扩散加权成像(DWI)在脊髓损伤中的应用价值

Evaluation of Diffusion Weighted Imaging(DWI) in Spinal Cord Injury

目的回顾分析脊髓损伤的磁共振扩散加权像(DWI)影像特点,探讨DWI在脊髓损伤中的价值。方法 52例脊柱外伤或椎管狭窄合并脊髓损伤患者,其中急性外伤31例,陈旧性外伤8例,椎间盘突出继发颈椎椎管狭窄13例。所有患者行常规T1WI、T2WI、STIR及DWI成像。结果 31例急性脊髓挫裂伤,DWI检出32灶呈高信号,3灶呈等信号未检出,常规T2WI、STIR检出25灶呈高信号。21例陈旧性挫裂伤与脊髓型颈椎病继发慢性损伤,T2WI与STIR检出23灶呈高信号,DWI检出12灶呈低信号。结论 DWI在急性脊髓损伤中的诊断中明显优于常规MRI序列,同时能有效对脊髓急性损伤与陈旧性或慢性损伤进行鉴别,其应作为脊髓损伤的常规检查序列。

【Objected】 To investigate the valuation of diffusion weighted imaging（DWI） in diagnosis the spinal cord injury.【Methods】 52 patients with spine cord injury,including 31 cases acute spinal injury,8 cases remote healed spinal injury and 13 cases spinal canal stenosis on intervertebral disk hernia.All the patients were performed by routine T1WI,T2WI,STIR and DWI sequences.【Results】 32 lesions showed high signal and 3 lesions equal signal on DWI in 31 cases with acute spinal cord injury and 25 lesions showed high signal on routine T2WI and STIR.23 lesions showed high signal on T2WI and STIR and 12 lesions low signal on DWI in 21 cases with remote healed spine cord injury or cervical spondylotic myelopathy.【Conclusion】 DWI is superior to MR routine sequences in diagnosis acute spinal cord and distinguish acute spinal cord injury and remote healed spinal cord injury or chronic injury.DWI must be the routine sequence in spinal cord injury.