充分暴露外半规管轮廓和砧骨窝，保持骨性外耳道后壁的完整。
Outside the full exposition the semicircular canals outline and the anvil nest, maintains the osseous external auditory meatus behind completeness.
砧骨短脚或砧骨窝及外半规管是乳突手术中确定FN锥曲段的重要标志。
Short limb of incus(or incudal fossa) and lateral semicircular canal are important landmarks by which pyramidal segment of FN might be located in manipulation of mastoid.
标本切片与CT图像对照，对颞骨内砧骨窝、鼓索隆起、茎突隆起、面神经隐窝、鼓室窦、岬小桥、外耳道上棘等结构进行观察。
Foramen incudis, chordal eminence, styloid eminence, facial recess, sinus tympani, ponticulus and suprameatal spine were identified on anatomic slices and CT images respectively.
应用推荐