The training dataset is available for download at Zenodo.

This challenge contains a public training dataset of lung nodules extracted from the LIDC-IDRI dataset. This dataset only contains 3D patches of nodules (size 128x128x64 in x, y, and z directions) that had been annotated by at least 3 out of 4 radiologists (following LUNA16 criteria, which produces 1186 nodules). The nodules are always located at the center of the 3D patch. 10 nodules have been excluded as part of a hidden test set for phase 1.