Preparing for MRI

Your MRI Exam

Your MRI exam is one of the most simple and comfortable exams offered. The technologist will ask you to lie on a cushioned table that will move into the tube-shaped magnetic opening once you have been comfortably positioned.

During your MRI exam you won't feel anything. The only thing you'll notice is a knocking or buzzing sound that occurs as the images are being taken. Remaining still during these noises is very important in order to obtain clear images.  You should be provided with earplugs to wear during the scan, or an MRI compatible audio headset may be available to minimize the noise. The length of your exam is dependent on the type of study being done. Many MRI exams are completed in about half an hour.

Your technologist will watch you through an observation window and will be able to communicate with you at all times. If you become uncomfortable at any point, just say so. The MRI staff will be right there to assist you.

When scanning is complete, the technologist will bring you back to the preparation room to collect your belongings.

Frequently Asked Quesitons About MRI

Magnetic Resonance Imaging (MRI) is an advanced imaging method that produces images of the body without surgery or X-rays.  MRI allows doctors to see images of your internal organs and structures in great detail from many angles. MRI uses a large magnet, radio waves, and a computer to produce these images quickly and safely.

Will it hurt?

Since MRI is "non-invasive", the exam is painless. However, your doctor may utilize a contrast agent to better visualize a part of your anatomy. If this is the case, you may receive a simple shot prior to or during the exam.   You will need to remain motionless, but you will not feel anything.  The only sensation you will experience will be a loud knocking or buzzing sound at various intervals throughout your exam.

Does the machine use X-rays?

No. MRI uses a powerful magnet in conjunction with radiofrequency waves to generate images of your internal organs and structures. There is no ionizing (X-Ray) radiation.

How will my body fit in the machine?

That will depend on your height and what part of your body is being scanned. There are very few patients who cannot be comfortably accommodated for an MRI exam. All MRI systems are open at both ends but some also have wider openings on the sides.

The part that is being imaged is in the middle of the magnet.  For example, if your ankle is being scanned, your head will be outside of the MR scanner.  If it is your head, neck, or chest is scanned, your head will be inside of the scanner.  If your head is being scanned, the system uses a special mirror arrangement to allow you to see outside the magnet.

Will I be claustrophobic?

Most people have no reaction at all. However, if you have had claustrophobic reactions to enclosed spaces before, you should let the technologist know. Even if you are uncomfortable in small spaces, staff members can help you complete the study.

Will I be alone?

You will be able to communicate with your technologist at all times by intercom. The technologist is able to see you through a large patient viewing window. In some cases a friend or family member may stay in the scan room with you during your exam. Please consult your MRI facility to learn of their policy on this matter.

Are there things that will prevent me from being scanned?

Some patients with metal implants cannot be safely scanned in the MR environment. People with pacemakers, aneurysm clips, especially in the brain; and neurostimulators generally cannot be scanned. Anyone with surgical pins, shrapnel, plates or other type of metal implants should notify the technologist. You will be required to provide a health history when you arrive for your exam explaining any metallic implants you may have. A doctor will determine if a particular metal implant is approved to be in an MR environment.