磁共振SPACE-STIR序列扫描对骶骨骨折合并骶神经损伤的诊断价值

目的:探讨磁共振SPACE-STIR序列扫描对骶骨骨折合并骶神经损伤的诊断价值。方法:2009年1月~2010年12月我院收治骶骨骨折合并骶神经损伤患者7例,均有骶神经损伤的相应症状和体征,术前均行腰骶部X线片、CT检查及3.0T磁共振常规平扫与SPACE-STIR序列扫描检查,并行手术治疗。对7例患者术前的腰骶部磁共振常规扫描图像、SPACE-STIR序列扫描图像进行回顾性对比分析。结果:术前根据临床症状和体征诊断为骶神经损伤,其中S1神经根损伤5例,S2神经根损伤2例。术前X线片、CT检查均诊断为骶骨骨折,DenisⅡ型5例,Ⅲ型2例,但不能显示有无神经根损伤。术前磁共振常规平扫不能直接显示骶神经根损伤;磁共振SPACE-STIR序列扫描显示骶神经根中断2例,骶神经根受推压移位3例,骶神经根水肿增粗5例,诊断为S1神经根损伤6例,S2神经根损伤1例,其中S1、S2神经根断裂各1例。手术证实S1神经根损伤6例,S2神经根损伤1例,其中S1、S2神经根断裂各1例。SPACE-STIR序列扫描诊断与手术诊断的符合率为100%。结论:3.0T磁共振SPACE-STIR序列扫描可直观显示骶骨骨折引起的骶神经损伤。

Value of MRI SPACE-STIR sequence in determination of sacral fracture complicated with sacral nerve injury

Objective:To investigate the diagnostic value of MRI SPACE-STIR sequence in determination of sacral fracture complicated with sacral nerve injury.Method:7 patients with sacral fracture and sacral nerve deficit from January 2009 to December 2010 were reviewed retrospectively.All cases presented with sacral nerve injury.X-ray,CT,MRI common scan and scan with SPACE-STIR sequence were performed preoperatively.After operation,the clinical data,routine scan images and images from SPACE-STIR sequence were analyzed...