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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 20:263-266 (2 1999)
© 1999 American Society of Neuroradiology

ARTICLE

Use of Three-dimensional MR Angiography for Tracking a Contrast Bolus in the Carotid Artery

Elias R. Melhem^,a, Shelton D. Caruthers^a, Sami G. Faddoul^a, Richard Tello^a and Hernan Jara^a

^a From the Department of Radiology, The Johns Hopkins Medical Institution, Baltimore, MD (E.R.M.), and the Department of Radiology, Boston University Medical Center, Boston, MA (S.D.C., S.G.F., R.T., H.J.).

Summary: Contrast-bolus tracking in the carotid bifurcation was accomplished using an MR angiographic technique with a 3D turbo field-echo readout (TR/TE = 6/3, flip angle = 50°) modified by a keyhole scheme. Optimal visibility of the contrast bolus was achieved by digital subtraction from a reference volume. This technique reliably time-resolves the carotid arteries from the jugular veins.

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