Comparison of Rhenium and Iodine as Contrast Agents in X-Ray Imaging

Figure 5

Effect of the X-ray tube potential on the contrast-to-noise ratio. The concentration of rhenium and iodine in the XCA was 200 mM. A 0.6 mm thick copper filter was used as additional filtration. The XCA were imaged by µCT. Settings: 50 kVp (10 mAs), 80 kVp (5 mAs), and 120 kVp (2.5 mAs), that is, exposures X01, X02, and X03, respectively (see Table 1).