内耳道底的断面解剖学研究

Sectional Anatomy Study of the Bottom of Internal Acoustic Meatus

目的 :进一步明确内耳道底各结构的断面形态 ,为影像诊断和手术治疗提供解剖学资料。方法 :用火棉胶包埋技术将 6例成人头颅标本制备成厚 0 .5～ 2mm的耳颞部横切片 ,观察内耳道底的结构。结果 :选取 2mm厚和0 .5mm厚两种切片中典型的内耳道底上部层面和下部层面进行描述。结论 :火棉胶切片很好地显示了内耳道底通过的结构及其毗邻关系 ,对该区的影像诊断和手术治疗有重要的参考价值。

Objective:To study the sectional anatomy of the bottom of the internal acoustic meatus and to provide anatomic data for imaging diagnosis and surgery.Methods:6 adult cephalic specimens were sliced into contiguous sections(0.5～2mm in thickness)on transversal plane using celloidin embedding technique.The structures in the bottom of the internal acoustic meatus were observed.Results:The upper and lower sections of the bottom of the internal acoustic meatus were selected in the thickess of 2mm and 0.5mm,and the key structures were described.Conclusion:The sections of celloidin clearly delineated the anatomic details of the bottom of the internal acoustic meatus and their relationships,providing valuable information for imaging diagnosis and surgery of this area.