Frame by Frame Analysis of Glottic Insufficiency Using Laryngovideostroboscopy
Glottic insufficiency (GI) can be either grossly obvious or subtle in its presentation. Subtle GI is demonstrated by various Laryngovideostroboscopic (LVS) clues, including complete but “short” phase closure of the true vocal folds (VFs) during the glottic cycle. We used the frame by frame analysis...
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| Published in: | Journal of voice Vol. 26; no. 2; pp. 220 - 225 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
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United States
Mosby, Inc
01.03.2012
Elsevier Science Ltd |
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| ISSN: | 0892-1997, 1873-4588, 1873-4588 |
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| Abstract | Glottic insufficiency (GI) can be either grossly obvious or subtle in its presentation. Subtle GI is demonstrated by various Laryngovideostroboscopic (LVS) clues, including complete but “short” phase closure of the true vocal folds (VFs) during the glottic cycle. We used the frame by frame analysis (FBFA) technique to evaluate its effectiveness in objectively contributing to the diagnosis of subtle GI in patients with atrophic and/or paretic VFs. This article intends to formally present the methods and intentions of the FBFA technique and report our findings using FBFA on subjects with clinically diagnosed GI and normal volunteers.
Retrospective review and demonstration of technique.
Forty-four subjects with a prior clinical diagnosis of true VF atrophy (25/44) and/or paresis (19/44) and five normal volunteers were identified. Using the FBFA technique, each subject’s average percentage of closed frames per glottic cycle was recorded.
Subjects with atrophy spent 32.4% of the frames of the glottic cycle in the closed phase, subjects with paresis spent 35.7% of the frames closed, and normal subjects spent 50.2% of the frames closed.
FBFA appears to be a simple objective method for the novice or experienced LVS interpreter, by which one can suspect subtle GI. Because of the inherent physical properties by which LVS gives an “illusionary” representation of the glottic cycle, the FBFA technique remains a theoretical tool. Future studies using high-speed digital imaging are needed to validate this useful technique. |
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| AbstractList | Summary Objectives/Hypothesis Glottic insufficiency (GI) can be either grossly obvious or subtle in its presentation. Subtle GI is demonstrated by various Laryngovideostroboscopic (LVS) clues, including complete but “short” phase closure of the true vocal folds (VFs) during the glottic cycle. We used the frame by frame analysis (FBFA) technique to evaluate its effectiveness in objectively contributing to the diagnosis of subtle GI in patients with atrophic and/or paretic VFs. This article intends to formally present the methods and intentions of the FBFA technique and report our findings using FBFA on subjects with clinically diagnosed GI and normal volunteers. Study Design Retrospective review and demonstration of technique. Methods Forty-four subjects with a prior clinical diagnosis of true VF atrophy (25/44) and/or paresis (19/44) and five normal volunteers were identified. Using the FBFA technique, each subject’s average percentage of closed frames per glottic cycle was recorded. Results Subjects with atrophy spent 32.4% of the frames of the glottic cycle in the closed phase, subjects with paresis spent 35.7% of the frames closed, and normal subjects spent 50.2% of the frames closed. Conclusions FBFA appears to be a simple objective method for the novice or experienced LVS interpreter, by which one can suspect subtle GI. Because of the inherent physical properties by which LVS gives an “illusionary” representation of the glottic cycle, the FBFA technique remains a theoretical tool. Future studies using high-speed digital imaging are needed to validate this useful technique. Glottic insufficiency (GI) can be either grossly obvious or subtle in its presentation. Subtle GI is demonstrated by various Laryngovideostroboscopic (LVS) clues, including complete but “short” phase closure of the true vocal folds (VFs) during the glottic cycle. We used the frame by frame analysis (FBFA) technique to evaluate its effectiveness in objectively contributing to the diagnosis of subtle GI in patients with atrophic and/or paretic VFs. This article intends to formally present the methods and