Magnetic Resonance Imaging

What is an MRI?

A Magnetic Resonance Imaging exam is one of the easiest and most comfortable diagnostic procedures available. This non-invasive, painless procedure uses radio waves and powerful magnets linked to a computer to create detailed pictures of internal organs and tissues. Each MRI test produces hundreds of pictures from many angles by photographing individual "slices" of a body part.

Why is an MRI done?

An MRI lets health care professionals look inside your body to help diagnose many potential problems such as cancer, heart and vascular disease, stroke, breast disease, and joint and musculoskeletal disorders. Internal organs can be checked for pathologies such as brain injuries, aneurysms, stroke, tumors, inflammation, or other trauma. MRI can be used to check vertebrae or disc problems and to see the structure of the heart and aorta. It also can provide valuable information about glands, organs, joints, soft tissues and bones.

How do I prepare?

Although no special preparation is needed, you may be asked not to eat or drink anything prior to your exam. Please bring your doctor’s order for the test and a list of current medications.

What happens when I arrive for my test?

You will be asked to complete a questionnaire that asks if you have--

• had any surgeries
• a pacemaker
• aneurysm clips
• metal fragments in your eyes or body
• an implanted drug infusion devise
• an injury by bullet or shrapnel
• metallic plates, pins, screws or other implants
• an IUD (Intrauterine Device)
• tattoos or permanent makeup
• a transdermal patch, nicotine or hormone patch
• had a previous MRI exam
• any other implant or health condition that could impact your MRI
• a reason to believe you may be pregnant

Then, you will change into a gown and be asked to remove jewelry, watch, hairpins, bobby pins, hearing aids, removable dental work and glasses.

Once you are ready, the technologist will position you on the sliding table that moves into the MRI machine during your exam. A special coil may be placed over the area to be examined to improve image quality.

The technologist will be glad to answer any other questions you may have regarding the MRI.

What happens during the test?

The MRI machine will go through a series of scanning sequences, making various noises as it works. You will be asked not to move during the actual imaging process. A contrast agent may be used to enhance the visibility of certain tissues or blood vessels.

What are the risks?

MRI tests are very common-10 million people have one each year. It is an extremely safe and painless procedure that does not use radiation.

Will I be comfortable?

The test usually takes 30-45 minutes. Due to the loud machine sounds, you will be offered ear plugs or music headphones during your exam. The size of the MRI equipment and being in a confined space may affect some claustrophobic people. If you have claustrophobia, please speak to your doctor for additional options.

An open MRI, designed to accommodate patients unable to use the regular closed MRI due to size, claustrophobia, age or other physical limitations, is available at DMH South Shores Imaging Center.

Who sees the results?

A radiologist, a physician trained to read MRI tests and other radiology examinations, will analyze the images and send a report to the physician who ordered the test. Your physician will share the results with you.

How do I get more information?

For more information about MRI testing at DMH, call 217-876-2300.

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