【摘要】 目的:探讨膝关节MR不同成像方位对前交叉韧带(anterior cruciate ligament,ACL)撕裂的诊断价值,重点探讨横断位T2WI对ACL显示及撕裂的诊断价值。方法:回顾性分析2005年10月～2007年7月间192例膝关节创伤患者MR扫描图像资料,由两位放射诊断医生分析横断位、斜矢状位及斜冠状位T2WI图像对ACL撕裂评价的准确性。结果:192例膝关节创伤患者中关节镜证实ACL损伤23例(n=23)。两名读片医生对ACL损伤评价准确性于横断位为91.7%和88.5%,斜矢状位为92.7%和93.8%,斜冠状位为95.8%和94.3%。三种成像方位对ACL损伤评价的准确性差别无统计学意义,两位读片医生读片一致性检验kappa值横断位、斜矢状位及斜冠状位分别为0.754、0.764和0.867。结论:ACL及其损伤能在T2WI横断位、斜矢状位及斜冠状位三种成像方位上清晰显示,其中横断位T2WI为膝关节扫描常规扫描方位,其价值应得到重视。更多还原

【Abstract】 Objective:To investigate to value of different MR imaging planes in diagnosis of anterior cruciate ligament (ACL) tears, emphasizing on axial plane.Methods:192 patients with knee trauma underwent MR imaging. Axial, parasagital and paracoronal T2-weighted images were retrospectively analyzed by two diagnostic radiologists.Results:23 ACL tears were confirmed at arthroscopy. Accuracy of two radiologists was 91.7% and 88.5%in the axial plane, 92.7% and 93.8%in the parasagital plane, 95.8% and 94.3%in the paracoronal plane. The difference between each plane was no sttastics. Interobserver agreement was 0.754 for the axial, 0.764 for the sagittal, 0.867 for the paracoronal plane.Conclusion:ACL tears can be detected on axial, parasagital and paracoronal plane images. For axial plane is the most common and important imaging plane, its value should be recognized.更多还原