As of July 7, 2025 TCIA no longer directly hosts any controlled access data that necessitates registering for an account. Please see our Data Usage Policies and Restrictions.
Most data are freely available to browse, download, and use for commercial, scientific and educational purposes as outlined in the Creative Commons Attribution 3.0 Unported License or the Creative Commons Attribution 4.0 International License. A small number of collections impose Creative Commons licenses with commercial use restrictions, but this is no longer an option for new submissions.
Due to NIH Controlled Data Access Policy changes implemented in April 2025, TCIA datasets that require data use agreements are now hosted by the NCI Cancer Research Data Commons with access requests managed via dbGaP.