MRI - arm; Wrist MRI; MRI - wrist; Elbow MRI; MRI - elbow
An arm MRI (magnetic resonance imaging) scan uses strong magnets to create pictures of the upper and lower arm. This may include the elbow, wrist, hands, fingers, and the surrounding muscles and other tissues.
It does not use radiation (x-rays).
Single MRI images are called slices. The images can be stored on a computer or printed on film. One exam produces many images.
You will wear a hospital gown or clothes without metal zippers or snaps (such as sweatpants and a t-shirt). Make sure you take off your watch, jewelry, and wallet. Some types of metal can cause blurry images.
You will lie on a narrow table that slides into a large tunnel-like scanner.
Some exams use a special dye (contrast). Most of the time, you will get the dye through a vein in your arm or hand before the test. The dye helps the radiologist see certain areas more clearly.
During the MRI, the person who operates the machine will watch you from another room. The test most often lasts 30 to 60 minutes, but may take longer.
You may be asked not to eat or drink anything for 4 to 6 hours before the scan.
Tell your health care provider if you are afraid of closed spaces (have claustrophobia). You may be given a medicine to help you feel sleepy and less anxious. Your provider may suggest an "open" MRI, in which the machine is not as close to the body.
Before the test, tell your provider if you have:
Because the MRI contains strong magnets, metal objects are not allowed into the room with the MRI scanner:
An MRI exam causes no pain. You will need to lie still. Too much movement can blur MRI images and cause errors.
The table may be hard or cold, but you can ask for a blanket or pillow. The machine makes loud thumping and humming noises when turned on. You can wear ear plugs to help block out the noise.
An intercom in the room allows you to speak to someone at any time. Some MRIs have televisions and special headphones to help the time pass.
There is no recovery time, unless you were given a medicine to relax. After an MRI scan, you can return to your normal diet, activity, and medicines.
This test provides clear pictures of parts of the arm that are hard to see clearly on CT scans.
Your provider may order this test if you have:
A normal result means your arm looks OK.
Abnormal results may be due to:
Talk to your provider if you have questions and concerns.
MRI contains no radiation. There have been no reported side effects from the magnetic fields and radio waves.
It is also safe to have MRI performed during pregnancy. No side effects or complications have been proven.
The most common type of contrast (dye) used is gadolinium. It is very safe. Allergic reactions to the substance are rare. However, gadolinium can be harmful to people with kidney problems that need dialysis. If you have kidney problems, please tell your provider before the test.
The strong magnetic fields created during an MRI can cause heart pacemakers and other implants to not work as well. It can also cause a piece of metal inside your body to move or shift. For safety reasons, please do not bring anything that contains metal into the scanner room.
Tests that may be done instead of an MRI of the arm include:
A CT scan may be preferred in an emergency. The test is faster than MRI and often available in the emergency room.
Anderson MW, Fox MG. MRI of the arm. In: Anderson MW, Fox MG, eds. Sectional Anatomy by MRI and CT. 4th ed. Philadelphia, PA: Elsevier; 2017:chap 4.
Kapoor G, Toms AP. Current status of imaging of the musculoskeletal system. In: Adam A, Dixon AK, Gillard JH, Schaefer-Prokop CM, eds. Grainger & Allison's Diagnostic Radiology. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 38.BACK TO TOP
Review Date: 6/13/2021
Reviewed By: C. Benjamin Ma, MD, Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery, San Francisco, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
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