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  • Title: Extremity-dedicated low-field MRI shows good diagnostic accuracy and interobserver agreement for the diagnosis of the acutely injured knee.
    Author: Bürk J, Vicari M, Dovi-Akué P, Benndorf M, Fritz B, Lenz P, Niemeyer P, Baumann T.
    Journal: Clin Imaging; 2015; 39(5):871-5. PubMed ID: 26099793.
    Abstract:
    OBJECTIVES: To estimate diagnostic accuracy and interobserver agreement of extremity-dedicated low-field magnetic resonance imaging (lfMRI) for meniscal tears, anterior cruciate ligament (ACL) tears and knee fractures. METHODS: We enrolled 62 patients with acute knee trauma and 19 patients with suspected knee fracture. Arthroscopy/Computed tomography was regarded the gold standard for cruciate ligament and meniscal tears/fractures. RESULTS: Arthroscopy showed 39 meniscal tears. Sensitivity/Specificity of lfMRI was 95.8%/97.4% (reader 1)/100%/100% (reader 2) for medial and 93.3%/100% (reader 1)/93.3%/93.6% (reader 2) for lateral meniscal tears. Sensitivity/Specificity was 100% for ACL tears and fractures. Interobserver agreement was very good. CONCLUSION: lfMRI showed reproducible high sensitivity and specificity for the diagnosis of the acutely injured knee.
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