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(Stroke. 2001;32:2282.)
© 2001 American Heart Association, Inc.

Original Contributions

Contrast-Enhanced Magnetic Resonance Angiography of the Cervical Vessels

Experience With 422 Patients

Thanh Phan, MD; John Huston, III, MD; Matthew A. Bernstein, PhD; Stephen J. Riederer, PhD Robert D. Brown, Jr, MD

From the Departments of Diagnostic Radiology (T.P., J.H., M.A.B., S.J.R.) and Neurology (R.D.B.), Mayo Clinic, Rochester, Minn.

Reprint requests to John Huston III, MD, Department of Diagnostic Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905.

Background and Purpose—— Contrast-enhanced magnetic resonance angiography (CEMRA) permits acquisition of high-spatial-resolution, venous-suppressed, 3D MR angiograms of the cervical carotid and vertebral arteries. In this study, an elliptic centric-view ordering with either MR fluoroscopic triggering or test bolus timing was used. The use of CEMRA of the cervical vessels has changed our clinical practice and is replacing conventional angiography for the evaluation of most carotid and vertebral artery diseases.

Methods—— We retrospectively reviewed our experience with the use of CEMRA performed in 422 patients from January through December 1999.

Results—— CEMRA was performed to evaluate transient ischemic attack and ischemic stroke in 239 patients, asymptomatic carotid bruit in 88 patients, and other neurological symptoms in 95 patients. Carotid endarterectomies were performed in 97 patients (103 procedures), and conventional angiography was performed in 12 of these patients. CEMRA was used to evaluate for the presence of an arterial dissection in 85 of the 239 patients with transient ischemic attack and ischemic stroke. Of this group, 32 patients had cervical arterial dissection, and pseudoaneurysm was detected in 11 of these patients. Compared with ultrasonography of the cervical vessels, CEMRA provided additional information in 43 of 422 patients and led to changes in the decision as to whether to perform carotid endarterectomy in 5 patients.

Conclusions—— Use of CEMRA permits noninvasive evaluation of patients suspected of having carotid or vertebral disease and avoids the potential complications of conventional angiography.

Key Words: cerebral ischemia • cerebral vessels • magnetic resonance angiography • stroke • stroke prevention

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