低场磁共振对关节软骨损伤的评价及与关节镜检查结果对照  

Role of Low Field MR in Diagnosis of Articular Cartilage Injury of Knee and Its Comparision with Arthroscopy

作　　者：刘园园[1] 黄惠珍[1] 凃茜[2] 

机构地区：[1]广东省中医院影像科,广州510120 [2]武汉市第一医院磁共振室,武汉430022

出　　处：《放射学实践》2009年第4期430-433,共4页Radiologic Practice

摘　　要：目的:探讨低场磁共振在关节软骨损伤影像诊断中的应用价值及其可行性。方法:30例有膝关节损伤病史的青少年患者,使用AIRIS-Ⅱ0.3T永磁开放式磁共振扫描仪,采用SE序列T1WI、水脂分离成像(FatSepG)序列对患侧膝关节行矢状面及冠状面扫描。MRI扫描后3周内行关节镜检查或手术治疗。结果:①FatSepG序列对关节软骨损伤的诊断与关节镜检查结果具有较好的一致性,Kappa值为0.8693>0.75。②在29个异常观察面中有15个出现软骨面下骨质及骨髓内异常信号,占总病变部位的51.7%。结论:FatSepG序列是低场磁共振机诊断关节软骨损伤的最佳序列,但不能作为唯一检查序列,必须与其他序列检查相结合;关节软骨下骨面缺损及骨髓信号异常对关节软骨损伤有很好的提示作用。Objective：To probe the value and feasibility of low field MR in the diagnosis of articular cartilage injury of knee in clinical testing. Methods：30 young men were all scanned by SE sequence and FatSepG sequence to do sagittal and coronary scanning for all injuried knee joints, using Hitachi 0.3T AIRIS-Ⅱ MR scanner. In 3 weeks all of them underwent arthroscopy or opertation. Results：FatScpG showed the coherence for the MRI diagnosis of articular carlilage injury and the result of arthroscopy,the data of Kappa being 0. 8693 -0. 75. Among 29 inspection sides, there were 15 inspection sides having abnormal signals at subcondral bone and marrow,accounting for 51.7% of the total lesion areas. Conciusion：FatSepG is the best sequence for diagnosing articular cartilage injury but can not be an exclusive inspecting sequence,it needs to be combined with other sequences. Abnomal signal in the subchondral bone and marrow is an important indirect sign of articular cartilage injury.

关 键 词：软骨 关节 创伤和损伤 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R681.3[医药卫生—诊断学]