The Cancer Imaging Archive (TCIA) datasets

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The Cancer Imaging Archive (TCIA) hosts collections of de-identified medical images, primarily in DICOM format. Collections are organized according to disease (such as lung cancer), image modality (such as MRI or CT), or research focus.

The Cloud Healthcare API provides access to these datasets via Google Cloud (GCP), as described in Google Cloud data access.

License and attribution

The TCIA public access datasets are available under the Creative Commons Attribution 3.0 Unported License. Most collections are "freely available to browse, download, and use for commercial, scientific and educational purposes." For details, see the TCIA Data Usage Policies and Restrictions.


For each collection you use, cite both the TCIA in general and the specific sources for the collection.

General citation

Cite the following general TCIA publication:

Clark K, Vendt B, Smith K, Freymann J, Kirby J, Koppel P, Moore S, Phillips S, Maffitt D, Pringle M, Tarbox L, Prior F. The Cancer Imaging Archive (TCIA): Maintaining and Operating a Public Information Repository, Journal of Digital Imaging, Volume 26, Number 6, December, 2013, pp 1045-1057. (paper)

Collection citations

Each TCIA collection has specific citation requirements. These may be data citations, publication citations, or both. Some collections also require attribution for additional data sources.

Details are available in the TCIA Attribution section. You can also refer to the citation and data usage policy on each collection summary page on the TCIA site.

Accessing the TCIA datasets

You can get the TCIA datasets from Cloud Storage, BigQuery, or using the Cloud Healthcare API.

Cloud Storage

Each TCIA dataset is available in a Cloud Storage bucket within the Google Cloud project named chc-tcia.

Go to the TCIA datasets in Cloud Storage

Dataset bucket names are in the following format:


To find the DATASET_ID, refer to the TCIA Attribution section. The last portion of the attribution page URL (immediately preceding .html) corresponds to the dataset ID. For example, the TCGA-BRCA citations page has the following URL:

The dataset ID is tcga-brca. The corresponding Cloud Storage bucket is:


Within each bucket, the data is organized as follows:


Each Cloud Storage bucket uses the "Requester Pays" model for billing. Your Google Cloud project will be billed for the charges associated with accessing the TCIA data. For more information, see Requester Pays.


Each TCIA dataset is available in BigQuery in the chc-tcia Google Cloud project.

Go to the TCIA datasets in BigQuery

For information about accessing public data in BigQuery, see BigQuery public datasets.

Cloud Healthcare API

Each TCIA dataset is available in the Cloud Healthcare API in the chc-tcia project.

To request access to the TCIA datasets, complete this form.

Go to the TCIA datasets in the Cloud Healthcare API

For information about the structure of the data, see the DICOM overview and Using the DICOMweb standard.

External data viewers

You can also use the viewers that are integrated with the Cloud Healthcare API:


IMS CloudVue: