The accuracy of MRI-determined synovial membrane and joint effusion volumes in arthritis. A comparison of pre- and post-aspiration volumes.

Bidragets oversatte titel: The accuracy of MRI-determined synovial membrane and joint effusion volumes in arthritis. A comparison of pre- and post-aspiration volumes.

Mikkel Østergaard, M Stoltenberg, O Henriksen, I Lorenzen

    39 Citationer (Scopus)

    Abstract

    Magnetic resonance imaging (MRI) of 18 knees of patients with arthritis was performed before and immediately after arthrocentesis. Pre- and post-aspiration volumes were calculated by adding the outlined areas of synovium/effusion from a continuous series of gadolinium-DTPA-enhanced 5 mm transversal T1-weighted MR-images. The difference between MRI-determined and syringe-determined volumes of aspirated joint fluid was 0-7 ml, median 2 ml, corresponding to 0-18%, median 7%, of the pre-aspiration effusion volume. Synovial membrane volumes, determined before and after arthrocentesis varied 0-10 ml, median 3 ml (0-17%, median 7%). No significant systematic misinterpretation of the borderline between joint fluid and synovium was found. We conclude that effusion volumes and in all probability also synovial membrane volumes, can be determined by MRI with a maximal analytical error of approximately 20%. The acceptable accuracy of the method encourages further studies of the value of effusion and synovial membrane volumes as markers of the activity and/or severity of joint inflammation.
    Bidragets oversatte titelThe accuracy of MRI-determined synovial membrane and joint effusion volumes in arthritis. A comparison of pre- and post-aspiration volumes.
    OriginalsprogEngelsk
    TidsskriftScandinavian Journal of Rheumatology
    Vol/bind24
    Udgave nummer5
    Sider (fra-til)305-311
    Antal sider7
    ISSN0300-9742
    StatusUdgivet - 1995

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