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(Radiology. 1999;213:913-918.)
© RSNA, 1999

Technical Developments

Optimal Protocol for Injection of Contrast Material at MR Angiography: Study of Healthy Volunteers1

Katsuhiko Mitsuzaki, MD, Yasuyuki Yamashita, MD, Ichiro Ogata, MD, Yi Tang, MD, Tomohiro Namimoto, MD and Mutsumasa Takahashi, MD

1 From the Department of Radiology, Kumamoto University School of Medicine, 1-1-1 Honjo Kumamoto 860, Japan. Received July 15, 1998; revision requested August 6; final revision received February 16, 1999; accepted June 8. Address reprint requests to K.M. (e-mail: katsumit@kaiju.medic.kumamotou.ac.jp).

Forty healthy volunteers, matched for age and body weight, underwent abdominal magnetic resonance angiography with gadopentetate dimeglumine administered by using a power injector. Injection rates were 0.3, 1.0, 2.0, or 3.0 mL/sec. Contrast material doses were 0.1 (single dose) or 0.2 (double dose) mmol/kg. Increased contrast enhancement in the aorta and minimum arteriovenous overlap can be achieved with high flow rate and double-dose injection.

Index terms: Aorta, MR, 94.129416, 94.12943 • Arteries, MR, 94.129416, 94.12943 • Magnetic resonance (MR), contrast enhancement, 94.129416, 94.12943 • Magnetic resonance (MR), vascular studies, 94.129416, 94.12943




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