【摘要】 目的:对国人正常颞骨鼓乳段面神经进行MR斜矢状位成像观察及测量研究。方法:选择无任何耳部疾患的正常颞骨20例(40侧耳),在GE3.0T MR机上进行扫描,采用稳态采集的快速成像技术进行扫描,对颞骨内鼓乳段面神经进行MR成像。选取鼓乳段面神经显示连续完整的层面进行解剖测量。结果:标本在斜矢状位MR扫描中均得到鼓乳段面神经的完整清晰影像,测得面神经鼓室段的长度为(10.65±1.98)mm,乳突段长度为(14.87±1.20)mm。鼓室段直径为(1.24±0.14)mm,乳突段直径为(1.39±0.18)mm,锥段直径(1.25±0.21)mm。鼓室段和乳突段之间夹角为(105.22±9.13)°。结论:MR斜矢状位扫描可以良好显示颞骨内鼓乳段面神经的解剖特点,所测得数据与文献报道结果一致,可为临床提供参考。更多还原

【Abstract】 Objective To study and measure tympanic and mastoid segment of facial nerve of normal temporal bone with oblique saggital MR scanning.Methods Twenty normal temporal bones(40 ears) were scanned with 3D-FIESTA GE 3.0T MR scanning machine.All the ears underwent oblique sagittal MR scanning and then given some measurments.Results All the 20 temporal bone specimens(40 ears) were displayed well.The length of the tympanic segment was(10.65±1.98)mm.The length of mastoid segment was(14.87±1.20)mm.The diameter of the tympanic segment was(1.24±0.14)mm.The diameter of the mastoid segment was(1.39±0.18)mm.The diameter of the cone segment was(1.25±0.21)mm.The angle between the mastoid segment and the tympanic segment was(105.22±9.13)°.Conclusion Oblique sagittal MR scanning can show tympanic facial nerve well,and provides valuable evidence for the diagnosis and operation on ear disease.更多还原