What is an MRI?
Magnetic resonance imaging, or MRI, is a diagnostic testing procedure that uses magnetic fields to create images of your body. It is a painless, non-invasive way of obtaining detailed information to help your physician evaluate your health. An MRI does not use any type of radiation to create images.
What happens during the exam?
A technologist will interview you prior to entering the MRI room. This questioning is for your safety prior to entering this strong magnetic field. A complete list of questions will be asked, such as surgical history, metal in your clothes, removal of watches, credit cards, etc.
You will be asked to lie down on the scanner table. The scanning bed is then moved into the MRI machine. MRI machines are designed to be in close contact with the body part that is being scanned.
The MRI scanner contains a very strong magnet. This magnet creates radio waves that pass through your body. The machine measures the body’s response to the waves and creates an image.
It is very important the you hold still during the exam. The MRI scanner can be very noisy, so if you have sensitive hearing, you may request earplugs prior to the scan, bring your own music CD, or listen to music from MRI stereo system.
What is the preparation for the exam?
Please arrive 15– 20 minutes prior to your appointment.
What should I wear?
Comfortable clothing that is metal free, do not wear jewelry, metal objects, eyeglasses or dental pieces during the exam. Let your physician know if you have a history of exposure to metalwork shavings or have had bullet wounds.
Are there any risks?
There are no known risks associated with MRI. If you have a pacemaker or metal aneurysm clips in your body, you will not be allowed to have the scan. Those patients that are pregnant, have artificial heart valves or any type of surgical implants must consult your doctor and the MRI department.
Is the magnet safe?
Yes, in order to ensure your safety, you will be examined and questioned thoroughly to make sure you have no metal in your body.
During the exam, will I feel the magnet?
No, you will not feel the magnetic field, but you will hear a loud knocking noise during your exam.
How long does an MRI take?
It may take an average of 30-60 minutes, depending on what your physician has ordered.