PIXL FlowEHR_Dicom Solution Design

DICOM Service solution design

Overview

References

• REST API of Orthanc
• Performing Query/Retrieve (C-Find) and Find with REST
• Performing Retrieve (C-Move)
• Quick reference of the REST API of Orthanc
• Python plugin for Orthanc
• DICOM Standard - Part 15

Steps

Orthanc raw

• Set up Orthanc raw with Postgres plugin. Configure to be index only, i.e. images stored on disk.
• Set up PACS/VNA as Q/R target.
• Perform C-FIND on PACS/VNA via raw API to collate dataset (if required).
• Retrieve dataset (C-MOVE) using API:

For each series/instance do:
	- Issue C-MOVE from PACS/VNA to raw.
	- Verify move success.
	- Remove series/instance from queue/list.

Orthanc anon

• Set up Orthanc anon with DICOMweb plugin.
• Set up raw as Q/R target.
• Set up Azure DICOM service as DICOMweb endpoint
• Poll raw for new instances via API:

For each instance do:
	- C-MOVE from raw to anon.
	- Get patient UID from hasher.

• Python Plugin written to execute on ReceivedInstanceCallback. See Modifying received instances (new in 4.0)

Callback plugin

For each received instance do:
	- GET anon. patient UID from hasher API.
	- Apply anonymisation.
	- Send via STOW to target.
	- Check instance received via WADO (?)
	- Drop Instance (i.e. do not write to disk)