A Non-Invasive Measurement System for Larynx Motion Developed for Swallowing Rehabilitation

专为吞咽康复而开发的喉部运动无创测量系统

• 批准号: 17300181
• 负责人: HAYASHI Toyohiko
• 金额: $ 5.18万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17300181/
• 关键词: swallowing; biomedical measurement; larynx motion; aspiration; dysphagia; swallowing rehabilitation; aged society

1) Design and development of a larynx-motion measurement systemSensing device of the system consists of twelve photo-reflective sensors spatially arranged in line, which are mounted on subject's frontal neck. The photo-reflective sensor is a combination of an infrared LED and a photodiode, capable of detecting reflected light from a reflective surface located in front of the sensor. Using the principle of the reflective-light intensity being inversely proportional to the square distance between the sensor and the reflective surface, we can estimate the distance from sensor output. Then, the one-dimensional (1-D) array of the photo-reflective sensor located in front of the target surface can detect the 1-D surface contour. The larynx position can be detected as the peak position of the frontal neck contour. If such measurement is done at a high sampling rate, we can digitize the larynx motion non-invasively.2) Measurement and analysis of water-swallowing motionFive healthy volunteers, w … More ho completely understand the purpose and procedure of the experiment and agreed with all of them, were asked to drink a 10[ml] of natural water at a single draft. We measured subject's larynx motion generated by this swallowing using the developed system at a rate of 400[Hz]. The onset of swallowing was defined as the time denoted as to when the digastric muscles started to be activated. We measured temporal parameters t_1, t_2, t_3 and t_4 at which the larynx was located at the position 5[mm], 10[mm], 15[mm] and 20[mm] distant from the initial position at to, respectively. Motion parameters were t_<0,1>, t_<1,2>, t_<2,3> and t_<3,4> defined as t_<i, j> =t_j-t_j The measurement was done five times for each subject, and the average value of each motion parameter was defined as the subject's representative value of the parameter. The average and standard deviation of the parameters with respect to all subjects were to_<0,1>: 0.31±0.09[s], t_<1,2>: 0.11±0.07[s], t_<2,3>: 0.06±0.03[s] and t_<3,4>: 0.04±0.02[s]. These results coincided well with our previous finding that the larynx ascending motion was accelerated. Less

1)喉运动测量系统的设计与开发该系统的传感装置由12个光反射传感器组成，它们在空间上呈直线排列，安装在受试者的前颈部。光反射传感器是红外LED和光电二极管的组合，能够检测来自位于传感器前面的反射表面的反射光。利用反射光强度与传感器与反射表面之间距离的平方成反比的原理，我们可以估计出从传感器输出的距离。然后，位于目标表面前的光反射传感器的一维（1-D）阵列可以检测到1-D表面轮廓。喉的位置可以被检测为颈部正面轮廓的峰值位置。如果在高采样率下进行这种测量，我们可以无创地数字化喉部运动。2)吞咽水运动的测量和分析5名健康的志愿者，其中有5人完全理解实验的目的和程序，并同意所有人的意见，他们被要求一次喝下10毫升的天然水。我们使用开发的系统以400[Hz]的速率测量受试者吞咽时喉咙的运动。吞咽的开始被定义为二腹肌开始被激活的时间。我们分别测量了喉位于距离初始位置5[mm]、10[mm]、15[mm]和20[mm]处的时间参数t_1、t_2、t_3和t_4。运动参数为t_<0,1>, t_<1,2>, t_<2,3>和t_<3,4>，定义为t_<i, j> =t_j-t_j每个受试者测量5次，每个运动参数的平均值定义为该受试者的参数代表值。所有受试者参数的平均值和标准差分别为< 0.01 >:0.31±0.09[s]、<1,2>:0.11±0.07[s]、<2,3>:0.06±0.03[s]和<3,4>:0.04±0.02[s]。这些结果与我们之前发现的喉部上升运动加速相吻合。少

项目成果

嚥下機能評価システムSFN-1を用いたビール飲み込み時の嚥下動態の解析

使用吞咽功能评估系统SFN-1分析啤酒吞咽过程中的吞咽动力学

• 发表时间: 2006
• 期刊: 電子情報通信学会技術研究報告 MBE2006-7
• 作者: 藤田翔平;村山 愛;林 豊彦;中村康雄;小島英敏;道見 登
• 通讯作者: 道見 登

Analysis of Beer Drinking Motion Using Swallowing Function Evaluation System SFN-1

利用吞咽功能评估系统SFN-1分析啤酒饮用动作

• 发表时间: 2006
• 期刊: IEICE Technical Report MBE2006-7
• 作者: Shohei FUJITA;Ai MURAYAMA;Toyohiko HAYASHI;Yasuo NAKAMURA;Hidetoshi KOJIMA;Noboru MICHIMI
• 通讯作者: Noboru MICHIMI

嚥下時における前頸部の皮膚面形状変化を利用した喉頭運動の分析

利用吞咽过程中颈前部皮肤表面形状的变化分析喉部运动

• 发表时间: 2005
• 期刊: 電子情報通信学会技術研究報告 Vol.111
• 作者: 村山愛;林豊彦;中村康雄;道見登
• 通讯作者: 道見登