| 摘要: |
| 目的探讨标准立体空间坐标系膜迷路模型的建立，并对壶腹嵴空间方向进行测量。方法分割33例双侧内耳、眼球模型生成统计形状模型并导出平均模型作为标准模型，根据半规管总脚分叉点和眼球下缘为水平面建立标准立体空间坐标系；将骨迷路和标准模型进行校准，膜迷路包括壶腹帽模型随之进行三维空间变换确立膜迷路空间方向，并测量壶腹嵴空间方向。结果校准后的膜迷路有利于观察壶腹嵴空间方向。外半规管壶腹嵴和矢状面夹角为3.8°，后半规管壶腹嵴和矢状面的夹角为42.8°。结论本研究成功建立了标准立体空间坐标系膜迷路模型，并测量了壶腹嵴空间方向，可用于良性阵发性位置性眩晕（BPPV）的研究。 |
| 关键词: 膜迷路 眼球 壶腹嵴 磁共振成像 统计形状模型 三维空间坐标系 |
| DOI：10.12056/j.issn.1006-2785.2017.40.8.2017-2443 |
| 分类号: |
| 基金项目:温州市重大科技专项项目（ZS2017020）；温州市公益性科技计划项目（Y20160267、Y20160286） |
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| Establishment of membrane labyrinth model in standard three-dimensional coordinate system |
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Wenzhou People's Hospital
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| Abstract: |
| Objective To establish a membranous labyrinth model in standard three-dimensional space coordinate system and to measure the spatial direction of crista. Methods Thirty three cases of bilateral inner ears and eye model were segmented to generate statistical shape model and derive the average model as the standard model. The plane passes the foot of common crus bifurcation of semicircular duct and the bottom of the eye that parallel to the horizontal plane for building the standard three-dimensional space coordinate system. The bony labyrinth was calibrated with the standard model and then transformed the membranous labyrinth and ampulla model, the spatial direction of membranous labyrinth was established and the spatial direction of the crista was measured. Results The membranous labyrinth was beneficial for observing the spatial
direction of crista. The angle between the crista of the lateral semicircular canal and the sagittal plane was 3.8°, and the angle
between the crista of the posterior semicircular canal and the sagittal plane was 42.8°. Conclusion A membranous labyrinth model has been successfully established in standard three-dimensional coordinate system and the spatial direction of the crista ampullaris has been measured, which can be used for the study of benign paroxysmal positional vertigo. |
| Key words: Membranous labyrinth Eyeball Crista Magnetic resonance imaging Statistical shape model
Three-dimensional coordinate system |
