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Role of Magnetic Resonance Imaging in Visualizing Coronary Arteries

Department of Internal Medicine, Marshfield Clinic, Marshfield, Wisconsin

Kodlipet C. Dharmashankar, MD

Department of Internal Medicine, Marshfield Clinic, Marshfield, Wisconsin

Tahir Tak, MD, PhD^*

Department of Cardiology, Marshfield Clinic, Marshfield, Wisconsin

REPRINT REQUESTS: Tahir Tak, MD, PhD, Division of Cardiology, Department of Internal Medicine, University of North Texas Health Science Center, 855 Montgomery Street, Fort Worth, TX 76104, Telephone: 817-735-2332, Fax: 817-735-2673, Email: ttak{at}hsc.unt.edu

Ischemic heart disease is the leading cause of death worldwide. At present, coronary angiography is the gold standard for the diagnosis of coronary artery disease. Conventional coronary angiography is an invasive procedure with a small, yet inherent risk of myocardial infarction, stroke, potential arrhythmias, and death. Other noninvasive diagnostic tools, such as electrocardiography, echocardiography, and nuclear imaging are now widely available but are limited by their inability to directly visualize and quantify coronary artery stenoses and predict the stability of plaques. Coronary magnetic resonance angiography (MRA) is a technique that allows visualization of the coronary arteries by noninvasive means; however, it has not yet reached a stage where it can be used in routine clinical practice. Although coronary MRA is a potentially useful diagnostic tool, it has limitations. Further research should focus on improving the diagnostic resolution and accuracy of coronary MRA. This review summarizes results from several studies comparing coronary MRA with conventional coronary angiography. Current two-dimensional and three-dimensional coronary MRA techniques and their limitations are also discussed.

Key Words: Coronary vessels • Angiography • Imaging, magnetic resonance

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