What are the risks of cardiac magnetic resonance imaging?
-
Dr. William D. Knopf of Piedmont Heart Institute answered:Cardiac magnetic resonance imaging (MRI) produces no side effects from the magnetic fields and radio waves. This method of taking pictures of organs and tissues doesn't carry a risk of causing cancer or birth defects.Serious reactions to the contrast agent used for MRI are very rare. However, side effects are possible and include the following:
- Headache
- Nausea (feeling sick to your stomach)
- Dizziness
- Changes in taste
- Allergic reactions
If your cardiac MRI includes a stress test, more medicines will be used during the test. These medicines may have other side effects that aren't expected during a regular MRI scan, such as:
- Arrhythmias (ah-RITH-me-ahs), or irregular heartbeats
- Chest pain
- Shortness of breath
- Palpitations (feelings that your heart is skipping a beat, fluttering, or beating too hard or fast)
This answer from the National Heart, Lung and Blood Institute has been reviewed and/or edited by Dr. William D. Knopf.
Cardiac magnetic resonance imaging (MRI) produces no side effects from the magnetic fields and radio waves. This method of taking pictures of organs and tissues doesn't carry a risk of causing cancer or birth defects. Serious reactions to the... More -
Healthwise answered:There are no known harmful effects from the strong magnetic field used for MRI. But the magnet is very powerful. The magnet may affect pacemakers, artificial limbs and other medical devices that contain iron. The magnet will stop a watch that is close to the magnet. Any loose metal object has the risk of causing damage or injury if it gets pulled toward the strong magnet.
Metal parts in the eyes can damage the retina. If you may have metal fragments in the eye, an X-ray of the eyes may be done before the MRI. If metal is found, the MRI will not be done.
Iron pigments in tattoos or tattooed eyeliner can cause skin or eye irritation.
An MRI can cause a burn with some medication patches. Be sure to tell your health professional if you are wearing a patch.
There is a slight risk of an allergic reaction if contrast material is used during the MRI. But most reactions are mild and can be treated using medicine. There also is a slight risk of an infection at the IV site.
There are no known harmful effects from the strong magnetic field used for MRI. But the magnet is very powerful. The magnet may affect pacemakers, artificial limbs and other medical devices that contain iron. The magnet will stop a watch... More
