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Published online before print February 28, 2003, 10.1148/radiol.2271011415
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(Radiology 2003;227:283-288.)
© RSNA, 2003

Technical Developments

Coronary MR Angiography: True FISP Imaging Improved by Prolonging Breath Holds with Preoxygenation in Healthy Volunteers1

Richard M. McCarthy, MD, Steven M. Shea, MS, Vibhas S. Deshpande, MS, Jordin D. Green, MS, F. Scott Pereles, MD, James C. Carr, MD, J. Paul Finn, MD and Debiao Li, PhD

1 From the Departments of Radiology (R.M.M., S.M.S., V.S.D., J.D.G., F.S.P., J.C.C., J.P.F., D.L.) and Biomedical Engineering (S.M.S., V.S.D., J.D.G., D.L.), Northwestern University Medical School, Suite 700, 448 E Ontario St, Chicago, IL 60611. Received August 22, 2001; revision requested October 11; final revision received August 6, 2002; accepted August 20. Supported in part by grant HL 38698 from the National Institutes of Health and by Siemens Medical Solutions, Erlangen, Germany. Address correspondence to D.L. (e-mail: d-li2@northwestern.edu).

In 15 healthy volunteers undergoing coronary magnetic resonance (MR) angiography, the breath-hold duration with and without preoxygenation was measured. The effect of preoxygenation on coronary artery imaging was also evaluated. A three-dimensional magnetization-prepared true fast imaging with steady-state precession sequence was employed for coronary MR angiography. All subjects showed an increase in comfortable breath-hold duration with preoxygenation. This extra imaging time allowed coronary artery imaging with increased spatial resolution.

© RSNA, 2003

Index terms: Coronary vessels, MR, 54.12142, 54.121416 • Magnetic resonance (MR), pulse sequences, 54.12142, 54.121416 • Magnetic resonance (MR), rapid imaging, 54.12142, 54.121416 • Magnetic resonance (MR), vascular studies, 54.12142, 54.121416




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