What is a MRI?

Magnetic Resonance Imaging (MRI) is a diagnostic imaging technique that combines a powerful magnetic field with computer technology to produce detailed images of your body's soft tissue (organs, muscles, and fat).

Certain atoms in our cells respond slightly in the presence of magnetic fields. MRI is able to use that response to create an amazingly clear, detailed computer representation of internal organs, muscles, connective tissue, and the central nervous system.

Using cross-sectional imaging of the body along multiple planes (like slices of bread), the clarity of these images is far greater than is available with conventional CT scans, X-rays, or even myelograms, allowing your physician to make an earlier and more accurate diagnosis.

MRI is noninvasive (except in cases where contrast agents are injected), and doesn't expose patients to radioactive materials, X-ray, or any form of ionizing radiation. To the best of our knowledge, MRI produces no harmful side effects.

What happens during an MRI scan?

Upon your arrival at the Billings MRI Center, you will be welcomed by a friendly, knowledgeable staff that will obtain insurance information and answer any questions you may have.



This is followed by a brief interview with an MRI technologist, who will discuss the procedure with you and confirm that you have no metal implants or other conditions that could interfere with the scan.

After discussing the exam with your technologist, you'll recline comfortably on a cushioned table and your exam will begin. Depending on what information your doctor needs, your MRI scan may require the use of an intravenously injected contrast, which will assist in visualizing certain structures in your body. You will be in constant communication with your technologist throughout the entire exam.

As the MRI scanner calibrates to obtain each series of images, you will hear persistent buzzing and thumping noises, but at no time will you experience any physical sensation or discomfort. You will wear earplugs during your exam.

While the pictures or images are being recorded, all you have to do is lie still and follow the technologist's simple instructions. The images obtained from your MRI are very sensitive to motion. Even the slightest movement can distort the image and limit its diagnostic value. As a result, it is important for you to remain as still as possible during your scan.

Most MRI exams last 20-40 minutes, although compound studies may take longer. After your MRI, you may return home or to work.

My doctor ordered contrast with my exam?

During an MRI examination, there may be a need for contrast to be administered to the patient. The material injected is the element, Gadolinium. In MRI, the Gadolinium reacts to the magnetism and radio waves allowing certain diseases, surgical scar and anatomy to become visible.

How do I obtain results of the scan?

After you leave, your images are interpreted by a radiologist, a doctor who specializes in reading MRI. Within the next few days, your physician will receive results of your study. Your physician will then contact you to discuss your results and, if necessary, prescribe treatment. Your physician is the only person authorized to discuss your MRI results with you.

What if I am claustrophobic?

Patients that are too claustrophobic to undergo an MRI scan do have options. Many of our claustrophobic patients obtain a prescription for a mild sedative from their physician and have a family member drive them to and from their exam. If you prefer, a friend, or family member may sit in the room with you to provide support throughout your scan after he or she is screened for metal on or in the body. Please let us know before your appointment, if you have a concern of possibly being claustrophobic.

Are MRI's very noisy?

When a patient is ready to have their MRI scan, they are given ear plugs. The ear plugs will help quiet the sound. Click below to listen to what an MRI sounds like.

Sound of a MRI