CodeX Radiation Therapy, published by HL7 International / Cross-Group Projects. This guide is not an authorized publication; it is the continuous build for version 2.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/codex-radiation-therapy/ and changes regularly. See the Directory of published versions

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Extension: Radiobiologic Metric

Extension providing radiobiologic dose metric using a regular expression: BED, CGE, RBE, RBE(factor = <decimal>), EQD2Gy, EQD2Gy(a/b = <decimal>).

Context of Use

This extension may be used on the following element(s)

• Element ID: Procedure
• Element ID: ServiceRequest
• Element ID: ActivityDefinition
• Extension: Dose Planned to Volume
• Extension: Radiotherapy Dose Delivered To Volume Extension
• Extension: Dose Prescribed to Volume

Usage info

Usages:

• Use this Extension: Radiotherapy Course Prescription, Radiotherapy Course Summary, Radiotherapy Phase Prescription, Radiotherapy Plan Prescription... Show 6 more, Radiotherapy Planned Course, Radiotherapy Planned Phase, Radiotherapy Treated Fraction, Radiotherapy Treated Phase, Radiotherapy Treated Plan and Radiotherapy Treatment Plan
• Examples for this Extension: Procedure/RadiotherapyCourseSummary-XRTS-03-22B-01-Prostate-1P-3V

You can also check for usages in the FHIR IG Statistics

Formal Views of Extension Content

Description Differentials, Snapshots, and other representations.

• Differential Table
• Snapshot Table
• Statistics/References
• All

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension		0..*	Extension	Radiotherapy Biologically Effective Dose
extension		0..0		Extension
url		1..1	uri	"http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiobiologic-metric"
value[x]		1..1	Quantity	Value of extension
value		1..1	decimal	Numerical value (with implicit precision)
unit	C	1..1	string	Unit representation Constraints: TG263RadiobiologicMetric
Documentation for this format

Constraints

Id	Grade	Path(s)	Description	Expression
TG263RadiobiologicMetric	warning	Extension.value[x].unit	Unit SHOULD match TG-263 Radiobiologic Metric Regexp	$this.toString().matches('^(BED|CGE|RBE|RBE\\(factor\\s*=\\s*(\\d?(\\.\\d+)?)\\)|EQD2Gy|EQD2Gy\\(a\\/b\\s*=\\s*(\\d?(\\.\\d+)?)\\))$')

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension		0..*	Extension	Radiotherapy Biologically Effective Dose
id		0..1	string	Unique id for inter-element referencing
extension		0..0		Extension Slice: Unordered, Open by value:url
url		1..1	uri	"http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiobiologic-metric"
value[x]		1..1	Quantity	Value of extension
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	1..1	decimal	Numerical value (with implicit precision)
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	ΣC	1..1	string	Unit representation Constraints: TG263RadiobiologicMetric
system	ΣC	0..1	uri	System that defines coded unit form
code	Σ	0..1	code	Coded form of the unit
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Extension.value[x].comparator	Base	required	QuantityComparator	📍4.0.1	FHIR Std.

Constraints

Id	Grade	Path(s)	Description	Expression
TG263RadiobiologicMetric	warning	Extension.value[x].unit	Unit SHOULD match TG-263 Radiobiologic Metric Regexp	$this.toString().matches('^(BED|CGE|RBE|RBE\\(factor\\s*=\\s*(\\d?(\\.\\d+)?)\\)|EQD2Gy|EQD2Gy\\(a\\/b\\s*=\\s*(\\d?(\\.\\d+)?)\\))$')
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: Extension providing radiobiologic dose metric using a regular expression: BED, CGE, RBE, RBE(factor = <decimal>), EQD2Gy, EQD2Gy(a/b = <decimal>).

Differential ViewDifferential View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension		0..*	Extension	Radiotherapy Biologically Effective Dose
extension		0..0		Extension
url		1..1	uri	"http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiobiologic-metric"
value[x]		1..1	Quantity	Value of extension
value		1..1	decimal	Numerical value (with implicit precision)
unit	C	1..1	string	Unit representation Constraints: TG263RadiobiologicMetric
Documentation for this format

Constraints

Id	Grade	Path(s)	Description	Expression
TG263RadiobiologicMetric	warning	Extension.value[x].unit	Unit SHOULD match TG-263 Radiobiologic Metric Regexp	$this.toString().matches('^(BED|CGE|RBE|RBE\\(factor\\s*=\\s*(\\d?(\\.\\d+)?)\\)|EQD2Gy|EQD2Gy\\(a\\/b\\s*=\\s*(\\d?(\\.\\d+)?)\\))$')

Snapshot View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Extension		0..*	Extension	Radiotherapy Biologically Effective Dose
id		0..1	string	Unique id for inter-element referencing
extension		0..0		Extension Slice: Unordered, Open by value:url
url		1..1	uri	"http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiobiologic-metric"
value[x]		1..1	Quantity	Value of extension
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	1..1	decimal	Numerical value (with implicit precision)
comparator	?!Σ	0..1	code	< | <= | >= | > - how to understand the value Binding: QuantityComparator (required): How the Quantity should be understood and represented.
unit	ΣC	1..1	string	Unit representation Constraints: TG263RadiobiologicMetric
system	ΣC	0..1	uri	System that defines coded unit form
code	Σ	0..1	code	Coded form of the unit
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Extension.value[x].comparator	Base	required	QuantityComparator	📍4.0.1	FHIR Std.

Constraints

Id	Grade	Path(s)	Description	Expression
TG263RadiobiologicMetric	warning	Extension.value[x].unit	Unit SHOULD match TG-263 Radiobiologic Metric Regexp	$this.toString().matches('^(BED|CGE|RBE|RBE\\(factor\\s*=\\s*(\\d?(\\.\\d+)?)\\)|EQD2Gy|EQD2Gy\\(a\\/b\\s*=\\s*(\\d?(\\.\\d+)?)\\))$')
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: Extension providing radiobiologic dose metric using a regular expression: BED, CGE, RBE, RBE(factor = <decimal>), EQD2Gy, EQD2Gy(a/b = <decimal>).

Other representations of profile: CSV, Excel, Schematron