**Question:** Are the DICOM metadata are available for the Sub-Challenge 1? **Answer:** The DICOM header of each image provides a wealth of technical information as well as clinical information. All the metadata that are clinical data (e.g. subject age) are removed from the DICOM header (Sub-challenge 1 and 2). The list of fields that have been removed from the DICOM header of each image will be provided shortly. In Sub-challenge 2, clinical and demographical data are provided as a table (.tsv).