Does Orthanc support worklists?
===============================

Orthanc supports DICOM Modality Worklists (MWL) through its `plugin
SDK
<https://github.com/jodogne/OrthancContributed/tree/master/Plugins>`__.
In other words, Orthanc can act as a worklist server (C-Find SCP), but
an user-defined plugin must be provided to answer a list of worklists
given a MWL query.

The rationale for using plugins instead of providing a built-in MWL
mechanism, is that the way worklists are generated is very specific to
the clinical flows and to the manufacturer of your `RIS system
<https://en.wikipedia.org/wiki/Radiology_information_system>`__.
Indeed, depending on the situation, worklists can be generated either
from HL7 messages, from calls to a Web service (e.g. through FHIR), or
from a direct access to some RIS database. It is thus up to the
Orthanc user to provide the worklist generator that is best suited for
her use.

A `sample plugin
<https://bitbucket.org/sjodogne/orthanc/src/default/Plugins/Samples/ModalityWorklists/>`__
is available to serve the worklists stored in some folder on the
filesystem. This mimics the behavior of the ``wlmscpfs`` command-line
tool from the `DCMTK software
<http://support.dcmtk.org/docs/wlmscpfs.html>`__. ``dump2dcm`` might
be a very `useful companion tool
<http://support.dcmtk.org/docs/dump2dcm.html>`__ to feed the sample
plugin with worklists for some separate maintenance script.

For more complex or integrated workflows where you must implement a
custom MWL plugin, please check the `documentation of the part of the
Orthanc plugin SDK
<https://orthanc.chu.ulg.ac.be/sdk/group__Worklists.html>`__ that is
related to the management of worklists.