Analysis of High-Pitched Phonation Using Three-Dimensional Computed Tomography
| Autor: | Masaki Nomoto, Ryoji Tokashiki, Ray Motohashi, Fumimasa Toyomura, Hirokazu Nakamura, Hiroyuki Hiramatsu, Eriko Sakurai, Mamoru Suzuki |
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| Rok vydání: | 2012 |
| Předmět: |
Adult
Male Rotation Voice Quality Computed tomography Vocal Cords Cricoarytenoid Joint Cricoid Cartilage Speech and Hearing Imaging Three-Dimensional Phonation Cricoid cartilage otorhinolaryngologic diseases medicine Humans Computer Simulation Prospective Studies Aged medicine.diagnostic_test business.industry Biomechanics Gender Identity Arytenoid cartilage Anatomy Middle Aged respiratory system LPN and LVN Thyroid cartilage Biomechanical Phenomena medicine.anatomical_structure Otorhinolaryngology Vocal folds Radiographic Image Interpretation Computer-Assisted Female Tomography X-Ray Computed business Transsexualism psychological phenomena and processes Arytenoid Cartilage |
| Zdroj: | Journal of Voice. 26:548-554 |
| ISSN: | 0892-1997 |
| DOI: | 10.1016/j.jvoice.2011.08.015 |
| Popis: | Summary Objectives/Hypothesis Our aim was to use three-dimensional computed tomography (3DCT) to examine arytenoid cartilage movement during a high-pitched tone task. Study Design This was a prospective study. Methods This study included 14 patients with male-to-female gender identity disorder who had undergone 3DCT imaging for surgical simulation between January 2007 and May 2008. First, to prove that the phonation condition was indeed one of the high-pitched phonation, we confirmed the rotational movement of the thyroid cartilage, horizontal gliding movement of the inferior horn, and vocal fold elongation on a high-pitched tone task. Next, we detected the arytenoid cartilage positions of the joint during a comparison of comfortable and high-pitched phonations. We measured the movement direction and movement distance of the arytenoid cartilage. Results In all cases, the cricothyroid space became narrower (rotation movement), and we observed anterior gliding movement of the inferior horn. In all cases, elongation of the vocal folds by the high-pitched phonation was confirmed and the arytenoid cartilages were displaced both anteriorly and caudally from the position during comfortable phonation by the high-pitched tone task. Conclusions The arytenoid cartilages did not move posteriorly to elongate the vocal folds during high-pitched phonation. The arytenoid cartilages were pulled anteriorly and moved caudally because of tension associated with vocal fold elongation because of the task of high-pitched phonation. These results suggest that there are no movements at the cricoarytenoid joint that directly control the length of the vocal folds in accordance with pitch. |
| Databáze: | OpenAIRE |
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