Orthanc (server)

{{Short description|DICOM server}}

{{Distinguish|Orthanc (Middle-earth)}}

{{Infobox software

| name = Orthanc

| logo = OrthancLogo-2016.png

| logo size = 180px

| screenshot =

| caption =

| author = Sébastien Jodogne, Liège University Hospital, Osimis, Orthanc Team, Université catholique de Louvain

| released = {{Start date and age|df=yes|2012|07|19}}

| latest release version = 1.12.8

| latest release date = {{start date and age|2025|06|13|df=yes}}{{cite web|url=https://orthanc.uclouvain.be/hg/orthanc/file/default/NEWS|title=Release notes|access-date=13 Jun 2025}}

| latest preview version =

| latest preview date =

| programming language = C++, HTML, JavaScript

| platform =

| language = English

| genre = Vendor Neutral Archive

| license = GPLv3

| operating_system = Linux, Windows, macOS

}}

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.{{Cite web|url=https://www.orthanc-server.com/static.php?page=about|title=Orthanc about page|access-date=2022-05-10}}

{{cite conference

|author1=S. Jodogne |author2=C. Bernard |author3=M. Devillers |author4=E. Lenaerts |author5=P. Coucke | year = 2013

| title = Orthanc - A Lightweight, RESTful DICOM Server for Healthcare and Medical Research

| book-title = Proceedings of the IEEE International Symposium on Biomedical Imaging

| pages = 190–193

| url = http://orbi.ulg.ac.be/handle/2268/163949

}}

{{cite journal

|author1=S. Jodogne |author2=S. Sobczak |author3=M. Devillers |author4=E. Lenaerts |author5=P. Martinive |author6=P. Coucke | year = 2013

| title = Orthanc - Lightweight, Scriptable DICOM Server for Medical Image Management in Radiotherapy

| journal = Radiotherapy & Oncology

| volume = 106

| issue = 2

| pages = S488

| url = http://orbi.ulg.ac.be/handle/2268/152912

|doi=10.1016/S0167-8140(15)33607-0 |doi-access=free}}

{{cite journal

|author1=S. Jodogne

|year=2018

|title=The Orthanc Ecosystem for Medical Imaging

|journal=Journal of Digital Imaging

|doi=10.1007/s10278-018-0082-y

|volume=31

|number=3

|pages=341–352|doi-access=free

|pmid=29725964

|pmc=5959835

}} 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.{{Cite book |last1=Jodogne |first1=S. |last2=Bernard |first2=C. |last3=Devillers |first3=M. |last4=Lenaerts |first4=E. |last5=Coucke |first5=P. |chapter=Orthanc - A lightweight, restful DICOM server for healthcare and medical research |date=April 2013 |title=2013 IEEE 10th International Symposium on Biomedical Imaging |chapter-url=https://ieeexplore.ieee.org/document/6556444 |pages=190–193 |doi=10.1109/ISBI.2013.6556444|hdl=2268/163949 |isbn=978-1-4673-6455-3 |s2cid=11376162 }}