Jing Bowen, Chigan Pengju, Ge Zhengtong, Wu Liang, Wang Supin, Wan Mingxi
The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an, Shaanxi, 710049, People's Republic of China.
J Acoust Soc Am. 2017 May;141(5):3312. doi: 10.1121/1.4983472.
For the purpose of noninvasively visualizing the dynamics of the contact between vibrating vocal fold medial surfaces, an ultrasonic imaging method which is referred to as array-based transmission ultrasonic glottography is proposed. An array of ultrasound transducers is used to detect the ultrasound wave transmitted from one side of the vocal folds to the other side through the small-sized contact between the vocal folds. A passive acoustic mapping method is employed to visualize and locate the contact. The results of the investigation using tissue-mimicking phantoms indicate that it is feasible to use the proposed method to visualize and locate the contact between soft tissues. Furthermore, the proposed method was used for investigating the movement of the contact between the vibrating vocal folds of excised canine larynges. The results indicate that the vertical movement of the contact can be visualized as a vertical movement of a high-intensity stripe in a series of images obtained by using the proposed method. Moreover, a visualization and analysis method, which is referred to as array-based ultrasonic kymography, is presented. The velocity of the vertical movement of the contact, which is estimated from the array-based ultrasonic kymogram, could reach 0.8 m/s during the vocal fold vibration.
为了无创可视化振动声带内侧表面之间接触的动态过程，提出了一种基于阵列传输超声声门成像的超声成像方法。超声换能器阵列用于检测从声带一侧通过声带间小尺寸接触传输到另一侧的超声波。采用被动声学映射方法来可视化和定位接触点。使用组织模拟体模的研究结果表明，使用所提出的方法可视化和定位软组织之间的接触点是可行的。此外，所提出的方法被用于研究切除的犬喉振动声带之间接触点的运动。结果表明，接触点的垂直运动可以在所提出的方法获得的一系列图像中可视化为高强度条纹的垂直运动。此外，还提出了一种称为基于阵列超声记波法的可视化和分析方法。从基于阵列的超声记波图估计的接触点垂直运动速度在声带振动期间可达0.8 m/s。
