Colin T, Provost N, Beguin J, Loyau G
Service de Rhumatologie, CHRU, Caen.
Rev Rhum Ed Fr. 1994 May;61(5):319-25.
Magnetic resonance imaging provides excellent tissue contrast resolution and can therefore be used to visualize joint cartilage. The goal of this study was to evaluate the value of magnetic resonance imaging for the diagnosis of femorotibial cartilage lesions. Spin-echo magnetic resonance imaging was performed in 37 patients. As compared with arthroscopy, the accuracy, sensitivity, and specificity of magnetic resonance imaging were 72.5%, 47%, and 95.5%, respectively. Only advanced cartilage lesions with exposure of subchondral bone were clearly seen on magnetic resonance sections. Limiting factors included insufficient spatial resolution and the chemical shift phenomenon. Spin-echo sequences used in everyday practice are not appropriate for detecting small cartilage lesions. Controlled studies are needed to determine whether gradient echo sequences are more satisfactory.
磁共振成像提供了出色的组织对比分辨率，因此可用于观察关节软骨。本研究的目的是评估磁共振成像在诊断股骨胫骨软骨损伤中的价值。对37例患者进行了自旋回波磁共振成像检查。与关节镜检查相比，磁共振成像的准确性、敏感性和特异性分别为72.5%、47%和95.5%。在磁共振切片上仅能清晰看到伴有软骨下骨暴露的晚期软骨损伤。限制因素包括空间分辨率不足和化学位移现象。日常实践中使用的自旋回波序列不适用于检测小的软骨损伤。需要进行对照研究以确定梯度回波序列是否更令人满意。
