骨迷路

Objective To study the optimal parameters of 3D spiral CT of osseous labyrinth in normal inner ear.

目的 探讨内耳骨迷路CT三维重建的最佳成像参数。

Virtual human data can be reconstructed osseous labyrinth, facial nerve trunk, and the vestibular nerve trunk, such as cochlear fine structure visualization model.

可以通过虚拟人数据重建出骨迷路、面神经主干、前庭蜗神经主干等精细结构的可视化模型。

Vestibule; temporal bone; bony labyrinth; inner ear; perilymph; angular acceleration; hair cells; stereocilia; crista ampullaris; ampulla; cristae; cupula; vertigo; VOR; vestibulo-ocular reflex; vestibular nerve; vestibular nuclei; vestibular ganglion; equilibrium

前庭；颞骨；骨迷路；内耳；外淋巴；角加速度毛细胞；静纤毛；壶腹嵴；壶腹；嵴；吸盘；眩晕；VOR；前庭眼球反射；前庭神经；前庭神经核；前庭神经节；平衡

pressure or sound sensitive vertigo seemed to occur when there were abnormal communication between the inner ear and surrounding structures or the shortend distance between the footplate and saccule.

上半规管裂时内耳和周围结构之间存在异常交通，膜迷路积水和镫骨足板活动过度则可能系球囊与镫骨足板之间的距离变近，可出现对声音或压力敏感性眩晕。vemp阈值的变化可以对这类眩晕进行客观评价。

Objective To supply suboccipital retrosigmoid approach drilling of the posterior wall of the internal acoustic meatus and preserving bone labyrinths. Methods Ten cadaveric adult heads were examined by internal acoustic meatus centered CT thin tomographic scan.

应用10例甲醛固定的汉族成人头颅湿性标本，以内耳道为中心进行了CT断层薄扫，在手术显微镜下磨开内耳道后壁，保护骨迷路，用游标卡尺、量规进行了测量。

Results: The facial nerve from the point left brainstem to stylomastoid foramen were divided into five segments named cerebellopontine angle segment,internal acoustic meatus segment,labyrinthine segment,tympanum segment and mastoid segment.

结果：面神经从桥延沟离开脑干到茎乳孔分为五段：小脑脑桥角段、内听道段、迷路段、鼓室段、乳突段，其中后四段走行于颞骨骨管中。

Comclusion: transpetrous presigmoid retrolabrinth approach was rational approach for surgery on petroclivus and -4- CPA; it抯 important for accomplish the surgery to study and master the anatomy and variance of this approach; there was relative anatomical relationship among those structure on posterior of petrous bone; AAMP was the extracranial mark of inflexion of TS and SS; LAM and PSC were obvious bone marks for operation; we can confirm the abraded range of petrous bone lean upon LAM and/or GSS beside abrading step by step as literature, and it抯 unnecessary and unrational to emphasize to show PSC if the surgical space was enough; preceding sigmoid sinus and high jugular bulb often appeared at right and would bring disadvantage effect; interspace ,between CN V and CNVII or CNVII and CNJXI, were available to reach clivus and manage the mass on the range.

经SS前迷路后入路是处理岩斜坡区、桥小脑角区病变理想的手术入路；研究和熟悉手术入路中的解剖结构及部分变异对指导手术十分必要；岩骨内测面的骨性结构之间有着相对稳定的空间关系；顶乳缝前角是SS和TS转接处在颅外的标志；IAM和PSC等结构可以作为手术中的重要骨性标志；以PSC确定岩骨的磨除范围是较安全和可靠的，但亦可以结合影像检查，以内耳道和乙状窦前缘为基点判定切除范围，如果操作空间足够，过分强调磨出半规管是不适当的；右侧GSS的宽度和深度较对侧大，SS前置和颈静脉球高位较对侧多见，这些都对右侧入路有不利的影响，但仍可以进行手术操作；三叉神经和面神经间隙及面l 神经和舌咽神经间隙方便到达斜坡并处理病变。l

Objective: To study the posterior surface of petrous bone and abut important neurovessel, in order to provide anatomical prove for clinic transpetrous presigmoid retrolabrinth approach.

目的：研究岩骨小脑面及与其毗邻的重要神经和血管结构，为临床开展经岩骨SS前迷路后入路进行显微神经外科手术提供解剖学依据。

To compare the effect on operative exposureamong retrolabyrinthine approach,PLPA approach and translabyrinthine approach.Methods (1)Vessels perfusion and microanatomy were performed in 15 cadavericheads.Outlines of temporal bone and space relationship between inner structureswere measured.

目的研究颞骨的外部形态及内部结构，测量结构的空间关系；对比研究神经导航辅助Kawase入路与常规Kawase入路对手术过程及手术暴露的影响；对比研究迷路后入路、PLPA入路及经迷路入路对手术暴露的影响。

Using the smallest density projection may clearly demonstrate the internal earandmay obtain the auditory bone chain and the internal ear three dimensional three-dimensional image using ssd-3d.

运用最小密度投影可以清楚显示内耳骨迷路及膜迷路，运用ssd-3d可以得到听骨链及内耳骨迷路的三维立体影像。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。