Radiology Which of the following statements about contrast in radiography is true – A Ionic monomers have three iodine atoms per two paicles in solution B High osmolar contrast agents may be ionic or non ionic C Gadolinum may cross the blood brain barrier D Iohexol is a high osmolar contrast media 💡 Explanation Which of the following statements about contrast in radiography is true - ✓ Correct Answer: A. Ionic monomers have three iodine atoms per two paicles in solution