What Is an MRI?
An MRI is short for Magnetic Resonance Imaging. This test is different from an x-ray because it makes a picture of your body's organs and tissues without exposing you to radiation. An MRI uses a powerful magnetic field and a kind of radio frequency energy that makes computerized pictures.
Before the actual test, you will be asked to lie down on a narrow bed. Once you are comfortable the technician will gently push the bed inside a "doughnut" shaped tube. It will be important to lie as still as possible during the test. The technician will guide you through each step.
The MRI test is painless, however sometimes it is necessary to have an injection, also called "contrast" before the test. This usually is a very minor discomfort - a quick prick that doesn't take too long. Once in the tube you will hear a series of knocking sounds. It's particularly important to lay quietly while you are hearing the noises because the machine is making the images.
You may be allowed to bring a favorite CD or you can ask if there is a collection of CDs to choose from. Listening to music will help the time go by (which is usually about 20 minutes or so).
After the MRI, you will be okay to go back to your daily activities, unless you required special medication to make you drowsy during the procedure. Your doctor will be in touch with you when the results are available.
If you are scheduled to have an MRI at Children's Hospital, Boston and would like more information, you can click here: MRI Information.
Updated 3/12/06
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