Generating worklists and sending to Orthanc from an RIS using Java, RESTful web services and JSON

[Charles Waweru]

Hi, is there a way that I can generate worklists and send to Orthanc from an RIS using Java, RESTful web services and JSON

I have an Orthanc instance but cannot get information on how to generate worklist requests to the Orthanc server from RIS.

Thank you,

Charles

[Stephen Douglas Scotti]

Charles,

There is some basic information here:

https://book.orthanc-server.com/plugins/worklists-plugin.html

I also have some github repos that might be helpful, mostly this one:

https://github.com/sscotti/python_script_library

I started out using the text templates as outlines in the orthanc book, but then switched over to using that python script (as a plug-in) because it allows you to use JSON to create an MWL file.  I have a more integrated package on Python Plug-ins for that on my dev system that I can share if interested.

If you are using a RIS that uses Java, you would just have to create an API to post the JSON to the Python Plug-in, and then save the MWL on the filesystem in the worklists directory, or use a DB.

This link:  https://book.orthanc-server.com/plugins/python.html?highlight=python#handling-worklist-scp-requests-new-in-3-2

has some information about Python Plug-ins in general and about handling worklist requests with a Python Plug-in if you want to customize things further.

[Stephen Douglas Scotti]

If you are looking to actually query the MWL's from the RIS using an API and not from the modality directly, you can try something like this:

curl -d '{"PatientID":"","ScheduledProcedureStepSequence": [{"Modality": "MR"}]}' localhost:8042/modalities/SELF/find-worklist

To use that method you would have to setup your Orthanc server as a Modality in your orthanc.json config.  I use SELF as an entry.

    "DicomModalities" : {

        "SELF" : {

        "AET" : "AET",
        "Port" : 4242,
        "Host" : "ip",
        "Manufacturer" : "Generic",
        "AllowEcho" : true,
        "AllowFind" : true,
        "AllowMove" : true,
        "AllowStore" : true,
        "UseDicomTls" : false
        },

findscu from dcmtk is not bad for testing purposes also.

Normally, the modality itself (CT, MR, US) does the query using the DICOM protocol, and the orthanc MWL plug-in will handle that.