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  • Title: Contrast media for CT. An analysis of the early pharmacokinetics.
    Author: Jensen LI, Dean PB, Nyman U, Golman K.
    Journal: Invest Radiol; 1985 Nov; 20(8):867-70. PubMed ID: 4077440.
    Abstract:
    Iohexol and meglumine-sodium diatrizoate were injected intravenously into 18 pigs as either a 99:1 or 1:99 mixture. Blood samples were taken for 30 minutes and the concentration of each of the two contrast media was measured by means of a double labeling technique with 125I and 131I. Relative concentrations of iohexol were significantly higher during the first 3 minutes when it was injected as a moderately hyperosmolar (99% iohexol) solution than when it was injected as a very hyperosomolar (99% diatrizoate) solution. The greater intravascular dilution of the 99% diatrizoate solution by extravascular water may explain this finding as well as the significantly longer rapid disposition phase and the slightly lower distribution volume of iohexol.
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