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• You access a resource by sending an HTTP request to the TCIA API server. The server replies with a response that either contains the data you requested, or a status indicator.
• You can access the metadata of an API by appending /metadata to the end of the query. See examples. The metadata is in JSON format and conforms to this schema
• Most APIs can return results as CSV/JSON/XML/HTML. You can specify the return format by including the query parameter format
• Every request must contain an API-KEY. The key can be included in the url by adding an extra query parameter api_key or it can be included in the HTTP headers.
  You can obtain one API-KEY and use that for your application; you do not need a separate API-KEY for each user of your software..  To obtain an API-Key please send a request to help@cancerimagingarchive.net  or contact TCIA's help desk by phone at: +1 314-747-4254.
• An API request takes the following structure:
  <BaseURL><Resource><QueryEndpoint>?<QueryParameters><Format> 
  For example, the API shown below is a request to get all studies in the TCGA-GBM collection for patient GBM-0123 as CSV
  https://services.cancerimagingarchive.net/services/v2/TCIA/query/getPatientStudy?Collection=TCGA-GBM&PatientID=GBM-0123&format=csv
  This can be broken down as follows: 

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There are two RESTful servers provided by TCIA. A test system is loaded with a small set of known data to allow you to test your applications. The production system is configured to use the full TCIA database. The query format is the same for both systems. The base URLs are:

Click Here to see the test data that has been loaded on these test servers have the following test data

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