Consistency in imaging parameters was vital to ensure that observed grey-level changes reflected true material change rather than variations in acquisition conditions. In Case Study 2, all images were acquired during a single beamline session, ensuring consistent beam energy, filtering, and sample-to-detector distance. This consistency was verified by observing stable histogram peaks in empty regions above the sample across scans. In Case Study 1, additional care was required due to potential variability in the lab-based source. Flat-field images empty slices were examined for beam variation, which was found to be negligible.