Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Carotid artery stenosis MRA
Introduction
Overview
Overview
MRA tends to over-estimate the stenosis, but can be used in collaboration with duplex to evaluate the carotid stenosis.
MRA
MRA
If there is doubt whether the narrowing is still patent (open to blood flow) and the patient is to be assessed for treatment, the next imaging option would either be computed tomography angiography (CTA) or a magnetic resonance angiography (MRA).
Disadvantages of MRA
- MRA takes much longer to complete
- Over-estimates the stenosis
- More expensive and not yet as widely available
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]