesehen, dass alle zur jeweiligen Studie gehörenden Serien und Instanzen auch in der resultierenden FHIR-Ressource enthalten sind - dafür wird dann einfach die Sequenz "series" bzw "instance" für jede Serie bzw. Instanz wiederholt und mit den entsprechenden Werten befüllt.

Beispiel einer ImagingStudy-Ressource mit der Extension für CT Metadaten inkl. der modalitätsunabhängigen Extensions für Kontrastmittel, Instanzdetails und Gerätehersteller:

{
    "resourceType": "ImagingStudy",
    "id": "mii-exa-bildgebung-bildgebungsstudie-ct",
    "meta": {
        "profile":  [
            "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-pr-bildgebung-bildgebungsstudie"
        ]
    },
    "extension":  [
        {
            "url": "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-bildgebungsgrund",
            "valueString": "Verdacht auf Karzinom"
        }
    ],
    "series":  [
        {
            "extension":  [
                {
                    "extension":  [
                        {
                            "valueQuantity": {
                                "unit": "milligray",
                                "value": 4.04
                            },
                            "url": "CTDIvol"
                        },
                        {
                            "valueQuantity": {
                                "unit": "kilovolt",
                                "value": 110
                            },
                            "url": "KVP"
                        },
                        {
                            "valueQuantity": {
                                "unit": "milliampere second",
                                "value": 38
                            },
                            "url": "exposure"
                        },
                        {
                            "valueQuantity": {
                                "unit": "milliseconds",
                                "value": 600
                            },
                            "url": "exposureTime"
                        },
                        {
                            "valueQuantity": {
                                "unit": "milliampere",
                                "value": 96
                            },
                            "url": "xRayTubeCurrent"
                        }
                    ],
                    "url": "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-modalitaet-ct"
                },
                {
                    "extension":  [
                        {
                            "url": "contrastBolus",
                            "valueBoolean": true
                        },
                        {
                            "url": "contrastBolusDetails",
                            "valueReference": {
                                "reference": "MedicationAdministration/mii-exa-bildgebung-kontrastmittelgabe"
                            }
                        }
                    ],
                    "url": "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-kontrastmittel"
                }
            ],
            "instance":  [
                {
                    "extension":  [
                        {
                            "extension":  [
                                {
                                    "valueQuantity": {
                                        "unit": "millimeter",
                                        "value": 1.36
                                    },
                                    "url": "pixelSpacingX"
                                },
                                {
                                    "valueQuantity": {
                                        "unit": "millimeter",
                                        "value": 1.36
                                    },
                                    "url": "pixelSpacingY"
                                },
                                {
                                    "valueQuantity": {
                                        "unit": "millimeter",
                                        "value": 4
                                    },
                                    "url": "sliceThickness"
                                },
                                {
                                    "url": "imageType",
                                    "valueCodeableConcept": {
                                        "coding":  [
                                            {
                                                "code": "DERIVED",
                                                "system": "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/CodeSystem/mii-cs-bildgebung-instance-image-type"
                                            },
                                            {
                                                "code": "PRIMARY",
                                                "system": "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/CodeSystem/mii-cs-bildgebung-instance-image-type"
                                            },
                                            {
                                                "code": "AXIAL",
                                                "system": "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/CodeSystem/mii-cs-bildgebung-instance-image-type"
                                            }
                                        ]
                                    }
                                }
                            ],
                            "url": "https://www.medizininformatik-initiative.de/fhir/ext/modul-bildgebung/StructureDefinition/mii-ex-bildgebung-instanz-details"
                        }
                    ],
                    "uid": "instance-example-uid",
                    "sopClass": {
                        "code": "urn:oid:1.2.840.10008.5.1.4.1.1.2",
                        "system": "urn:ietf:rfc:3986"
                    },
                    "number": 31
                }
            ],
            "performer":  [
                {
                    "actor": {
                        "reference": "Device/mii-exa-bildgebung-geraet"
                    }
                }
            ],
            "uid": "series-example-uid",
            "number": 1,
            "modality": {
                "code": "CT",
                "system": "http://dicom.nema.org/resources/ontology/DCM",
                "display": "Computed Tomography"
            },
            "description": "AC LD CT Whole Body 4.0 HD Field of View",
            "numberOfInstances": 195,
            "bodySite": {
                "code": "51185008",
                "system": "http://snomed.info/sct",
                "display": "Thoracic structure (body structure)"
            },
            "laterality": {
                "code": "7771000",
                "system": "http://snomed.info/sct",
                "display": "Left"
            },
            "started": "2024-07-19T12:03:30+02:00"
        }
    ],
    "status": "available",
    "modality":  [
        {
            "code": "CT",
            "system": "http://dicom.nema.org/resources/ontology/DCM",
            "display": "Computed Tomography"
        }
    ],
    "subject": {
        "reference": "Patient/PatExample",
        "identifier": {
            "type": {
                "coding":  [
                    {
                        "code": "MR",
                        "system": "http://terminology.hl7.org/CodeSystem/v2-0203",
                        "display": "Medical record number"
                    }
                ]
            },
            "system": "https://system-url",
            "value": "study-uid"
        }
    },
    "encounter": {
        "reference": "Encounter/EncExample"
    },
    "basedOn":  [
        {
            "reference": "ServiceRequest/mii-exa-bildgebung-anforderung-bildgebung"
        }
    ],
    "numberOfSeries": 2,
    "numberOfInstances": 390,
    "procedureReference": {
        "reference": "Procedure/mii-exa-bildgebung-bildgebungsprozedur"
    },
    "reasonReference":  [
        {
            "reference": "Condition/CondExample"
        }
    ],
    "description": "whole body aquisition"
}