MRI (MAGNETIC RESONANCE IMAGING)

MRI stands for magnetic resonance imaging. The procedure uses a strong magnetic field and radio frequency waves to create a picture of body tissues. MRI can take pictures from angles that are difficult with CT scans and can produce images of the heart in motion. MRI may be used in place of CT scans or to evaluate tissue in ways that CT scans cannot do.

MRI is used to evaluate:

brain tumors, infections, and excess fluid
spinal cord disorders
nerve disorders, such as multiple sclerosis
problems with joints
bony and soft tissue tumors
diseases of blood vessels
irritation and infection in bones or other tissues and
problems with the adrenal glands, kidneys, prostate, and bladder

The test will normally not be given to pregnant women or people with pacemakers. The test usually takes 30 to 45 minutes. While the person may stay dressed in a hospital gown, all metal objects must be removed. This includes jewelry, hearing aids, glasses, dentures, belts, and bras with wire in them. The healthcare provider must be told if there is any metal in the body such as plates or screws from a previous surgery.

The person lies on a bed that slides into a small tunnel. Open MRIs are available for patients with claustrophobia, or a mild sedative may be given to these patients. The patient must remain still during the scan. The scanner makes a lot of loud clicking and whirring noises, and earplugs or headphones may be provided. On occasion, examiners must inject a dye into the patient's vein to better visualize certain tissues.

Normal activity may be resumed after the test.

Disclaimer: This content is reviewed periodically and is subject to change as new health information becomes available. The information provided is intended to be informative and educational and is not a replacement for professional medical evaluation, advice, diagnosis or treatment by a healthcare professional.

HIL File TEST3242.RF2 VRS# 6440 Data Version 7.0