摘要
目的探讨高场强MRI对臂丛神经损伤的诊断及其应用价值。方法回顾性分析我院2010年8月至2013年3月利用1.5T或3.0T MRI检查的20例臂丛神经损伤患者,将患者图像进行后处理,分析臂丛神经损伤的MRI影像学特点。结果臂丛神经损伤的类型按部位可分为节前损伤、节后损伤及混合型损伤(节前、节后均损伤)。MRI征象包括:(1)直接征象:1神经增粗,局部神经连续性中断,信号异常10例;2神经走行僵直、结构紊乱19例。(2)间接征象:1创伤性脊膜囊肿10例;2黑线征5例;3神经根袖形态变钝1例;4脊髓挫伤、肿胀及移位5例;5损伤的神经邻近软组织结构紊乱,水肿,肌肉萎缩,脂肪浸润18例。结论高场强MRI具有更高的软组织分辨率,能完整的显示臂丛神经的解剖及走行,能准确、直观的显示臂丛神经损伤的位置及范围。
Objective To evaluate the diagnosis and application value of high field magnetic resonance image（MRI） on brachial plexus injury.Methods A retrospective analysis was made in 20 patients with brachial plexus injury.who underwent1.5T or 3.0T MRI examination between August,2010 and March,2013.Characteristics of brachial injury on MRI imaging were analysed after the images processing.Results Brachial injury can be divided into three types according to injury location ：preganglionic injury,postganglionic injury and mixed injury（including preganglionic and postganglionic injury）.Imaging features of MRIinclude ：（1）direct signs 1 coarsening,local continuous interruption and abnormal sign of nerve（10 cases）.2 stiff,structure disorder of nerve root（ 18 cases）.（ 2） indirect signs 1 pseudomeningocele（ 10 cases）;2 black line sign（ 5 cases）;3 blunt of nerve sleeve（1 case）;4 contusion,swelling and displacement of spinal cord（5 cases）;5 disorder of adjacent soft tissue structure of injured nerve,edema,muscle atrophy and fatty infiltration（18 cases）.Conclusion High field MRI has higher resolution of soft tissue,can completely reveal the clinical anatomy of brachial plexus and direction,display the location and range of brachial plexus injury accurately and intuitively.
出处
《解剖学研究》
CAS
2015年第1期43-49,共7页
Anatomy Research
