MRI
Cardiac Magnetic Resonance Imaging (MRI)
Your doctor has asked that you have a cardiac (heart) MRI. This pamphlet answers some of the questions you may have about the test.
Purpose of the test.
A Magnetic Resonance Imaging (MRI) uses a powerful magnet with radio waves to produce signals that a computer forms into images (pictures) of the heart, lungs and large blood vessels in the chest. The MRI magnet can affect some medical devices, such as pacemakers, or defibrillators. Your doctor will determine whether you can have an MRI done.
Description of the test.
The test is done in the Radiology Department. On arrival, you will be asked to fill in a questionnaire regarding your past medical history. Please be as accurate as possible as it is important for your safety and to get the best possible images. You will change into a hospital gown for the test. An intravenous (IV) line (a thin plastic tube placed in a vein) will be placed in your hand or arm if a contrast (dye) needs to be injected to get better images of your heart or heart structures. You will lie on a narrow table. The table is then moved into the MRI scanner that looks like a tunnel. During the scan, the magnet makes loud knocking and humming noises. These loud noises are normal and should not worry you. You may be asked to wear earplugs or headphones to protect your hearing. You will be asked to remain perfectly still during the time the scanner is taking pictures. You may be allowed to move slightly. The MRI staff will advise you of this. You may also be asked to hold your breath for some of the pictures. Please do your best to follow all instructions given by the MRI staff.
The scan is painless, except for the needle prick of the IV if a contrast injection is needed.
During your MRI test, the MRI staff and doctor will be able to talk to you, hear you, and see you at all times. Let them know if you have any questions or feel anything unusual.
When the MRI test is over, you may be asked to wait until the doctor reviews the images. The MRI staff will let you know if more pictures are needed.
How long will the test take?
The test will take about 2 hours. Allow 3 hours for parking in case of delay.
What preparation is required?
Notify your doctor if you are pregnant. Pregnant women are advised to stay away from the MRI room because it is not known what effect the magnetic waves have on the baby.
Continue to take any medication prescribed by your doctor unless otherwise directed.
DO NOT wear any metal on your body or clothing as it may be attracted to the MRI magnet. This may include:
- Hair barrettes, hairpins
- Clothing that has a metal zipper, buttons, snaps, hooks, under wires, or metal threads
- Hearing aids
- Metal jewelry, watches, all pierced jewelry must be removed
- Shoes, belt buckles, safety pins
- Purse, wallet, money clip, credit cards, cards with magnetic strips
- Electronic devices such as beepers or cell phones
- Pens, paper clips, keys, coins
After the test.
You can resume your regular activities.
Where do I go for the test?
Radiology Department, 2nd Floor, Providence II Building
Phone Number: 604-806-8437