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

Figure 6

Effect of the amount of additional filtration on the contrast-to-noise ratio. The percent CNR improvement of rhenium over iodine is increased as the amount of additional filtration is increased. The concentration of rhenium and iodine in the XCA was 200 mM. The XCA were imaged by µCT. All the scans were conducted at 120 kVp. They correspond to exposures X03, X04, and X05 (see Table 1).