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磁共振(MRI)技术在膝关节软骨损伤中的应用

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摘要 目的:评估磁共振(MRI)不同扫描序列在膝关节软骨损伤中的应用价值。方法:选取临床上有外伤史,高度怀疑关节软骨损伤的患者38人40例膝关节进行MRI检查。MRI扫描序列包括:T1加权快速自旋回波序列(FSE—T1)质子和T2加权快速自旋双回波序列(FSE—PD/I2)、附加脂肪抑制的质子和T2加权快速自旋双回波序列(FS—FSE—PD/T2)、梯度回波T2加权序列(GRE)、附加脂肪抑制的三维快速扰相梯度回波序列(FS-3DT2^*-FSPGR)、反相位T1加权脂肪抑制序列(Unilatreal T1—Special—FSPGR)。结果:40例膝关节中30例做了关节镜检查,MRI诊断16例为软骨损伤,其中14例得到关节镜证实:MRI检查对关节软骨的诊断敏感度为87.5%,特异性为92%。各序列对软骨损伤的检出率从FSE—T1序列、FSE—PD/T2序列和GRE序列、到FS—FSE—PD/T2序列、Unilatreal T1—Special—FSPGR、FS-3DT2^*-FSPGR顺次增高,分别为25%、50%、80%、94%、100%。结论:MRI检查的几种序列都能清楚的显示膝关节软骨并对其损伤作出准确的诊断,其中FS—FSE—PD/T2序列,FS-3DT2^*-FSPGR序列、Unilatreal T1—Special—FSPGR较其他序列有无可比拟的优越性。
出处 《医用放射技术杂志》 2005年第2期39-41,共3页 Journal of Medical Radiology Technology
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