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Minimizing contrast agent dose during intraarterial gadolinium‐enhanced MR angiography: In vitro assessment by Ken‐Pin Hwang; Jordin D. Green; Debiao Li; Orlando P. Simonetti; Scott A. Resnick; J. Paul Finn; Jeffrey L. Duerk; Reed A. Omary is a Medicine article available to read on EtoBox.

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## Abstract ## Purpose To minimize contrast agent dosage for intra‐arterial (IA) contrast‐enhanced magnetic resonance angiography (CE‐MRA) by examining the effects of encoding order (elliptical vs. sequential) and injection duration (100% to 30% of the acquisition time). ## Materials and Methods Catheter‐based IA gadolinium (Gd) injections were performed in an arterial flow phantom. Blood flow rates, injection rates, and injection durations were systematically varied. Signal‐to‐noise (SNR) measurements were obtained in the aorta, renal artery, and common iliac artery. ## Results No significant SNR losses were observed for any of the vessels with 75% injection duration, or for the aorta and iliac artery with 50% injection duration. Excellent images of all vessels were obtained at 50% injection duration. There was no significant SNR difference between encoding schemes. ## Conclusion Contrast agent dosage can be substantially reduced without loss of SNR by limiting injection to part of the imaging acquisition time. J. Magn. Reson. Imaging 2002;15:55–61. © 2002 Wiley‐Liss, Inc.

Who reads Minimizing contrast agent dose during intraarterial gadolinium‐enhanced MR angiography: In vitro assessment?

Author

Ken‐Pin Hwang; Jordin D. Green; Debiao Li; Orlando P. Simonetti; Scott A. Resnick; J. Paul Finn; Jeffrey L. Duerk; Reed A. Omary

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1053-1807)

Published

2002

Language

EN

Field

Medicine (Health Sciences)