颅底点

To avoid the influence of head position change and to overlap and compare the changing hard tissue under the skull reference system, this work set up a three-dimensional reference frame, which was based on point"S'"(the median point of the upper rear brim of the anterior wall of pituitary fossa), point"Na"and point"Ba"and of which point"S"is origin. UNISIGHT is used to get the original coordinates of all the landmarks in the MPR phase.

为消除矫治前后患者头位变化的影响，使治疗前后变化的上下颌骨和牙列以相对不变的颅底结构作为参照系统进行影像的重叠和对比，本研究通过头颅内的固有标志点S'，N，Ba三点确定了参考平面，建立了以S'点为原点的测量三维坐标系。

The presence of hyperpneumatization of the frontal sinus concerns with the angle from the line between the junctional point and attachment point of cribriform plate to horizontal line, with the more large angle, the more high rate of frontal gasification, and the more deep olfactory fossa.

额窦高度气化与眶板垂直切线与前颅底交点，这点与中鼻甲骨质筛板附着点的连线与水平线夹角的大小有关，这个夹角越大额窦高度气化发生的几率越大、同时嗅凹也较深。

Methods A retrospective analysis of paranasal coronal computedtomography scans of 200 sides from 100 patients were performed. The junction point between vertical line of orbital plate and anterior cranial fossa, the angle from the line between the above point and attachment point of cribriform plate to horizontal line, the distance from vertical line of orbital plate to attachment point of cribriform plate, were measure respectively.

回顾性分析100例患者200侧的鼻窦CT，在冠状位上测量眶板垂直切线与前颅底交点，此点与中鼻甲骨质筛板附着点的连线与水平线的夹角、眶板垂直切线与中鼻甲骨质筛板附着点之间的水平距离。

Methods: The microanatomy of these interspaces was studied in 8 sides of human cadaver specimen with sphenoid approach. Seven cases of pituitaries and four craniopharyngiomas were diagnosed by MRI, which were removed bit by bit through the interspace superior to the fork of internal carotid artery and the first to the fourth interspaces in skull base.

在8侧尸体头上采用翼点入路观察颈内动脉分叉上间隙的显微结构；并对磁共振诊断为大型垂体瘤7例及颅咽管瘤4例者，采取翼点入路、联合应用颈内动脉分叉上间隙及颅底第1~4间隙，行瘤内减压、逐步切除肿瘤。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。