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The association of high resolution cervical auscultation signal features with hyoid bone displacement during swallowing

He, Qifan (2019) The association of high resolution cervical auscultation signal features with hyoid bone displacement during swallowing. Master's Thesis, University of Pittsburgh. (Unpublished)

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Recent publications have suggested that high-resolution cervical auscultation(HRCA) recordings producing combined accelerometric and acoustic signals may provide an alternative, non-invasive option for swallowing assessment. However, the relationship between hyoid bone displacement, a key component to the safe swallowing, and HRCA recordings is not thoroughly understood. Therefore, we investigated the relationship between hyoid bone displacement and HRCA signal features. We hypothesized that HRCA signal features would be associated with aspects of hyoid bone displacement. We measured hyoid bone displacement in horizontal and vertical directions, along with the hypotenuse of displacement, from videofluoroscopy images of 129 single swallows collected from 46 patients, and concurrently recorded vibratory/acoustic signals produced during these swallows. Our results showed that the vertical displacement of both the anterior and posterior landmarks of the hyoid bone were strongly associated with the Lempel-Ziv complexity of superior-inferior and anterior-posterior swallowing vibrations from HRCA signals. Horizontal and hypotenuse displacements of the posterior aspect of the hyoid bone were strongly associated with the standard deviation of swallowing sounds from HRCA signals. Medial-Lateral swallowing vibrations and patient characteristics such as age, sex and history of stroke were not significantly associated with aspects of hyoid bone displacement. The results imply that some vibratory and acoustic features extracted from HRCA recordings can provide information about the magnitude and direction of hyoid bone displacement. These results provide additional support for using HRCA as a non-invasive tool to assess physiological aspects of swallowing such as hyoid bone displacement. Future research should explore associations between HRCA signals and other swallow kinematic events such as laryngeal vestibular closure, upper esophageal sphincter opening and initiation of the pharyngeal swallow to improve the use of HRCA for assessment of swallowing and biofeedback during dysphagia therapy.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
He, Qifanqih30@pitt.eduqih300000-0002-5351-0480
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairSejdic, Ervinesejdic@pitt.eduesejdic
Committee MemberAkcakaya, Muratakcakaya@pitt.eduakcakaya
Committee MemberMao, Zhi-Hongzhm4@pitt.eduzhm4
Date: 23 January 2019
Date Type: Publication
Defense Date: 14 November 2018
Approval Date: 23 January 2019
Submission Date: 15 November 2018
Access Restriction: 5 year -- Restrict access to University of Pittsburgh for a period of 5 years.
Number of Pages: 67
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Electrical and Computer Engineering
Degree: MS - Master of Science
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: High resolution cervical auscultation, swallowing accelerometry, swallowing sounds, dysphagia, signal processing, hyoid displacement
Date Deposited: 23 Jan 2019 16:18
Last Modified: 23 Jan 2024 06:15


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