Magnetic resonance imaging of sacroiliac joint inflammation

Authors

  • H. Ahlström MD,

    Corresponding author
    1. Departments of Diagnostic Radiology and Internal Medicine, Rheumatology Section, University Hospital, Uppsala, Sweden.
    • Department of Diagnostic Radiology, Akademiska sjukhuset, University Hospital, S-751 85 Uppsala, Sweden
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  • N. Feltelius MD,

    1. Departments of Diagnostic Radiology and Internal Medicine, Rheumatology Section, University Hospital, Uppsala, Sweden.
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  • R. Nyman MD,

    1. Departments of Diagnostic Radiology and Internal Medicine, Rheumatology Section, University Hospital, Uppsala, Sweden.
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  • R. Hällgren MD

    1. Departments of Diagnostic Radiology and Internal Medicine, Rheumatology Section, University Hospital, Uppsala, Sweden.
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Abstract

A consecutive series of 27 patients with symptoms compatible with sacroiliitis underwent magnetic resonance imaging (MRI) of the sacroiliac joints. The diagnostic sensitivity of MRI was similar to that of computed tomography or conventional radiography. However, MRI seems to have the potential of providing unique information about the disease process in sacroiliitis by demonstrating abnormalities in subchondral bone and periarticular bone marrow. The results of this study suggest that early inflammatory changes in sacroiliitis occur in the subchondral structures of the sacroiliac joints.

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