[Application value of FS-3D-FISP sequence in the diagnosis of ankle cartilage injury].

Objective To compare several sequences of MRI and arthroscopy for detecting the ankle articular cartilage lesions and to evaluate the clinical outcome of special sequence of FS-3D-FISP.Methods Forty pailents (41 ankles) with iterative ankle pain who were scheduled for arthroseopy underwent MR scanning.including FS-3D-FISP.FSE T2WI and FSE PDWI sequences.The results of each sequence were then compared with the arthroseopic findings.Results Using arthroscopic results as the standard of reference,the FS-3D-FISP images had the higher sensitivity (92.86%) than the other two sequences.The FS-3D-FISP sequence wag well consistent with the result of arthroacopy. Kappa value (0.7590) was higher than the other two sequences (P<0.01).Conclusion As a favorable scanning sequence,FS-3D-FISP imaging can show the early-stage pathological changes of articular cartilage and it has an excellent correlation with the arthroseopic findings.A 3-D reconstruction is helpful to determine the location and the degree of lesion and obtain a more accurate classification to guide clinical decisions. Key words: Magnetic resonance imaging; Ankle joint; Cartilage diseases; Arthroscopy