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首页> 美国卫生研究院文献>Dentistry Journal >Quantitative Analysis of Velopharyngeal Movement by Applying Principal Component Analysis to Range Images Produced by a Three-Dimensional Endoscope
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Quantitative Analysis of Velopharyngeal Movement by Applying Principal Component Analysis to Range Images Produced by a Three-Dimensional Endoscope

机译：通过对三维内窥镜产生的距离图像进行主成分分析来定量分析咽喉运动

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>Objectives: The purpose of this study was to develop a new technique for analyzing velopharyngeal movement and to investigate its utility. >Materials and Methods: Velopharyngeal motion of 20 normal individuals was analyzed. A three-dimensional (3D) endoscope was inserted into the oral cavity, and the movement of the soft palate was measured using an exclusive fixation device. Range images of the soft palate were produced during phonation of the Japanese vowel /a/, and virtual grids were then overlaid on these images. Principal component analyses were applied to the 3D coordinates of the intersections of the virtual grids. The centers of gravity of the virtual grids were calculated, and the magnitude of the shift of the grid intersections during phonation was calculated. >Results: The first and the second principal component scores were responsible for the upper posterior direction and the upper direction, respectively. The average magnitude of the shift of the center of gravity was 4.75 mm in males and 4.33 mm in females. >Conclusions: Quantitative analysis of velopharyngeal movement was achieved by a method of applying principal component analysis (PCA) to the range images obtained from a 3D endoscope. There was no sex difference in velopharyngeal movement.
机译：>目的：本研究的目的是开发一种新技术来分析口咽运动并研究其实用性。 >材料与方法：分析了20名正常人的咽咽运动。将三维（3D）内窥镜插入口腔，并使用专用固定装置测量软pa的运动。在发声日本元音/ a /的过程中产生了柔和的范围图像，然后在这些图像上覆盖了虚拟网格。将主成分分析应用于虚拟网格的交叉点的3D坐标。计算虚拟栅格的重心，并计算发声期间栅格相交的偏移量。 >结果：第一和第二主成分评分分别负责上后方向和上方向。重心偏移的平均大小在男性中为4.75 mm，在女性中为4.33 mm。 >结论：通过将主成分分析（PCA）应用于从3D内窥镜获得的距离图像的方法，可以实现对咽喉运动的定量分析。咽咽运动没有性别差异。

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