TORCH - Transfer Of Resources in Clinical Healthcare

Goal

Transfer Of Resources in Clinical Healthcare or Torch is a project that aims to provide a service that allows the execution of data extraction queries on a FHIR-server.

The tool will take a CRTDL and StructureDefinitions to extract specific resources from a FHIR server. It first extracts a cohort based on the cohort definition part of the CRTDL using either CQL or FLARE and FHIR Search. It then extracts resources for the cohort as specified in the cohort extraction part of the CRTDL, which specifies which resources to extract (Filters) and which attributes to extract for each resource.

The tool internally uses the HAPI implementation for handling FHIR Resources.

CRTDL

The Clinical Resource Transfer Definition Language or CRTDL is a JSON format, which specifies a data request. This request is composed of two parts: The cohort definition (for who (which patients) should data be extracted) The data extraction (what data should be extracted)

Documentation

Documentation can be found here.

Supported Features

• Loading of StructureDefinitions
• Redacting and Copying of Resources based on StructureDefinitions
• Parsing CRTDL
• Interaction with a Flare and FHIR Server
• MII Consent handling
• OAuth Support
• Multi Profile Support
• Extended Reference Resolving

Outstanding Features

• Auto Extracting modifiers
• Black or Whitelisting of certain ElementIDs locally
• Validating against Profiles
• Value Set based Slicing

License

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an " AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.