Iodinated contrast

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See Also Contrast medium

Iodinated contrast is a form of intravenous radiocontrast (radiographic dye) containing iodine, which enhances the visibility of vascular structures and organs during radiographic procedures. Some pathologies, such as cancer, have particularly improved visibility with iodinated contrast.

Iodinated contrast media may either be oil-based or water-soluble, the former of which is slowly absorbed by body tissue and is usually only used in sialographic and hysterosalpingographic examinations. Water-soluble iodinated medium, which is more quickly absorbed, may be used in place of barium sulfate for gastrointestinal studies that are contraindicated by the use of barium for that reason.

Iodinated medium may also be either ionizing or non-ionizing. The ionizing type tends to create a high osmolality in blood and may cause a contrast media reaction in some individuals, which may be life-threatening for those with certain medical conditions. The non-ionizing form decreases this risk, but is much more expensive. The non-ionizing contrast media is much more widely used today.

Shortly after infusion, iodinated contrast medium causes a warming sensation throughout the body. Sometimes this feeling is more pronounced in the pelvic area.

Iodinated contrast is toxic to the kidneys and kidney function of the patient receiving a dose should be considered before the exam. A creatinine level in the blood should be no higher than 1.4 to receive iodinated contrast. Following up with extra fluids after an injection is highly recommended.

When imaging an average patient, do not use over 70kVp when using iodinated contrast media

References

• Bontranger, Kenneth L. & Lampignano, John P. (2005). Radiographic Positioning and Related Anatomy, St. Louis: Elsevier Mosby. ISBN 0-323-02507-2.

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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .