Ultrasonographic assessment of the swallowing movement.

为了分析口腔期吞咽运动，使用SSD650CL （ALOKA）或Logiq700 （GE-Yokogawa）获得舌背矢状面、冠状面超声图像和咽侧壁轴向图像。同时使用Finescope 300、DCW-30A （Toshiba Medical Co.）和新购买的移动VF椅（Tomomi Studio, Inc .）进行显影。采用videoccanvas （Roland）和DSR-20、DSR-V10、GV-D900 （SONY）将超声图、视频荧光图和声音记录为单一数字图像数据。使用Premiere （Adobe）将数据作为电影数据输入新购买的个人电脑（Power Mac G4, Apple）。采用NIH图像对舌部运动的时间因子和形态学特征进行了分析。从而建立了超声检查的最佳方法。虽然荧光显像可以描绘叠加图像，但超声只能显示吞咽过程中舌头的断层图像。因此，我们认为至少两个图像可能是必要的，以诊断吞咽障碍矢状面和冠状面超声。对于咽侧壁轴位影像，超声评估需进一步分析。由于在康复或疾病进展的每一步都应频繁地进行吞咽评估，因此有必要通过显像减少患者的辐射暴露。为此，超声检查是有效的。在本研究的基础上，认为超声系统可以部分取代显像。

In order to analyze the swallowing movement in the oral period, the sagittal and coronal ultrasonograms of the dorsum of tongue and the axial images of the lateral wall of pharynx were obtained using SSD650CL (ALOKA) or Logiq700 (GE-Yokogawa). Videofluorography was simultaneously performed using Finescope 300, DCW-30A (Toshiba Medical Co.) and a newly- purchased mobile VF chair (Tomomi Studio, Inc).The ultrasonograms, videofluorograms, and sound were recorded as single digital image data using VideoCanvas (Roland) and DSR-20, DSR-V10, GV-D900 (SONY). The data were input into a newly-purchased personal computer (Power Mac G4, Apple) as movie data using Premiere (Adobe). The timefactor and morphologic characteristic of the tongue movement were analyzed on the ultrasonographic and videofluorographic images using NIH image. Thus, the optimal methods for ultrasonography were established.Although the videofluorography could depict the superimposed image, the ultrasonogragraphy could show only sectional images of the tongue during swallowing. Therefore, we considered that at least two images might be necessary to diagnose swallowing disorders by sagittal and coronal ultrasonography. Regarding the axial image of the lateral pharyngeal wall, further analysis were required for ultrasonographic assessment.Because swallowing assessment should be performed frequently at every step of rehabilitation or progression of illness, it is necessary to reduce the patient's radiation exposure by videofluorography. For this purpose, it was effective to use the ultrasonography. On the basis of the results of this study, it was concluded that the ultrasonography system could partially replace the videofluorography.