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Three-dimensional CT Angiography of the Hepatic Artery: Use of Multi–Detector Row Helical CT and a Contrast Agent¹

¹ From the Department of Radiology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki, Osaka 569-8686, Japan. Received November 30, 2001; revision requested January 25, 2002; final revision received August 26; accepted September 30. Address correspondence to M.T.

The administration of a contrast agent to obtain optimal images at three-dimensional computed tomographic (CT) angiography of the hepatic artery by using multi–detector row helical CT was investigated. Three-dimensional CT angiographic images were evaluated visually, and quantitative evaluation was performed by measuring the postcontrast CT number of the aorta. The injection rate of 5 mL/sec was significantly superior to that of 4 mL/sec in both evaluations. At administration of a contrast agent with 300 or 350 milligrams of iodine per milliliter, there were no significant differences in either evaluations. The preferable injection rate to obtain sufficient three-dimensional CT angiographic data was 5 mL/sec.

© RSNA, 2003

Index terms: Computed tomography (CT), angiography, 952.12915, 952.12916 • Computed tomography (CT), three-dimensional, 952.12917 • Contrast media, comparative studies • Hepatic arteries, CT, 952.12912, 952.12913, 952.12915, 952.12916, 952.12917

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