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QUIBA (The Quantitative Imaging Biomarkers Alliance) invites participation in the QIBA 3A CT Volumetry Study of CLINICAL data.
Information about the challenge is at http://qibawiki.rsna.org/index.php?title=VolCT_-_Group_3A
Additional information about the RIDER data set is at https://wiki.cancerimagingarchive.net/display/Public/RIDER+Collections