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Attenuation values (HU) of diluted blood, blood-iodine mixtures, and diluted iodine on SDCT conventional and VNC imagesa
Conventional (HU)VNC (HU)R-VNC (%)
Mean95% CIMean95% CIMean95% CI
100% blood–0% iodine39.131.5–46.739.131.5–46.799.698.8–100.4
67% blood–33% iodine49.542.8–56.240.435.9–44.982.879.5–86.1
50% blood–50% iodine49.241.7–56.732.628.6–36.667.664.4–70.9
33% blood–67% iodine49.442.2–56.626.023.3–28.654.350.6–58.0
0% blood –100% iodine129.599.4–159.614.513.4–15.615.712.4–19.1
  • ↵a R-VNC attenuation (%) was calculated by comparing VNC attenuation with the attenuation on conventional CT for all investigated categories.