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</div><div><span>Arm MRI scan</span></div></div>
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</a><h1 class="with-also" itemprop="name">Arm MRI scan</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>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.</p><p>It does not use radiation (x-rays).</p><p>Single MRI images are called slices. The images can be stored on a computer or printed on film. One exam produces many images.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>How the Test is Performed</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>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. MRI can pull on any metallic objects. Some types of metal can cause blurry images.</p><p>You will lie on a narrow table that slides into a large tunnel-like scanner.</p><p>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.</p><p>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.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>How to Prepare for the Test</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>You may be asked not to eat or drink anything for 4 to 6 hours before the scan.</p><p>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.</p><p>Before the test, tell your provider if you have:</p><ul><li>Brain aneurysm clips</li><li>Certain types of artificial heart valves</li><li>Heart defibrillator or pacemaker</li><li>Inner ear (cochlear) implants</li><li>Kidney disease or dialysis (you may not be able to receive contrast)</li><li>Recently placed artificial joints or surgery with metal plates and screws</li><li>Certain types of vascular <a test="test" href="./002303.htm">stents</a></li><li>Worked with sheet metal in the past (you may need tests to check for metal pieces in your eyes) </li></ul><p>Because the MRI contains strong magnets, metal objects are not allowed into the room with the MRI scanner:</p><ul><li>Pens, pocketknives, and eyeglasses may fly across the room.</li><li>Items such as jewelry, watches, credit cards, and hearing aids can be damaged.</li><li>Pins, hairpins, metal zippers, and similar metallic items can distort the images.</li><li>Removable dental work should be taken out just before the scan. </li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>How the Test will Feel</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>An MRI exam causes no pain. You will need to lie still. Too much movement can blur MRI images and cause errors.</p><p>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.</p><p>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.</p><p>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.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Why the Test is Performed</h2></div><div class="section-button"><button type="submit" aria-controls="section-4" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-4"><p>This test provides clear pictures of parts of the arm that are hard to see clearly on CT scans.</p><p>Your provider may order this test if you have:</p><ul><li>A mass that can be felt on a physical exam</li><li>An abnormal finding on an x-ray or bone scan</li><li>Arm pain and a history of cancer</li><li>Arm or wrist pain that does not get better with treatment</li><li>Bone infection (osteomyelitis)</li><li>Bone pain and fever</li><li>Broken bone</li><li>Decreased motion or "locking up" of the wrist or elbow joint</li><li>Redness or swelling of the wrist or elbow joints </li><li>Injuries to the cartilage and ligaments</li><li>Deformity to allow your physician assess the condition better</li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Normal Results</h2></div><div class="section-button"><button type="submit" aria-controls="section-5" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-5"><p>A normal result means your arm looks OK.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>What Abnormal Results Mean</h2></div><div class="section-button"><button type="submit" aria-controls="section-6" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-6"><p>Abnormal results may be due to:</p><ul><li>Degenerative changes due to age</li><li>Abscess</li><li><a test="test" href="./000419.htm">Bursitis</a> of the elbow or wrist</li><li><a test="test" href="./000001.htm">Broken bone</a> or fracture</li><li>Ganglion cyst in the wrist</li><li>Infection in the bone</li><li>Ligament, tendon, or cartilage injury in the wrist or elbow</li><li>Muscle damage</li><li>Osteonecrosis (avascular necrosis)</li><li>Tumor or cancer in the bone, muscle, or soft tissue </li></ul><p>Talk to your provider if you have questions and concerns.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Risks</h2></div><div class="section-button"><button type="submit" aria-controls="section-7" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-7"><p>MRI uses no radiation. There have been no reported side effects from the magnetic fields and radio waves.</p><p>It is also safe to have MRI performed during pregnancy. No side effects or complications have been proven.</p><p>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.</p><p>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. </p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Considerations</h2></div><div class="section-button"><button type="submit" aria-controls="section-8" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-8"><p>Tests that may be done instead of an MRI of the arm include:</p><ul><li><a test="test" href="./007347.htm">CT scan of the arm</a></li><li><a test="test" href="./003810.htm">Arm x-ray</a></li></ul><p>A CT scan may be preferred in an emergency. The test is faster than MRI and often available in the emergency room.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Alternative Names</h2></div><div class="section-button"><button type="submit" aria-controls="section-Alt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Alt"><p>MRI - arm; Wrist MRI; MRI - wrist; Elbow MRI; MRI - elbow</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>References</h2></div><div class="section-button"><button type="submit" aria-controls="section-Ref" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Ref"><p>Anderson MW, Fox MG. MRI of the arm. In: Anderson MW, Fox MG, eds. <em>Sectional Anatomy by MRI and CT.</em> 4th ed. Philadelphia, PA: Elsevier; 2017:chap 4.</p><p>Kapoor G, Toms AP. Current status of imaging of the musculoskeletal system. In: Adam A, Dixon AK, Gillard JH, Schaefer-Prokop CM, eds. <em>Grainger & Allison's Diagnostic Radiology. </em>7th ed. Philadelphia, PA: Elsevier; 2021:chap 38.</p></div></div></section>
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