...
Please consult the Citation & Data Usage Policy tab found on each collection's summary page to learn about how it can be used. Most collections 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. Some collections have additional copyrights or restrictions associated with their use which we have summarized below for convenience. If you have utilized TCIA in your research, please contact us at help@cancerimagingarchive.net so we can include your work on our Related Publications page.
Here is a screenshot showing where to find the relevant citations and data usage policy on each Collection page:
Collection Specific Usage Policies
...