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Topic: Contrast media
Question 1 of 83
Regarding the use of contrast media:
  • ARadio-opaque contrast media agents are chosen to maximise absorption via the Compton effect.
  • BThe K-edge of iodine is 3 keV.
  • CBone and iodine have a similar CT number because they have a similar atomic number.
  • DHigh-density and low-density contrast agents can sometimes be used together to improve image contrast and quality.
  • EA positive contrast agent should ideally have K-edge energy equal to the characteristic radiation from the tube.