Third-party data used by the documentation figures
==================================================

Patient data
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The arrays in docs/assets/gallery/data/ and the figures and thumbnails in
docs/source/_static/gallery/ that show patients use projections or images of
cases L213 and C002 from:

    McCollough, C., Chen, B., Holmes III, D., Duan, X., Yu, Z., Yu, L., Leng, S.,
    Fletcher, J. (2020). Low Dose CT Image and Projection Data
    (LDCT-and-Projection-data) (Version 7) [dataset]. The Cancer Imaging Archive.
    https://doi.org/10.7937/9npb-2637

    Moen, T. R., et al. (2020). Low dose CT image and projection dataset.
    Medical Physics. https://doi.org/10.1002/mp.14594

The Chest and Liver subsets are licensed under the Creative Commons Attribution
4.0 International License (https://creativecommons.org/licenses/by/4.0/).
The data were acquired under grants EB017095 and EB017185 (Cynthia McCollough,
PI) from the National Institute of Biomedical Imaging and Bioengineering.
"Ground truth" panels show the vendor images, converted from HU to water units
(x = 1 + HU / 1000). All other panels are reconstructions or simulations computed
with diffct. The Head subset is not used.

Walnut data
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walnut.png, iterative_cone.png and gradient_walnut.png use the measured walnut
scan described in examples/data/NOTICE (Meaney 2022, Zenodo 6986012, CC BY 4.0).
