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Goals:

  • Extract key content from DICOM SR (AI result, measurement report, etc.) into FHIR resources
  • Make mapping independent of final discussion around DiagnosticReport vs Composition 

Questions

Notes:

  • Observation UID is not in TIDs but in core DICOM attributes for SR content
    • See if there are more non-TID elements that should be included in the mapping
      • Tentatively no

Needed: SR IOD Equipment Module to Device Resource


TID 1410 Parameters

Container: EV (125007, DCM, "Measurement Group")
Concept NameVTVMDICOM SR Parameter/Value Set COnstraintDescription

EV (C67447, NCIt, "Activity Session")





DT (112039, DCM, "Tracking Identifier")



EV (112040, DCM, "Tracking Unique Identifier")



DTID 1419 “ROI Measurements”

$Measurement

Coded term or Context Group for Concept Name of measurement




$Units

Units for the measurement




$ModType

Modifier Name for Concept Name of measurement




$ModValue

Modifier Value for Concept Name of measurement




$Method

Value for Measurement Method




$Derivation

Value for Measurement Derivation




$TargetSite

Value for Anatomic Location of measurement




$TargetSiteMod

Modifier Value for Anatomic Location of measurement




$Equation

Coded term or Context Group for the equation or table from which the measurement was derived or computed




$RefAuthority

Bibliographic reference or authority for statistical properties of a reference population




$RangeAuthority

Bibliographic reference or authority for the normal range of the measurement




$DerivationParameter

Coded term or Context Group for Concept Name of a derivation parameter




$DerivationParameterUnits

Units of derivation parameter




$QualType

Evaluations encoded with code or text responses




$QualValue

Value of evaluations encoded with code responses




$QualModType

Modifier Name of evaluations encoded with code or text responses




$QualModValue

Modifier Value of evaluations encoded with code or text responses

EV (121071, DCM, "Finding")

$FindingType

Type of the finding




Draft SR Mapping to Observation

DICOM SR Content

Observation Name

FlagsCard.

Type



xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxIN
DomainResourceMeasurements and simple assertions


Σ0..*IdentifierBusiness Identifier for observation

Content Item: Observation UID (0040,A171)

... identifier:ObservationUID

Σ1..1
Unique Measurement Identifier

EV(112040,DCM,"Tracking Unique Identifier")

... identifier:TrackingUID

Σ0..1
Unique Tracking Identifier

EV(112039,DCM,"Tracking Identifier")

... identifier:TrackingID

Σ0..1
Human Readable Tracking identifier


... partOf:ImagingStudyRef)

Σ0..*

Reference(ImagingStudy)

Part of referenced event

set to "preliminary" for machine generated values not verified?!Σ1..1coderegistered | preliminary | final | amended +
ObservationStatus (Required)


 extracted from the attribute (121071,DCM,"Finding")Σ1..1CodeableConceptType of observation (code / type)
LOINC Codes (Example)



Σ0..1Reference(Patient)Who and/or what the observation is about


Σ0..1instantDate/Time this version was made available

Device UID of the AI Model

Σ0..*Reference(Practitioner | PractitionerRole | Organization | CareTeam | Patient | RelatedPerson)Who is responsible for the observation


ΣI0..1
Actual result

numeric value
.... valueQuantity


Quantity


coded element
.... valueCodeableConcept


CodeableConcept


text value
.... valueString


string


Time of the analysis
.... valueTime


time


date of analysis
.... valueDateTime


dateTime


Abnormality

Actionable Finding


0..*CodeableConceptHigh, low, normal, etc.
Observation Interpretation Codes (Extensible)


EV (363698007, SCT, "Finding Site")
0..1CodeableConceptObserved body part
SNOMED CT Body Structures (Example)


AI Inference procedure (code set)


0..1CodeableConceptHow it was done
Observation Methods (Example)


SR IOD Equipment Module to Device Resource



0..1Reference(Device | DeviceMetric)(Measurement) Device

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