intentions of the FBFA technique and report our findings using FBFA on subjects with clinically diagnosed GI and normal volunteers. Retrospective review and demonstration of technique. Forty-four subjects with a prior clinical diagnosis of true VF atrophy (25/44) and/or paresis (19/44) and five normal volunteers were identified. Using the FBFA technique, each subject’s average percentage of closed frames per glottic cycle was recorded. Subjects with atrophy spent 32.4% of the frames of the glottic cycle in the closed phase, subjects with paresis spent 35.7% of the frames closed, and normal subjects spent 50.2% of the frames closed. FBFA appears to be a simple objective method for the novice or experienced LVS interpreter, by which one can suspect subtle GI. Because of the inherent physical properties by which LVS gives an “illusionary” representation of the glottic cycle, the FBFA technique remains a theoretical tool. Future studies using high-speed digital imaging are needed to validate this useful technique. Glottic insufficiency (GI) can be either grossly obvious or subtle in its presentation. Subtle GI is demonstrated by various Laryngovideostroboscopic (LVS) clues, including complete but "short" phase closure of the true vocal folds (VFs) during the glottic cycle. We used the frame by frame analysis (FBFA) technique to evaluate its effectiveness in objectively contributing to the diagnosis of subtle GI in patients with atrophic and/or paretic VFs. This article intends to formally present the methods and intentions of the FBFA technique and report our findings using FBFA on subjects with clinically diagnosed GI and normal volunteers. [PUBLICATION ABSTRACT] Objectives/Hypothesis: Glottic insufficiency (GI) can be either grossly obvious or subtle in its presentation. Subtle GI is demonstrated by various Laryngovideostroboscopic (LVS) clues, including complete but "short" phase closure of the true vocal folds (VFs) during the glottic cycle. We used the frame by frame analysis (FBFA) technique to evaluate its effectiveness in objectively contributing to the diagnosis of subtle GI in patients with atrophic and/or paretic VFs. This article intends to formally present the methods and intentions of the FBFA technique and report our findings using FBFA on subjects with clinically diagnosed GI and normal volunteers. Study Design: Retrospective review and demonstration of technique. Methods: Forty-four subjects with a prior clinical diagnosis of true VF atrophy (25/44) and/or paresis (19/44) and five normal volunteers were identified. Using the FBFA technique, each subject's average percentage of closed frames per glottic cycle was recorded. Results: Subjects with atrophy spent 32.4% of the frames of the glottic cycle in the closed phase, subjects with paresis spent 35.7% of the frames closed, and normal subjects spent 50.2% of the frames closed. Conclusions: FBFA appears to be a simple objective method for the novice or experienced LVS interpreter, by which one can suspect subtle GI. Because of the inherent physical properties by which LVS gives an "illusionary" representation of the glottic cycle, the FBFA technique remains a theoretical tool. Future studies using high-speed digital imaging are needed to validate this useful technique. Adapted from the source document Glottic insufficiency (GI) can be either grossly obvious or subtle in its presentation. Subtle GI is demonstrated by various Laryngovideostroboscopic (LVS) clues, including complete but "short" phase closure of the true vocal folds (VFs) during the glottic cycle. We used the frame by frame analysis (FBFA) technique to evaluate its effectiveness in objectively contributing to the diagnosis of subtle GI in patients with atrophic and/or paretic VFs. This article intends to formally present the methods and intentions of the FBFA technique and report our findings using FBFA on subjects with clinically diagnosed GI and normal volunteers.OBJECTIVES/HYPOTHESISGlottic insufficiency (GI) can be either grossly obvious or subtle in its presentation. Subtle GI is demonstrated by various Laryngovideostroboscopic (LVS) clues, including complete but "short" phase closure of the true vocal folds (VFs) during the glottic cycle. We used the frame by frame analysis (FBFA) technique to evaluate its effectiveness in objectively contributing to the diagnosis of subtle GI in patients with atrophic and/or paretic VFs. This article intends to formally present the methods and intentions of the FBFA technique and report our findings