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This document describes the various representational state transfer application programming interface (REST API) implementations that can be used to access TCIA data and resources. The APIs form a RESTful interface, accessed through web URLs. An application developer does not need to download any software to use the APIs. The application developer can build their own access routines using only the API documentation provided. 

TCIA currently offers two RESTful interfaces to its DICOM imaging data, as follows:

  • TCIA REST APIs: Originally developed using Project Bindaas with Emory University, these APIs provide programmatic access only to public collections and do not require authentication to use them. The TCIA REST API Guide describes these APIs.  Anyone may use these APIs without asking for an API key or secret.
  • National Biomedical Imaging Archive (NBIA) Search REST APIs: Provided as part of the NBIA software, these APIs provide programmatic access to the current search and download functions used in the TCIA radiology portal, and allow access to both public and limited access collections. The NBIA Search REST API Guide describes these APIs. In order to use these APIs, a developer must request a Client ID and Client Secret from the TCIA Help Desk, then use that Client ID and Client Secret to obtain an OAuth2 token. That token must be passed to the server in the https headers of API calls, as described in the guide.

The APIs complement the existing web interfaces and can be used in programmatic viewing and analysis applications.

The following guides to the two RESTful interfaces are available:

Note that new versions of the APIs may introduce new data types that have not yet been documented. 

If you are interested in using the APIs and have any questions, please contact the TCIA Help Desk

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