Orthanc (server)

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Original author(s)Sébastien Jodogne, Liège University Hospital, Osimis, Université catholique de Louvain
Initial release19 July 2012; 10 years ago (2012-07-19)
Stable release
1.11.3 / 3 February 2023; 4 days ago (2023-02-03)[1]
Written inC++, HTML, JavaScript
Operating systemLinux, Windows, macOS
Available inEnglish
TypeVendor Neutral Archive
Websitewww.orthanc-server.com Edit this on Wikidata

Orthanc is a standalone DICOM server. It is designed to improve the DICOM flows in hospitals and to support research about the automated analysis of medical images. Orthanc lets its users focus on the content of the DICOM files, hiding the complexity of the DICOM format and of the DICOM protocol.[2][3][4] It is licensed under the GPLv3.

Orthanc can turn any computer running Windows, Linux or OS X into a DICOM store (in other words, a mini-PACS system). Its architecture is standalone, meaning that no complex database administration is required, nor the installation of third-party dependencies. Orthanc is also available as Docker images.

Orthanc provides a RESTful API on top of a DICOM server. Therefore, it is possible to drive Orthanc from any computer language. The DICOM tags of the stored medical images can be downloaded in the JSON file format. Furthermore, standard PNG images can be generated on the fly from the DICOM instances by Orthanc.


Orthanc also features a plugin mechanism to add new modules that extends the core capabilities of its REST API. As of May 2022, a dozen of plugins are available:

History & awards[edit]

Orthanc was initiated by Sébastien Jodogne in 2011 while working at CHU de Liège. The initial public release happened on 19 July 2012; 10 years ago (2012-07-19).

For his work on Orthanc, Sébastien Jodogne received the Free Software Award for 2014.[5] Orthanc also received the eHealth Agoria award for 2015.[6]

From 2015, the development has also been supported by Osimis, still with Sébastien Jodogne as the main contributor.

Since 2021, the development is provided by UCLouvain with Sébastien Jodogne and by Alain Mazy with financial support from Osimis and from Open Collective


Orthanc is part of the Debian Med project.[7] Official packages are available for numerous Linux distributions including Debian,[8] Ubuntu[9] and Fedora.[10] Ports are available for FreeBSD and OpenBSD. Windows/MacOS binary installer packages may be freely downloaded from the Orthanc website but are provided by a commercial partner.

Orthanc is also available as a Beta-package through the package center for Synology NAS users.

See also[edit]


  1. ^ "Release notes". Retrieved 6 Feb 2023.
  2. ^ "Orthanc about page". Retrieved 2022-05-10.
  3. ^ S. Jodogne; C. Bernard; M. Devillers; E. Lenaerts; P. Coucke (2013). "Orthanc - A Lightweight, RESTful DICOM Server for Healthcare and Medical Research". Proceedings of the IEEE International Symposium on Biomedical Imaging. pp. 190–193.
  4. ^ S. Jodogne; S. Sobczak; M. Devillers; E. Lenaerts; P. Martinive; P. Coucke (2013). "Orthanc - Lightweight, Scriptable DICOM Server for Medical Image Management in Radiotherapy". Radiotherapy & Oncology. 106 (2): S488. doi:10.1016/S0167-8140(15)33607-0.
  5. ^ "Sébastien Jodogne, Reglue are Free Software Award winners — Free Software Foundation — working together for free software". www.fsf.org. Retrieved 2017-02-12.
  6. ^ "Le CHU Liège remporte l'Agoria eHealth Award avec une première mondiale pour les images médicales". 2015-06-08. Retrieved 2017-02-12.
  7. ^ "Debian Med Imaging packages". Archived from the original on 2014-03-23. Retrieved 2012-12-10.
  8. ^ "Debian - Details of package orthanc".
  9. ^ "Ubuntu packages".
  10. ^ "Fedora packages".

External links[edit]