| Three-dimensional endoscopic images of vocal fold paralysis by computed tomography. | |
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MedLine Citation:
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PMID: 10448736 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To describe characteristics of 3-dimensional (3-D) computed tomographic (CT) endoscopic images of the larynx in unilateral vocal fold paralysis and the changes of the paralyzed vocal fold after phonosurgery as indicated by 3-D CT endoscopy. SETTING: A university medical center. PATIENTS: Twelve consecutive patients with unilateral vocal fold paralysis who underwent helical CT examination. Five of them underwent the CT examination before and after phonosurgical treatment. INTERVENTIONS: Three patients underwent arytenoid adduction, and 2 underwent type 1 thyroplasty. MAIN OUTCOME MEASURES: "Sagging," defined as caudal displacement of the vocal fold; and "thinning," defined as a decrease in the vertical thickness of the vocal fold and expansion of the ventricle on the affected side, were evaluated. RESULTS: Excessive motion artifacts in one patient prevented detailed description of his 3-D images. Sagging and thinning of the vocal fold and expansion of the ventricle on the affected side were noted on 6, 11, and 8 occasions, respectively. Adduction or augmentation of the paralyzed vocal fold after phonosurgery was observed in 3-D CT endoscopic images when displayed with bony densities. CONCLUSIONS: The use of 3-D CT endoscopy enables description of 3-D characteristics of unilateral vocal fold paralysis and supplements stroboscopic findings. Furthermore, CT endoscopic images, when simultaneously displayed with bony densities, may help in evaluating the effects of phonosurgical treatment of the paralyzed vocal fold. |
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Authors:
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E Yumoto; T Sanuki; M Hyodo |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Archives of otolaryngology--head & neck surgery Volume: 125 ISSN: 0886-4470 ISO Abbreviation: Arch. Otolaryngol. Head Neck Surg. Publication Date: 1999 Aug |
Date Detail:
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Created Date: 1999-08-24 Completed Date: 1999-08-24 Revised Date: 2006-03-28 |
Medline Journal Info:
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Nlm Unique ID: 8603209 Medline TA: Arch Otolaryngol Head Neck Surg Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 883-90 Citation Subset: AIM; IM |
Affiliation:
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Department of Otolaryngology-Head and Neck Surgery, Kumamoto University School of Medicine, Japan. yumoto@gpo.kumamoto-u.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Female Humans Laryngoscopy* Male Middle Aged Tomography, X-Ray Computed* Vocal Cord Paralysis / physiopathology, radiography*, surgery Vocal Cords / physiopathology, radiography |
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