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Home / What Makes the Myositis Center Unique / Diagnosis of Myositis / Diagnostic Tests for Myositis / MRI Testing of the Muscles

MRI Testing of the Muscles

MRI, or magnetic resonance imaging, is a medical test that uses biological magnets and a computer to create pictures of the inside of the body.  These pictures then aid doctors and specialist in determining injuries or diseases.  The MRI is sometimes compared to the CT (Computed Tomography), which uses similar technology to create cross-sectional images of the body.

What to expect during the test

When a person is in the tube of the MRI, they will hear a loud, banging noise.   This banging noise heard by the patient is caused by the radio waves switching on and off at a very rapid pace.  This creates the pictures that doctors can then study.

Preparation

There is no preparation for an MRI exam, but you must be sure to tell the technologist if you have any metal in your body.  You must also remove all your jewelry and watches.  This is VERY important, as the MRI contains a large magnet and wearing metal inside the MRI is very dangerous.

Risks

The risks of MRI exams are minimal.

Results

Your doctors will receive copies of your MRI results, and will interpret them within the context of your complete evaluation.  Often, the results of MRI studies will be available when you meet with your Myositis Center doctor.

More Diagnostic Tests:

  • Electromyography (EMG) and nerve conduction studies (NCS)
  • Muscle Biopsy
  • Pulmonary Function Tests
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All information contained within the Johns Hopkins Rheumatology website is intended for educational purposes only. Physicians and other health care professionals are encouraged to consult other sources and confirm the information contained within this site. Consumers should never disregard medical advice or delay in seeking it because of something they may have read on this website.

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