摘要
目的以关节镜为金标准,评价经过改良的脂肪抑制三维真实稳态自由进动序列(FS-3D-TrueFISP)对于膝关节软骨缺损性病变的诊断价值。方法采用经过改良的FS-3D-TrueFISP序列及脂肪抑制三维快速小角度激发序列(FS-3D-FLASH)对21例膝关节病变患者进行检查,其中13例患者同时行脂肪抑制快速自旋回波质子密度加权序列(FS-FSE-PDWI)扫描,将各序列诊断结果与关节镜分级诊断结果相对照。结果与关节镜结果相对照FS-3D-TrueFISP序列对于软骨缺损行病变的敏感性、特异度及表示准确度的Kappa值分别为83.3%、99.2%、0.77;FS-3D-FLASH序列相应各值分别为80.5%、97.7%、0.68;FS-FSE-PDWI序列分别为57.1%、97.6%、0.60。结论经过合理改良后的FS-3D-TrueFISP序列对于膝关节软骨缺损性病变具有较高的敏感性,应用这一技术有助于膝关节软骨缺损性病变的诊断。
Objective To evaluate the value of improved fat-suppressed-3D-true fast imaging with steady-state precession （FS-3D-TrueFISP） sequence for detecting hyaline cartilage defects of knee joint, using arthroscopy as the gold standard. Methods Twenty-one patients were imaged with fat-suppressed-3D-fast low angle shot （FS-3D-FLASH） sequence and FS- 3D-TrueFISP sequence with improved imaging parameters, and 13 patients imaging with fat-suppressed-fast spin echo-proton density weight image （FS-FSE-PDWI） sequence at same time, then compared the imaging findings with arthroscopy. Results Comparing with arthroscopy, the sensitivity, specificity and Kappa were 83.3%, 99.2% and 0. 77 respectively with FS- 3D-TrueFISP; 80. 5%, 97.7% and 0.68 respectively with FS-3D-FLASH sequence; 57.1%, 97.6% and 0. 60 respectively with FS-FSE-PDWI sequence. Conclusion The improved FS-3D-TrueFISP sequence has higher sensitivity for detecting hyaline cartilage defects in knee joint. Use of this technique may strengthen the role of MR imaging for detecting hyaline cartilage defects.
出处
《中国医学影像技术》
CSCD
北大核心
2007年第1期105-108,共4页
Chinese Journal of Medical Imaging Technology
基金
新世纪优秀人才支持计划(NCET)资助(985-2-070-113)。
关键词
软骨
关节
磁共振成像
膝损伤
Cartilage, articular
Magnetic resonance imaging
Knee injuries
