SQAN (formerly RADY-SCA) is a full-stack system solution for extracting, translating, and logging (ETL) + modern web portal-based quality-control verification of DICOM-format medical imaging data and metadata. SQAN consists of four principle components:

• Incoming (node.js)
  • Watches for and retrieves imaging data from a transfer service (e.g. an Orthanc instance)
  • Extracts and compresses metadata and stores in a database
• Quality Control (node.js)
  • Performs protocol and exam-level verification on newly arrived data, and on existing data as requested
• API (node.js/ExpressJS)
  • Provides authorized access to metadata and QC results
• UI (AngularJS)
  • Allows authorized users to view stored data, QC results, modify QC templates and access controls, comment on QC issues, alert affected researchers, and re-run QC tests

• node.js (>8.0)
• npm (>6.1)
• MongoDB (>3.4)
• nginx

1. Clone this repository
2. cd sqan && npm install
3. cd config && ./genkey.sh

• generates public/private keys for JSON Web Token signing/verification

4. cp index.sample.js index.js

• Modify config/index.js as needed

5. cd ../ui && cp config.sample.js config.js

• Modify ui/config.js as needed

6. Launch API

• npm start

7. Configure nginx to serve API/UI
8. (optional) Load sample dataset (available upon request)
9. (optional) Initiate Incoming and QC processes

• npm run incoming
• npm run qc

10. (optional) Use pm2 or similar process manager to run API and other required processes listed above.

Sample nginx configuration to serve UI and API

    location / {
        alias /usr/local/sqan/ui;
        index index.html;
        try_files $uri $uri/ /index.html =404;
    }
    
    location /api/qc/ {
        proxy_pass http://localhost:22340/;
    }

Make sure the port for the API matches that set in config/index.js and the location for the API matches the setting in ui/config.js