Two case studies were conducted to validate this approach. The first case study used ex-situ data collected with a lab-based micro-CT system, while the second case study employed operando data acquired at a synchrotron beamline. Both studies revealed statistically significant grey-level changes in NMC particles subjected to different states of charge. These changes were attributed to cracking and void formation, even when the cracks and voids were below the resolution of micro-CT imaging. By leveraging the partial volume effect, the method demonstrated the ability to detect these sub-resolution features, highlighting the power of micro-CT's excellent sampling statistics to assess large populations of particles.