using FBFA on subjects with clinically diagnosed GI and normal volunteers.Retrospective review and demonstration of technique.STUDY DESIGNRetrospective review and demonstration of technique.Forty-four subjects with a prior clinical diagnosis of true VF atrophy (25/44) and/or paresis (19/44) and five normal volunteers were identified. Using the FBFA technique, each subject's average percentage of closed frames per glottic cycle was recorded.METHODSForty-four subjects with a prior clinical diagnosis of true VF atrophy (25/44) and/or paresis (19/44) and five normal volunteers were identified. Using the FBFA technique, each subject's average percentage of closed frames per glottic cycle was recorded.Subjects with atrophy spent 32.4% of the frames of the glottic cycle in the closed phase, subjects with paresis spent 35.7% of the frames closed, and normal subjects spent 50.2% of the frames closed.RESULTSSubjects with atrophy spent 32.4% of the frames of the glottic cycle in the closed phase, subjects with paresis spent 35.7% of the frames closed, and normal subjects spent 50.2% of the frames closed.FBFA appears to be a simple objective method for the novice or experienced LVS interpreter, by which one can suspect subtle GI. Because of the inherent physical properties by which LVS gives an "illusionary" representation of the glottic cycle, the FBFA technique remains a theoretical tool. Future studies using high-speed digital imaging are needed to validate this useful technique.CONCLUSIONSFBFA appears to be a simple objective method for the novice or experienced LVS interpreter, by which one can suspect subtle GI. Because of the inherent physical properties by which LVS gives an "illusionary" representation of the glottic cycle, the FBFA technique remains a theoretical tool. Future studies using high-speed digital imaging are needed to validate this useful technique. |
| Author | McRay, Marissa Carroll, Thomas L. Gherson, Shirley Wu, Yi-Hsuan E. |
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| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/21621381$$D View this record in MEDLINE/PubMed |
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| Cites_doi | 10.1016/j.otc.2007.05.012 10.1044/1092-4388(2009/08-0244) 10.1016/S0892-1997(96)80045-2 10.1067/mhn.2002.128894 10.1097/00005537-199603001-00001 10.1016/j.otohns.2009.01.026 10.1097/MOO.0b013e32814b0875 10.1002/lary.20656 10.1016/j.jvoice.2005.03.010 10.1016/S0892-1997(02)00097-8 10.1001/archotol.131.4.356 10.1016/S0194-5998(00)70097-0 10.1016/j.jvoice.2008.11.001 10.1016/j.jvoice.2007.03.005 |
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| Keywords | Vocal fold atrophy Stroboscopy Laryngovideostroboscopy Vocal fold injection Videostroboscopy Vocal cord paresis Vocal fold paresis Laryngology Muscle tension dysphonia Glottic insufficiency Secondary muscle tension dysphonia Frame by frame analysis Vocal cord atrophy Glottal insufficiency Vocal cord injection Primary muscle tension dysphonia Laryngeal EMG Voice Laryngeal electromyography |
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| Snippet | Glottic insufficiency (GI) can be either grossly obvious or subtle in its presentation. Subtle GI is demonstrated by various Laryngovideostroboscopic (LVS)... Summary Objectives/Hypothesis Glottic insufficiency (GI) can be either grossly obvious or subtle in its presentation. Subtle GI is demonstrated by various... Objectives/Hypothesis: Glottic insufficiency (GI) can be either grossly obvious or subtle in its presentation. Subtle GI is demonstrated by various... |
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| SubjectTerms | Adult Aged Aged, 80 and over Analysis Closure Diagnosis Dysphonia Electromyography Female Frame analysis Frame by frame analysis Glottal insufficiency Glottic insufficiency Glottis - physiopathology Humans Laryngeal electromyography Laryngeal EMG Laryngology Laryngoscopy Laryngovideostroboscopy Larynx Male Medical diagnosis Middle Aged Muscle tension dysphonia Otolaryngology Patients Physiology Primary muscle tension dysphonia Secondary muscle tension dysphonia Speech Pathology Stroboscopy Videostroboscopy Vocal cord atrophy Vocal cord injection Vocal cord paresis Vocal fold atrophy Vocal fold injection Vocal fold paresis Vocal Folds Voice Voice Disorders Voice Disorders - diagnosis Voice Disorders - physiopathology Volunteers |
| Title | Frame by Frame Analysis of Glottic Insufficiency Using Laryngovideostroboscopy |
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