Time resolved X-ray Dark-Field Tomography Revealing Water Transport in a Fresh Cement Sample.Grating-based X-ray dark-field tomography is a promising technique for biomedical and materials research. 
X-ray dark-field tomography
Even if the resolution of conventional X-ray tomography does not suffice to resolve relevant structures, the dark-field signal provides valuable information about the sub-pixel microstructural properties of the sample. 
X-ray tomography