Typing Vocal Fold Vibratory Patterns in Excised Larynx Experiments Via Digital Kymography

Krausert, Christopher R.; Kelly, Michael; Jiang, Jack J.

doi:10.1177/000348940911800812

Cited by 12 publications

(11 citation statements)

References 33 publications

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“…4). Restoration of a normal mucosal wave, indicated by symmetric and periodic sinusoidal functions with sustained inter‐vocal fold contact between cycles,44 also occurred in some larynges after AA (Fig. 6).…”

Section: Discussionmentioning

confidence: 87%

Multiparameter comparison of injection laryngoplasty, medialization laryngoplasty, and arytenoid adduction in an excised larynx model

et al. 2010

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Objective-Evaluate the effect of injection laryngoplasty (IL), medialization laryngoplasty (ML), and ML combined with arytenoid adduction (ML-AA) on acoustic, aerodynamic, and mucosal wave measurements in an excised larynx setup.Methods-Measurements were recorded for eight excised canine larynges with simulated unilateral vocal fold paralysis (UVFP) before and after vocal fold injection with Cymetra. A second set of eight larynges was used to evaluate medialization laryngoplasty using a Silastic implant without and with arytenoid adduction.

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Section: Discussionmentioning

confidence: 87%

Multiparameter comparison of injection laryngoplasty, medialization laryngoplasty, and arytenoid adduction in an excised larynx model

et al. 2010

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“…[80] identified three different vocal fold vibratory patterns in excised canine larynges using digital kymography (DKG). The type 1 pattern showed a periodic time-series of glottal edges and a distinct frequency spectrum.…”

Section: Excised Human and Animal Larynx Experimentsmentioning

confidence: 99%

Experiments on Analysing Voice Production: Excised (Human, Animal) and In Vivo (Animal) Approaches

Döllinger¹,

Kobler²,

Berry³

et al. 2011

CBIO

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Experiments on human and on animal excised specimens as well as in vivo animal preparations are so far the most realistic approaches to simulate the in vivo process of human phonation. These experiments do not have the disadvantage of limited space within the neck and enable studies of the actual organ necessary for phonation, i.e., the larynx. The studies additionally allow the analysis of flow, vocal fold dynamics, and resulting acoustics in relation to well-defined laryngeal alterations. Purpose of Review This paper provides an overview of the applications and usefulness of excised (human/animal) specimen and in vivo animal experiments in voice research. These experiments have enabled visualization and analysis of dehydration effects, vocal fold scarring, bifurcation and chaotic vibrations, three-dimensional vibrations, aerodynamic effects, and mucosal wave propagation along the medial surface. Quantitative data will be shown to give an overview of measured laryngeal parameter values. As yet, a full understanding of all existing interactions in voice production has not been achieved, and thus, where possible, we try to indicate areas needing further study. Recent Findings A further motivation behind this review is to highlight recent findings and technologies related to the study of vocal fold dynamics and its applications. For example, studies of interactions between vocal tract airflow and generation of acoustics have recently shown that airflow superior to the glottis is governed by not only vocal fold dynamics but also by subglottal and supraglottal structures. In addition, promising new methods to investigate kinematics and dynamics have been reported recently, including dynamic optical coherence tomography, X-ray stroboscopy and three-dimensional reconstruction with laser projection systems. Finally, we touch on the relevance of vocal fold dynamics to clinical laryngology and to clinically-oriented research.

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“…It can be used for tasks involving vocal attack, coughing, throat clearing, laughing, and other activities involving rapid laryngeal maneuvers. In a recent study [16*], imaging with DKG demonstrated an ability to assign a signal type to various laryngeal vibrations. Braunschweig et al [17*] used HSV to develop a quantitative parameterization scheme of the phonatory onset, a new approach in developing objective methods for the diagnosis of functional dysphonia.…”

Section: High-speed Videoendoscopymentioning

confidence: 99%

State of the art laryngeal imaging: research and clinical implications

Deliyski

Hillman

2010

Current Opinion in Otolaryngology &Amp; Head &Amp; Neck Surgery

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Purpose of Review-This paper provides a review of the latest advances in videostroboscopy, videokymography and high-speed videoendoscopy, and outlines the development of new laryngeal imaging modalities based on optical coherence tomography, laser depth-kymography, and magnetic resonance imaging, published in the past 2 years. Videostroboscopy and Videokymography:Image quality has improved and several image processing and measurement techniques have been published. High-speed videoendoscopy:Significant progress has been made through increased sensitivity and frame rates of the cameras, and the development of facilitative playbacks, phonovibrography and several image segmentation and measurement methods. Clinical evidence was presented through applications in phonosurgery, comparisons with videostroboscopy, normative data, and better understanding of voice production. Optical coherence tomography:Latest developments allow for the capture of dynamic high resolution cross-sectional images of the vibrating vocal fold mucosa during phonation. Depth-kymography:New laser technique allowing recording of the vertical movements of the vocal folds during phonation in calibrated spatial values. Laryngeal magnetic resonance:New methods allow high-resolution imaging of laryngeal tissue microstructure, or measuring of dynamic laryngeal structures during phonation.Summary-The endoscopic laryngeal imaging techniques have made significant advances increasing their clinical value, while techniques providing new types of potentially clinically-relevant information have emerged.

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Typing Vocal Fold Vibratory Patterns in Excised Larynx Experiments Via Digital Kymography

Abstract: Imaging with DKG demonstrated an ability to assign a signal type to various laryngeal vibrations. Signal typing techniques utilizing direct observation of the vocal folds could be useful in determining valid methods for the analysis of vocal fold vibrations.

Cited by 12 publications

References 33 publications

Multiparameter comparison of injection laryngoplasty, medialization laryngoplasty, and arytenoid adduction in an excised larynx model

Multiparameter comparison of injection laryngoplasty, medialization laryngoplasty, and arytenoid adduction in an excised larynx model

Experiments on Analysing Voice Production: Excised (Human, Animal) and In Vivo (Animal) Approaches

State of the art laryngeal imaging: research and clinical implications

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