About Open MRI

Magnetic Resonance Imaging (MRI) uses a magnetic field and radio waves instead of X-ray to display many parts of the body, especially the brain, spine and joints. Our open MRI has clear, unobstructed space on three sides, so you can see and talk to our staff during the exam. That means a more pleasant experience for you.

What Is the Exam Like?

The exam usually takes 30 to 60 minutes. It consists of several image exposures lasting 10 to 15 minutes each. You’ll be asked to remove your make-up, eyeglasses, watch, jewelry, credit cards, dentures, hearing aids and any other metallic objects you are carrying.

Then, the technologist will help you lie down on a cushioned table. A device called a “coil” will be placed over or under you. It helps the MRI system create a clear picture of your body. When you are comfortably positioned, the table will move under the magnet. The technologist will then step into the control area, while staying in constant contact with you both visually and through an intercom.

As the exam proceeds, you will hear a muffled thumping sound for several minutes at a time. Other than the sound, the MRI creates no bodily sensation. Relax and try to lie as still as possible. Any movement during this time will blur the picture. When the exam is finished, the technologist will help you off the table.

Do I Need to Prepare for the Exam?

No special preparation is needed. Eat normally and take medication as usual, unless your doctor has given you other instructions. You may find it easier to relax if you avoid drinking coffee or other caffeinated beverages before the exam.

What Are MRIs?

MRIs use magnets and radio waves that bounce off water and fat molecules within the body. Gathered information is then transmitted to a machine that “decodes” the message and creates pictures of internal body tissues.

MRIs are a common choice for diagnosing issues related to joints, brain, heart and blood vessels, wrists and ankles, and breasts. Here MRIs have a certain edge over CT scans in the quality of details. Unlike CT scans, MRIs do not use radiation, but they are somewhat noisy, slower, and claustrophobic, which may cause anxiety. Besides, because of their strong magnets MRIs may not be safe for some candidates including those with aneurysm clips (unless the clips are MRI-safe), cardiac pacemakers or defibrillators, any metal parts or shaving inside the body (strong magnets will pull them out). Apart from those limitations, MRI scans are safe, painless and have no ill effects on the body.

What Are CT Scans?

Computer tomography scans combine a series of X-ray images taken at a variety of angles to produce a more detailed picture than a regular X-ray. CT scans are preferred for diagnosing internal injuries of bones, blood vessels and soft tissues. They are especially useful for diagnosing the area and extent of damage that came from car accidents, sport traumas and similar high-impact physical events. CT scans are also used for detecting traumas and tumors within bones and muscles, blood clots, cancer, internal bleedings, as well as for guiding during surgeries, biopsies, etc.

Even though CT scans are less detailed than MRIs, they are quicker, cheaper, more comfortable for patients (not as noisy and feel less “confined”) and don’t have so many safety limitations, although CT scans should be avoided by pregnant women.

The Takeaway

Although it will be up to your doctor to choose an imaging technique for you, you should ask questions and share any concerns you might have to make sure their choice is right for you.