Usefulness of Two-Dimensional Digital Kymography in Patients With Vocal Fold Scarring
| Autor: | Inho Bae, Soo-Geun Wang, Soon-Bok Kwon, Geun-Hyo Kim, Hee-June Park, Yeon Woo Lee |
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| Rok vydání: | 2019 |
| Předmět: |
Adult
Male medicine.medical_specialty Time Factors Fold (higher-order function) Video Recording Vocal Cords Audiology Vibration Cicatrix 030507 speech-language pathology & audiology 03 medical and health sciences Speech and Hearing 0302 clinical medicine Phonation Predictive Value of Tests Phase symmetry otorhinolaryngologic diseases medicine Humans In patient 030223 otorhinolaryngology Temporal information Aged Laryngoscopy business.industry Kymography Middle Aged Dysphonia LPN and LVN Biomechanical Phenomena medicine.anatomical_structure Otorhinolaryngology Vocal folds Female 0305 other medical science business High speed videoendoscopy |
| Zdroj: | Journal of Voice. 33:906-914 |
| ISSN: | 0892-1997 |
| Popis: | Summary Objective Although laryngeal videostroboscopy is widely utilized in the analysis of vocal fold vibrations, it is often difficult to identify patterns of vocal fold vibrations in patients with aperiodic voice signals due to failure of synchronization during laryngeal videostroboscopy examination. Therefore, the present study aimed to compare the usefulness of simultaneous two-dimensional digital kymography (2D DKG) and traditional DKG for the detection of changes in the pattern of vocal fold vibrations in patients with vocal fold scarring (VFS). Methods Seven patients with VFS and one normal subject underwent high-speed videoendoscopy (HSV). DKG and 2D DKG evaluations of vocal fold vibrations were performed simultaneously, following which both qualitative and quantitative analyses were performed. Results Simultaneous DKG and 2D DKG enabled observation of vibratory patterns as well as amplitude and phase symmetry. DKG revealed and provided temporal information regarding the pattern of vocal fold vibrations at sites of VFS. In contrast, 2D DKG provided real-time information regarding the pattern of vibrations for the whole vocal fold region and regions of increased stiffness, as well as spatial information regarding changes in this pattern. Conclusion Our findings indicate that 2D DKG enables the assessment of overall vocal fold vibrations, regardless of periodicity, and that simultaneous DKG and 2D DKG can be used to confirm abnormal patterns of vocal fold vibrations in patients with impaired flexibility and elasticity of the vocal folds. |
| Databáze: | OpenAIRE |
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