MR选择性激励技术在腰椎间盘突出患者神经根显示中的价值

Application of MR PROSET Technique in Diagnosing Lumbar Disc Protrusion

目的:探讨MR选择性激励技术(PROSET)在腰椎间盘突出患者中显示神经根的应用价值。方法:正常志愿者15例,腰椎间盘突出患者47例,进行常规扫描和PROSET冠状面腰骶部神经根成像,所有图像均经3D最大信号强度投影(MIP)后处理,观察脊神经根形态、走行及与突出椎间盘的关系。结果:15例志愿者PROSET成像均清楚显示硬膜囊、硬脊膜鞘外形及脊神经根、神经节和部分节后段的走行。47例腰椎间盘突出患者PROSET成像全部清楚显示突出椎间盘对神经根压迫及其程度。结论:PROSET序列对显示腰骶神经根解剖具有独特优势,可以为腰椎间盘突出时神经根受压情况的诊断提供依据。

Purpose： To investigate the clinical value of MR PROSET technique in showing and diag- nosing lumersacral nerveroots diseases. Methods： Conventional MRI sequence and PROSET sequence were performed in 15 healthy volunteers and 47 lumbar disc protrusion patients. Each case performed 3D maximum intensity projection（3D MIP） . Spinal nerveroots were observed. Results： The dura, dura sheath, spinal nerveroot, ganglias, segments of the nerves posterior to the ganglions could be shown well with PROSET and could be observed from multiple aspects by the 3D MIP.Among the 47 cases of lumbar disc protrusion, the level of the invasion and compression to the ganglias could be shown with PROS- ET. Conclusion： Combined to the PROSET technique with conventional MRI procedure, satisfied proof can be provided the diagnosis of lumersacral nerveroots diseases.