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    Magnetic Resonance Imaging (MRI) of the Shoulder

    Magnetic resonance imaging (MRI) is a test done with a large machine that uses a magnetic field and pulses of radio wave energy to make pictures of the shoulder. Muscles, ligaments, cartilage, and other joint structures are best seen with an MRI. In many cases MRI gives information about structures in the body that can't be seen as well with an X-ray, ultrasound, or CT scan.

    For an MRI test, you are placed inside the magnet so that your shoulder is inside the strong magnetic field. MRI can find changes in the structure of organs or other tissues. It also can find tissue damage or disease, such as infection or a tumor. Pictures from an MRI scan camera.gif are digital images that can be saved and stored on a computer for further study. The images also can be reviewed remotely, such as in a clinic or an operating room. Photographs or films of selected pictures can also be made.

    In some cases, a contrast material may be used during the MRI scan to show certain structures more clearly in the pictures. The contrast material may be used to check blood flow, find some types of tumors, and show areas of inflammation or infection. The contrast material may be put in a vein (IV) in your arm or directly into your shoulder joint.

    You may be able to have an MRI with an open machine camera.gif that doesn't enclose your entire body. But open MRI machines aren't available everywhere. The pictures from an open MRI may not be as good as those from a standard MRI machine camera.gif.

    Why It Is Done

    Magnetic resonance imaging (MRI) of the shoulder is done to:

    • Check unexplained shoulder pain.
    • Find problems in the shoulder, such as arthritis, bone tumors, worn-out cartilage, torn ligaments, torn tendons, or infection. An MRI can detect tears in the cartilage (labrum) in the shoulder. Labral tears often are caused by injury and can lead to shoulder pain.
    • Find rotator cuff disorders, including tears and impingement.

    MRI may also help diagnosis a bone fracture when X-rays and other tests are not clear. MRI is done more commonly than other tests to check for certain bone and joint problems.

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    WebMD Medical Reference from Healthwise

    Last Updated: September 09, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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