眶尖部的断层影像解剖学研究

IMAGING SECTIONAL ANATOMY STUDY ON THE ORBITAL APEX

①目的 通过眶尖部结构的断层影像解剖研究 ,为鼻内镜下眶尖部手术提供可靠的解剖学数据 ,减少手术并发症。②方法 随机选取 30例成人尸头进行CT扫描 ,对前鼻棘至眶尖部各结构的距离、侧偏角、视神经管及眶上裂各径线长度、毗邻关系等进行断层影像解剖观测。并将CT扫描图像与断层切片进行对照。③结果断层影像测量前鼻棘至视神经管眶口、颅口内侧壁的距离分别为 (70 .35± 4 .93)、(72 .76± 5 .0 3)mm ,侧偏角分别为9.6 5°± 1.30°、5 .4 4°± 0 .86°。视神经管内侧壁中部最薄 ,视神经管中部为视神经管最狭窄的部位。④结论以FV平面作为轴位扫描基线 ,结合水平及冠状位CT图像进行分析 。

Objective To provide reliable anatomy data by sectional anatomy and imaging scans of the orbital apex for endoscopic operation of this region to reduce its complications. Methods A CT scanning was done for 30 adult cadaveric heads. The distance and angle of the lateral deviation from anterior nasal spine to the varial structures of the orbital apex, structures and the adjacent relationship of optic canal walls and the superior orbital fissure were measured. The imaging data were compared with the sectional anatomic data of the orbital apex. Results The distance and angles of the lateral deviation from anterior nasal spine to the medial wall of the optic canal were (70.35±4.93)mm, (72.76±5.03)mm, 9.65°±1.30° and 5.44°±0.86°,respectively. The middle of the medial canal wall was the thinnest in three parts of the medial canal wall and the middle part was the narrowest among the three parts of the canal. Conclusion With the FV plane as the axial base line, the structures of the orbital apex can be located accurately with the axial and coronal CT scans.