摘要
目的:探讨低场磁共振对外伤性膝关节骨挫伤的临床诊断价值。方法:对53例骨挫伤病例作回顾性分析,重点观察其T1WI、T2WI及STIR上信号改变。结果:本组53例当中X线及CT均未见骨折征象。MRI检查发现骨挫伤53例,交叉韧带损伤4例,侧副韧带损伤1例。半月板损伤6例,合并有膝关节积液26例。T1WI检出骨挫伤49例,T2WI检出47例,STIR检出53例,骨挫伤表现为斑片状、地图状、T1WI低信号、T2WI、STIR高信号。结论:磁共振是目前膝关节骨挫伤的最佳有较检查方法,其中STIR序列能准确显示病变的范围与严重程度,是检查的最佳序列。
Objective：To probe the value of low field magnetic resonance imaging in traumatic bone contusion of knee joint.Methods：Fifty-three cases of bony contusion of knee joint who underwent low field MR imaging were retrospectively collected to analyze the signal changes on sequences of T1-weighted imaging,T2-weighted imaging,and fat suppressed STIR imaging.Results：No fracture sign was revealed on plain film and CT examination in fifty-three cases of bony contusion revealed by MR imaging.There were four cases of cruciate ligament injury,one lateral ligament injury,six meniscus injury,and twenty-six knee joint effusion.Forty-nine cases of bony contusion were detected on T1WI,forty-seven on T2WI,and otherwise fifty-three on STIR sequence.Findings of bony contusion detected on MR imaging were in patchy and mosaic patterns and low signal intensity on T1WI,high on T2WI and STIR.Conclusion：MR imaging is the best imaging modality available to detect bony contusion.Fat suppressed STIR sequence is the first choice which can reveal the lesion＇s severity.
出处
《医学影像学杂志》
2010年第4期568-570,共3页
Journal of Medical Imaging
关键词
膝关节
骨挫伤
磁共振成像
Knee joint
Bone contusion
Magnetic resonance imaging
