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What the Clinician Wants to Know |
1 From the Departments of Radiology (N.M.R.) and Surgery (M.A.A.), New York University Medical Center, MRI-Basement, Schwartz Bldg, 530 First Ave, New York, NY 10016. Received November 9, 1998; revision requested January 5, 1999; revision received July 30; accepted August 11. Address reprint requests to N.M.R. (e-mail: rofsky @mri.med.nyu.edu). N.M.R. receives research support from Berlex Laboratories and is a member of the Speaker's Bureau for Berlex Laboratories.
Abstract
Magnetic resonance (MR) angiography of lower extremity occlusive vascular disease has evolved into a feasible diagnostic imaging option. The previous emphasis on time-of-flight techniques was associated with lengthy acquisition times and artifactual signal losses. Those limitations presented an obstacle to widespread clinical implementation. However, the emergence of rapid imaging sequences combined with gadolinium chelate enhancement offers time-efficient alternatives that can yield a truer representation of the vascular anatomic structure. The technology is now poised to serve as a routine screening study, provided that radiologists understand all factors needed to generate clinically relevant MR angiograms. This article is intended to provide a useful resource directed toward achieving that understanding.
Index terms: Angiography, 92.12942, 93.12942 • Arteries, extremities, 92.721 • Arteries, MR, 92.12942 • Grafts, 92.721 • Magnetic resonance (MR), maximum intensity projection, 92.12942 • Magnetic resonance (MR), three-dimensional, 92.12942
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