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

Figure 7

Micro-computed tomography imaging of rhenium and iodine. Representative axial images acquired at 120 kVp by µCT with copper filters with the following thicknesses: (a) 0.6, (b) 1.2, and (c) 1.6 mm. The exposures correspond to X03, X04, and X05, respectively (see Table 1). The images depict the following XCA: Re-XCA ((A) 200 mM, (B) 100 mM, and (C) 50 mM), I-XCA ((D) 200 mM, (E) 100 mM, and (F) 50 mM), and controls ((G) water and (H) air). Attenuation: in (a), (A) 917 HU, (B) 460 HU, (C) 210 HU, (D) 803 HU, (E) 393 HU, (F) 176 HU, (G) 0, and (H) −998 HU. In (b), (A) 942 HU, (B) 473 HU, (C) 218 HU, (D) 661 HU, (E) 321 HU, (F) 138 HU, (G) 1, and (H) -996 HU. In (c), (A) 971 HU, (B) 486 HU, (C) 227 HU, (D) 610 HU, (E) 305 HU, (F) 137 HU, (G) 0, and (H) −998 HU.

(a)

(b)

(c)