【摘要】 目的 应用MR三维成像优势序列研究腘窝胫神经形态、特征,并对腓总神经绕行腓管区腓骨头、颈行结构性测量,为基础研究及临床工作提供有价值的影像信息。方法 对36例健康志愿者左膝关节应用MR三维成像序列,包括三维FS-CUBE、FS-SPGR序列,由2名医师处理图像行可视化评价。应用优势序列重建图像,测量腘窝胫神经不同水平轴截面面积;测量腓骨头、颈的冠、矢状径及腓骨头、颈(腓管)夹角角度。采用SPSS 19.0软件统计分析。结果 三维FS-CUBE、FS-SPGR序列膝部神经优视率分别为25%、89%,P<0.01。腘窝胫神经轴截面:顶部水平(Tn1)(19.3±1.02) mm~2,中点水平(Tn2)(23.6±2.24) mm~2,髁上部水平(Tn3)(29.1±3.39) mm~2。腓骨头冠状径、矢状径分别为(19.8±2.95) mm、(19.7±4.2) mm;腓骨颈冠状径、矢状径分别为(12.7±3.1) mm、(13.6±2.5) mm;腓骨头、颈夹角为164°±6.5°。结论 三维FS-SPGR序列对膝部神经的显示为优势序列。腘窝段胫神经自顶部至髁上部水平逐渐增粗;对腓管区腓骨头、颈的结构性测量,为基础研究及临床腓总神经卡压综合征的预防及诊疗具有一定意义。更多还原

【Abstract】 Objective To study the morphology and characteristics of the popliteal tibial nerve and measure relevant structural parameters of the peroneal nerve passing round the fibular head and neck by 3D(three-dimensional) MR advantage sequences,and provide valuable image information for basic research and clinical work.Methods Thirty-six left knee joints of healthy volunteers were scanned using3D MR sequences,including 3D-FS-CUBE,3D-FS-SPGR.The anatomical features in MR imaging were observed by two doctors.The different level axis section areas of the popliteal tibial nerve were measured by reconstructed 3D MR advantage sequences.The coronal/sagittal diameters and the angle of the fibular head and neck(peroneal tunnel) were also measured and compared.SPSS 19.0 software was used for further statistical analysis.Results Optimum visual rates of the knee nerve of 3D-FS-CUBE,3D-FS-SPGR sequences were 25 %,89%(P<0.01).Axial section of the tibial nerve of the popliteal space was as following:top level(Tn 1,tibial nerve)(19.3±1.02) mm~2,midpoint level(Tn2)(23.6±2.24) mm~2,supracondylar level(Tn3)(29.1±3.39) mm~2.Coronal and sagittal diameters of the fibular head were(19.8±2.95) mm,(19.7±4.2) mm,and coronal and sagittal diameters of the fibular neck were(12.7±3.1) mm,(13.6±2.5) mm,respectively.The angle between the head and neck was 164°±6.5°.Conclusion 3D-FS-SPGR sequence is the advantage sequence for displaying the knee nerves.The diameters of the popliteal tibial nerves gradually thicken from Tn1 to Tn3.The structural measurements of the fibula head and neck have certain significance for fundamental research or prevention and treatment of common peroneal nerve entrapment.更多还原