Magnetic Resonance Imaging
(Imaging, Magnetic Resonance; MRI Scan; MRI)
Reasons for Test
|MRI of Brain Injury|
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- Medical devices likes pacemakers, ear implants, insulin pumps, and shunts
- Joint replacements, plates, or metal pins
- Metal objects or fragments in your body—An x-ray may be done before the MRCP.
What to Expect
Prior to Test
You will be asked about the following:
- Medical and surgical history
- Other conditions that you may have—If your MRI involves contrast material, your doctor will ask about the health of your kidneys. There is a risk of complications in people who have kidney disease and receive contrast material.
You will be asked if you have something in your body that would interfere with the MRI, such as:
- Pacemaker or implantable defibrillator.
- Ear implant .
- Metal fragments in your eyes or in any other part of your body. Be sure to tell your doctor if your work involves metal filings or particles.
- Implanted port device, such as an insulin pump.
- Metal plate, pins, screws, or surgical staples.
- Joint replacement.
- Metal clips from aneurysm repair.
- Retained bullets.
- Any other large metal objects in your body. Tooth filling and braces are usually fine.
- You will be asked to remove any metal objects such as, jewelry, hearing aids, or glasses.
- You will also be asked to remove all medicine skin patches, such as Duragesic patch. They may contain metal elements and cause skin burns.
- An x-ray may be taken to check for any metal objects in your body.
- Given ear plugs or headphones. The MRI machine makes a loud banging noise.
- Given an injection of contrast dye into your vein.
- Allowed to have a family member or friend with you during the test.
Description of Test
How Long Will It Take?
Will It Hurt?
Call Your Doctor
- Worsening of symptoms
- Any allergic or abnormal symptoms, like getting a rash or swelling if you were injected with contrast dye
United States National Library of Medicine http://www.nlm.nih.gov
Health Canada http://www.hc-sc.gc.ca
Public Health Agency of Canada http://www.phac-aspc.gc.ca
Gould TA. How MRI works. How Stuff Works website. Available at: http://electronics.howstuffworks.com/mri.htm/printable. Accessed March 27, 2013.
Hailey D. Open magnetic resonance imaging (MRI) scanners. Issues Emerg Health Technol. 2006 Nov;(92):1-4.
Kanal E, Barkovich A.J., et al. ACR Guidance Document for Safe MR Practices: 2013. J Magn Reson Imaging. 2013;37(3):501-530.
MRI of the Body (Chest, Abdomen, Pelvis). Radiology Info website. Available at: http://radiologyinfo.org/en/info.cfm?pg=bodymr. Updated April 24, 2012. Accessed March 27, 2013.
1/4/2011 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed: US Food and Drug Administration. New warnings required on use of gadolinium-based contrast agents. US Food and Drug Administration website. Available at: http://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm225286.htm. Updated September 9, 2010. Accessed September 10, 2010.
5/17/2014 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed: Patenaude Y, Pugash D, et al. The use of magnetic resonance imaging in the obstetric patient. J Obstet Gynaecol Can. 2014 Apr;36(4):349-355. Available at: http://sogc.org/wp-content/uploads/2014/04/gui306PPG1404E.pdf.
- Reviewer: Michael Woods, MD
- Review Date: 02/2014 -
- Update Date: 05/17/2014 -