digitaltwins-on-fhir 1.2.2

An adapter for transfer DigitalTWIN Clinic Description to FHIR

Digitaltwins on FHIR

Usage

• Setup and connect to FHIR server

from digitaltwins_on_fhir.core import Adapter

adapter = Adapter("http://localhost:8080/fhir/")

Load data to FHIR server

Primary measurements

• Load FHIR bundle

 await adapter.loader().load_fhir_bundle('./dataset/dataset-fhir-bundles')

• Load DigitalTWIN Clinical Description (primary measurements)

measurements = adapter.loader().load_sparc_dataset_primary_measurements()
with open('./dataset/measurements.json', 'r') as file:
    data = json.load(file)

await measurements.add_measurements_description(data).generate_resources()

• Add Practitioner (researcher) to FHIR server

from digitaltwins_on_fhir.core.resource import Identifier, Code, HumanName, Practitioner

await measurements.add_practitioner(researcher=Practitioner(
  active=True,
  identifier=[
    Identifier(use=Code("official"), system="sparc.org",
               value='sparc-d557ac68-f365-0718-c945-8722ec')],
  name=[HumanName(use="usual", text="Xiaoming Li", family="Li", given=["Xiaoming"])],
  gender="male"
))

Workflow

Search

References in Task (workflow tool process) resource

• owner: Patient reference
• for: PlanDefinition (workflow) reference
• focus: ActivityDefinition (workflow tool) reference
• basedOn: ResearchSubject reference
• requester (Optional): Practitioner (researcher) reference
• references in input
  • ImagingStudy
  • Observation
• references in output
  • Observation

Example

• Find a specific workflow process
  • If known: patient, dataset, workflow tool and workflow uuids

client = adapter.async_client

# Step 1: find the patient
patient = await client.resources("Patient").search(
                                    identifier="patient-xxxx").first()
# Step 2: find the dataset
dataset = await client.resources("ResearchStudy").search(
                                    identifier="dataset-xxxx").first()
# Step 3: find the workflow tool
workflow_tool = await client.resources("ActivityDefinition").search(
                                    identifier="workflow-tool-xxxx").first()
# Step 4: find the research subject
research_subject = await client.resources("ResearchSubject").search(
                                    patient=patient.to_reference().reference,
                                    study=dataset.to_reference().reference).first()
# Step 5: find workflow
workflow = await client.resources("PlanDefinition").search(
                                    identifier="sparc-workflow-uuid-001").first()
workflow_tool_process = await client.resources("Task").search(
                                    subject=workflow.to_reference(),
                                    focus=workflow_tool.to_reference(),
                                    based_on=research_subject.to_reference(),
                                    owner=patient.to_reference()).first()

• Find all input resources of the workflow tool process

inputs = workflow_tool_process.get("input")
for i in inputs:
    input_reference = i.get("valueReference")
    input_resource = await input_reference.to_resource()

• Find the input data comes from with dataset
  • Assume we don't know the dataset and patient uuids at this stage

composition = await client.resources("Composition").search(
                                    title="primary measurements", 
                                    entry=input_reference).first()
dataset = await composition.get("subject").to_resource()

• Find all output resources of the workflow tool process

outputs = workflow_tool_process.get("output")
for output in outputs:
    output_reference = output.get("valueReference")
    output_resource = await output_reference.to_resource()

References in PlanDefinition (workflow) resource

• action
  • definition_canonical: ActivityDefinition (workflow tool) reference

Example

• If known workflow uuid
  • Find all related workflow tools

    workflow = await client.resources("PlanDefinition").search(
                                        identifier="sparc-workflow-uuid-001").first()
    actions = workflow.get("action")
    
    for a in actions:
        if a.get("definitionCanonical") is None:
            continue
        resource_type, _id = a.get("definitionCanonical").split("/")
        workflow_tool = await client.reference(resource_type, _id).to_resource()
    

  • Find all related workflow processes

    workflow_tool_processes = await client.resources("Task").search(
                                        subject=workflow.to_reference()).fetch_all()
    

Reference in resource

• Patient
  • generalPractitioner: [ Practitioner reference ]
• ResearchSubject
  • individual: Patient reference
  • study: ResearchStudy reference
  • consent: Consent reference
• ResearchStudy
  • principalInvestigator: Practitioner reference
• Composition - primary measurements
  • author: [ Patient reference, Practitioner reference ]
  • subject: ResearchStudy reference
  • entry: [ Observation reference, ImagingStudy reference]
• ImagingStudy
  • subject: Patient reference
  • endpoint: [ Endpoint Reference ]
  • referrer: Practitioner reference
• Observation - primary measurements
  • subject: Patient reference
• PlanDefinition:
  • action.definitionCanonical: ActivityDefinition reference string
• ActivityDefinition:
  • participant: [ software uuid, model uuid]
• Task:
  • owner: patient reference
  • for: workflow reference
  • focus: workflow tool reference
  • basedOn: research subject reference
  • requester (Optional): practitioner reference
  • input: [ Observation reference, ImagingStudy reference ]
  • output: [ Observation reference, ImagingStudy reference ]
• Composition - workflow tool result
  • author: Patient reference
  • subject: Task (workflow tool process) reference
  • section:
    • entry: Observations
    • focus: ActivityDefinition (workflow tool) reference
• Observation - workflow tool result
  • focus: [ActivityDefinition reference]

DigitalTWIN on FHIR Diagram