title: Measuring body layer vibration of vocal folds by high-frame-rate ultrasound synchronized with a modified electroglottograph.
abstract: The body-cover concept suggests that the vibration of body layer is an indispensable component of vocal fold vibration. To quantify this vibration, a synchronized system composed of a high-frame-rate ultrasound and a modified electroglottograph (EGG) was employed in this paper to simultaneously image the body layer vibration and record the vocal fold vibration phase information during natural phonations. After data acquisition, the displacements of in vivo body layer vibrations were measured from the ultrasonic radio frequency data, and the temporal reconstruction method was used to enhance the measurement accuracy. Results showed that the modified EGG, the waveform and characteristic points of which were identical to the conventional EGG, resolved the position conflict between the ultrasound transducer and EGG electrodes. The location and range of the vibrating body layer in the estimated displacement image were more clear and discernible than in the ultrasonic B-mode image. Quantitative analysis for vibration features of the body layer demonstrated that the body layer moved as a unit in the superior-inferior direction during the phonation of normal chest registers.
authors.affiliation: The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi' an Jiaotong University, Xi' an 710049, People's Republic of China.
authors.forename: Shanshan
authors.initials: S
authors.lastname: Tang
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Xulei
authors.initials: X
authors.lastname: Qin
authors.forename: Supin
authors.initials: S
authors.lastname: Wang
authors.forename: Mingxi
authors.initials: M
authors.lastname: Wan
mesh_terms: D000328:Adult; D000368:Aged; D000465:Algorithms; D004566:Electrodes; D004568:Electrodiagnosis / Q000295:instrumentation / Q000379:methods*; D005931:Glottis / Q000000981:diagnostic imaging*; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000295:instrumentation / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010699:Phonation / Q000502:physiology*; D012123:Pulmonary Ventilation / Q000502:physiology; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation / Q000379:methods*; D014732:Vibration; D014827:Vocal Cords / Q000000981:diagnostic imaging*; D055815:Young Adult