Magnetic Resonance Angiography
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Reasons for Test
- Identify diseased, narrowed, enlarged, and blocked blood vessels
- Locate internal bleeding
What to Expect
Prior to Test
- Ask about your medical history
- Perform a physical exam
- Do blood tests
- Arrange for a ride home.
- Do not eat or drink for at least 4 hours before the exam.
- Take the sedative 1-2 hours before the exam, or as directed.
- Pacemaker or implantable defibrillator
- Ear implant
- Metal fragments in your eyes or in any other part of your body
- Implanted port device, such as an insulin pump
- Metal plate, pins, screws, or surgical staples
- Metal clips from aneurysm repair
- Retained bullets
- Any other large metal objects in your body
- Given earplugs or headphones to wear. The MRI machine makes a loud banging noise.
- Given an injection of a contrast dye into your vein.
- Allowed to have a family member or friend with you during the test.
Description of the Test
- You will be asked to wait at the facility while the images are examined. The technician may need more images.
- If you took a sedative, do not drive or operate machinery until it wears off.
- If you are breastfeeding and receive contrast dye, you and your doctor should discuss when you should restart breastfeeding. Information available has not found any ill effects to the baby if a breastfeeding mother has had contrast dye.
How Long Will It Take?
Will It Hurt?
Call Your Doctor
- New or worsening symptoms
- Allergic or abnormal symptoms if contrast material was used
American Heart Association http://www.heart.org
Radiology Info—Radiologic Society of North America http://www.radiologyinfo.org
Health Canada http://www.hc-sc.gc.ca
The College of Family Physicians of Canada http://www.cfpc.ca
MR angiography (MRA). Radiological Society of North America Radiology Info website. Available at: http://www.radiologyinfo.org/en/info.cfm?pg=angiomr. Updated July 2, 2012. Accessed May 20, 2013.
Explore cardiac MRI. National Heart, Lung, and Blood Institute website. Available at: http://www.nhlbi.nih.gov/health/health-topics/topics/mri. Updated February 2, 2012. Accessed May 20, 2013.
Yucel EK, Anderson CM, et al. Magnetic resonance angiography: update on applications for extracranial arteries. Circulation. 1999;100(22):2284-2301.
- Reviewer: Michael J. Fucci, DO
- Review Date: 01/2015 -
- Update Date: 05/02/2014 -