High-Speed Laryngeal Imaging Compared With Videostroboscopy in Healthy Subjects

Abstract

This preliminary study describes a range of normal values for vocal fold vibratory characteristics as recorded with laryngeal HSV, providing a basis for comparison of studies in patients with voice problems.

Comparison of Videostroboscopy to Stroboscopy Derived From High-Speed Videoendoscopy for Evaluating Patients With Vocal Fold Mass Lesions

“…ICC for left-right phase asymmetry was 0.33 for VS and 0.35 for SS, suggesting that left-right phase asymmetry is not reliably rated using stroboscopy, regardless of the signal used to determine phase selection. These findings are in accordance with other reports of low reliability for rating asymmetry using stroboscopic techniques Kelley, Colton, Casper Paseman, & Brewer, 2011;Kendall, 2009;Nawka & Konerding, 2012). Given the prevalence of left-right phase asymmetries in individuals who are vocally healthy and the fact that the magnitude of the asymmetry appears to be diagnostically significant for individuals with voice disorders (Bonilha, Deliyski, Whiteside, & Gerlach, 2012), it is important that this feature be reliably rated.…”

“…Given the prevalence of left-right phase asymmetries in individuals who are vocally healthy and the fact that the magnitude of the asymmetry appears to be diagnostically significant for individuals with voice disorders (Bonilha, Deliyski, Whiteside, & Gerlach, 2012), it is important that this feature be reliably rated. Findings from the current study, as well as reports from and Kendall (2009), which acknowledge VS's sensitivity to vocal fold asymmetries but question whether asymmetry can be specifically differentiated from other vibratory irregularities, suggest that stroboscopic technologies are inappropriate for the evaluation of left-right phase asymmetry. Instead, vocal fold asymmetry should be rated using high-speed imaging techniques (Nawka & Konerding, 2012).…”

How Do Teachers With Self-Reported Voice Problems Differ From Their Peers With Self-Reported Voice Health?

“…One reason is that this is the current standard technique at our department and another one is that it is a new tool in the voice clinic, and there is thus a need of compiling normative data from high-speed examinations [59]. Kendall [30] concludes that the use of high-speed filming offers benefits over standard videostroboscopy for studying aperiodic vocal fold motion which is often thought to be a contributing factor in voice disorders. All subjects could be examined which is probably due to the short time of the examination.…”

“…The final evaluation of the recordings was made in consensus by two experienced phoniatricians (with 29/20 years experience, and also well trained and experienced (11/7 yrs) in using High Speed Imaging in daily clinic) unaware of the grouping of the subjects. Following clinical practice, the guidelines by the Committee on Phoniatrics of the European Laryngological Society (ELS) [29], and suggestions 5 by Kendall [30] for high-speed imaging, a protocol was constructed to assess the following (brackets refer to the presentation of results):…”

Low-Cost High-Speed Imaging System for Observing Vocal Fold Vibration in Voice Disorders

“…For this purpose, videostroboscopy is widely used to show ‘illusory’ slow motion images of the vibrating vocal folds. However, its clinical use is limited because it relies on periodic vocal fold vibration and a stable phonation frequency to activate the strobe light [1]. While high-speed laryngeal imaging can visualize ‘true’ vocal fold vibration, the considerable acquisition costs and limited recording capacities of conventional systems for high-speed digital imaging have impeded the spread of this highly effective method.…”