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目的:验证多层螺旋CT三维成像的真实性与临床应用价值。方法:对40具完整的成年国人尸体头颅标本,利用多层螺旋CT三维成像技术及解剖技术,对视神经管内壁毗邻关系与蝶窦发育关系进行影像学与实体解剖学观察;对视神经管内壁隆起与视神经管毗邻关系进行影像学与实体解剖学观察;对视神经管内壁不同隆起形态的厚度和长度进行影像学与实体解剖学数据测量,并对比观察结果与测量数据。结果:①空间处理技术重建的整体空间分辨率高,可同时清晰显示视神经管及其周围的解剖结构;②仿真内镜技术进行的视神经管的内部重建,可清晰显示视神经管的内部结构,重建影像与健康国人视神经管的解剖形态一致;③多层螺旋CT成像的测量数据与解剖测量的数据比较,差异无统计学意义(均P>0.05)。结论:联合应用空间处理技术和仿真内镜技术,不仅可显示和测量视神经管的细微结构,还可从空间毗邻关系方面,为鼻内镜下经鼻蝶入路行视神经管减压术提供准确信息。
Objective: To verify the authenticity and clinical value of multi-slice CT in three-dimensional imaging. Methods: Forty adult cranial cadaver heads were used to observe the relationship between the adjacent relationship of the inner wall of optic canal and the development of sphenoid sinus by multi-slice spiral CT three-dimensional imaging and anatomical techniques. And the relationship between the optic canal adjacent to the imaging and anatomical observation of the anatomy; the inner wall of the optic nerve canal thickness and length of the different anatomical imaging and anatomical data measured, and the results of the observation and measurement data. Results: ① The spatial resolution of spatial reconstruction was high, and the anatomical structure of the optic canal and its surroundings could be clearly displayed at the same time. ② The reconstruction of the optic canal of the optic nerve by endoscopy was able to clearly show the internal structure of the optic canal and reconstruction The anatomy of optic canal was consistent with that of healthy people in China. (3) There was no significant difference between the data of multi-slice spiral CT imaging and the anatomical data (all P> 0.05). CONCLUSIONS: The combination of spatial manipulation and simulated endoscopy can not only display and measure the fine structure of the optic canal, but also provide accurate information on the adjacent relationship of the optic nerve canal for endoscopic transnasal approach information.