CBCT Walnut (Cone-Beam X-Ray CT Data Collection Designed for Machine Learning)

The scans are performed using a custom-built, highly flexible X-ray CT scanner, the FleX-ray scanner, developed by XRE nvand located in the FleX-ray Lab at the Centrum Wiskunde & Informatica (CWI) in Amsterdam, Netherlands. The general purpose of the FleX-ray Lab is to conduct proof of concept experiments directly accessible to researchers in the field of mathematics and computer science. The scanner consists of a cone-beam microfocus X-ray point source that projects polychromatic X-rays onto a 1536-by-1944 pixels, 14-bit flat panel detector (Dexella 1512NDT) and a rotation stage in-between, upon which a sample is mounted. All three components are mounted on translation stages which allow them to move independently from one another.

Please refer to the paper for all further technical details.

The complete data set can be found via the following links: 1-8 https://doi.org/10.5281/zenodo.2686725 , 9-16 https://doi.org/10.5281/zenodo.2686970, 17-24 https://doi.org/10.5281/zenodo.2687386, 25-32 https://doi.org/10.5281/zenodo.2687634, 33-37 https://doi.org/10.5281/zenodo.2687896, 38-42 https://doi.org/10.5281/zenodo.2688111

The corresponding Python scripts for loading, pre-processing and reconstructing the projection data in the way described in the paper can be found on github https://github.com/cicwi/WalnutReconstructionCodes