儿童膝关节半月板病变的磁共振影像诊断

目的:探讨儿童半月板病变的磁共振表现。材料与方法:回顾性分析48例儿童半月板病变的MRI资料,并与关节腔镜对照。MRI检查扫描序列为冠状面、矢状面的SE T1WI、FFE T2WI,必要时行横断面PDWI。结果:盘状半月板34例,半月板变性3例,半月板撕裂11例,其中2例伴半月板囊肿。34例共36个盘状半月板包括凹面镜样20个,后角肥大型9个,薄片型6个和不完全型1个。MRI诊断儿童盘状半月板的正确率为83%,半月板撕裂的正确率为82%。结论:MRI是检测儿童膝关节半月板病变有效的无创性技术。

MRI diagnosis for meniscal lesions of the knees in children

Objective: To evaluate the use of MRI in evaluating meniscal lesions in children. Materials and Methods: The materials of 48 cases of meniscal lesions in children were analyzed retrospectively and compared them with arthroscopic result. MRI sequences used were coronal and sagittal SE T1WI, T2WI, sometimes with axial PDWI. Result: Discoid menisci 34 cases, meniscal degeneration 3 cases, meniscal tear 11 cases with 2 of them accompanied by meniscal cysts. Of the 36 discoid menisci, 20 were of biconcave shape, 9 had enlarged posterior horn, 6 were of the flat type and 1 incomplete type. Conclusion: MRI is a useful method in detecting meniscal lesions in children.