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Three dimensional (3D) display of the pharyngeal air space change by a compensation posture for dysphagia using cone-beam CT

使用锥形束 CT 三维 (3D) 显示吞咽困难补偿姿势引起的咽部气隙变化

基本信息

批准号：
15390568
负责人：
TANIMOTO Keiji
金额：
$ 8.06万
依托单位：
HIROSHIMA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15390568/
关键词：
Swallowing Cone beam CT Multi slice CT Piriform sinus CT 計測

项目摘要

Change postures in swallowing changes the shape of oropharyngeal space. The purpose of first research was to analyze this change using 3 dimensional data from cone-beam CT.To see the effect of gravity, 10 volunteers were taken in sitting position with cone-beam CT (CBCT) and in supine position Multislice CT (MSCT) asking saliva swallow to anticipate rest position. Unfortunately, only 3 volunteers became rest position after swallow. From these 7 cases' data, soft palate was a little affected by the gravity. Further, hyoid bone, epiglottis and esophageal entrance were more affected by the gravity and have a tendency of aging.To analyze the effect of head rotation to one side to the shape of pharyngeal space, we took CBCT with head-on and rotated to the right side. Videoendoscopy was taken in 2 volunteers. It was said that the piriform sinus in the rotated side will disappear because of the pressure to this area, but another side will be enlarged. From our CT data, we reconstructed 3 D images. The piriform sinus was not shrunk completely in the rotated side but rather enlarged. The opposite side of piriform sinus also enlarged. But in the level of the upper piriform sinus, the shape of the pharynx changed to a tear-drop shape from the oval one. The opposite side was enlarged and rotated side was shrank. Most of the researches to analyze this they use endoscopy and it does not allow the direct observation of the piriform sinus when rotated.

改变吞咽姿势会改变口咽空间的形状。第一项研究的目的是利用锥束CT的三维数据来分析这一变化。为了观察重力的影响，10名志愿者接受了锥束CT(CBCT)的坐位和仰卧位的多层螺旋CT(MSCT)检查，要求唾液吞咽以预测休息位置。不幸的是，只有3名志愿者在吞咽后进入休息状态。从这7例病例的数据来看，软腭部受重力的影响较小。此外，舌骨、会厌和食管口受重力影响较大，有老化的趋势。为了分析头部向一侧旋转对咽间隙形态的影响，我们进行了正面和右侧旋转的CBCT扫描。对2名志愿者进行了视频内窥镜检查。据说，旋转侧的梨状窦会因为这一区域的压力而消失，但另一侧会扩大。根据我们的CT数据，我们重建了3D图像.旋转侧梨状窦不是完全缩小，而是增大。梨状窦的对侧也增大。但在上梨状窦水平，咽部形状由椭圆形变为泪滴状。对侧放大，旋转侧缩小。大多数研究分析这一点，他们使用内窥镜，它不允许在旋转时直接观察梨状窦。