Using Magnetic Resonance Imaging (MRI), this highly-accurate exam evaluates the structure of the aorta and the great vessels that supply the brain, detecting possible neurological disease. Magnetic Resonance Angiography (MRA), one of the very latest vascular imaging technologies available today, is used to gather spectacularly detailed three-dimensional images of the major blood pathways in and around the head, neck and chest. These images are carefully reviewed to identify any potential blockages, abnormalities or aneurysms that may create obstructions in blood flow from the heart to the brain and cause a stroke. The remarkable quality of an MRA of the brain has a nearly 100 percent sensitivity and specificity for aneurysms. It is estimated there are 20 million people in the United States affected by vascular disease, most commonly occurring in people starting in their 50's, with the risk increasing with age. People with risk factors such as hypertension, high cholesterol, diabetes, smoking (the #1 cause of atherosclerosis, or "hardening of the arteries"), and obesity. Those with a family history of stroke or transient ischemic attack (TIA) are also considered at risk for developing vascular disease.
Preparation:
Clear liquids only 4 hours prior
IV contrast administered
Mild sedation available upon request
Procedure time: 30 minutes
Why it's important
Stroke is the third leading cause of death in the United States, after heart disease and cancer, and strikes approximately 700,000 people each year, with 1 in every 15 resulting in death. It is also the leading cause of serious, long-term disability in the country. Stroke is silent - there are no warning signs for this sudden attack, which occurs when a blood vessel carrying oxygen and nutrients to the brain is either blocked, or ruptured. If potential blockages and aneurysms are identified early, however, steps can be taken for their treatment and, most importantly, the prevention of a stroke.