Figure 3. Tomographic reconstruction of the water sample in a polypropylen container.

(a), (b), (c): measured with the FR591 rotating anode X-ray tube working at 20, 30 and 60 kVp, respectively. (d): measured with the compact light source at 21 keV. Color scales represent measured density times absorption coefficients (ρ · μ) at the used X-ray energy. The polypropylene container is barely seen in (a).