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MRI technique for imaging pelvic segment of the sciatic nerve

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Author:
No author available
Journal Title:
CHINESE JOURNAL OF RADILOGY
Issue:
7
DOI:
10.3760/j.issn:1005-1201.2001.07.006
Key Word:
坐骨神经;磁共振成像;评价研究

Abstract: 目的探讨应用MRI显示盆腔段坐骨神经的技术问题。方法采用GE Signa 1.5 T超导型磁共振仪对35例检查者共48条坐骨神经行二维自旋回波(2D-SE)的双斜面定位后斜矢状面成像和三维破坏性稳态梯度回波(3D-SPGR)的容积采集重建成像,并将2种序列对盆腔段坐骨神经的显示率加以比较。其中4例肿瘤患者6条坐骨神经行Gd-DTPA增强扫描。结果 2D-SE 序列和3D-SPGR 序列对盆腔段坐骨神经的显示率分别为75%和90%,两者间差异具有显著性意义(P<0.05)。6条增强后的坐骨神经受病变侵犯呈节段性显示,并见神经鞘膜强化。结论以梨状肌为定位点的MR成像技术能显示行走于梨状肌前缘、并从其下缘穿出的盆腔段坐骨神经。3D-SPGR优于2D-SE。

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