15 research outputs found
Effect of singing training on total laryngectomees wearing a tracheoesophageal voice prosthesis
Thaumarchaeotes abundant in refinery nitrifying sludges express <em>amoA</em> but are not obligate autotrophic ammonia oxidizers
CaracterĂsticas da fonetografia em indivĂduos com equilĂbrio dentofacial pĂłs-muda vocal Characteristics of phonetography on subjects with dentofacial balance in vocal post mutation
OBJETIVO: caracterizar, por meio de fonetografia, o perfil da extensĂŁo vocal em indivĂduos sem alteraçÔes pĂłs-muda vocal e equilĂbrio dentofacial. MĂTODO: participaram deste estudo 15 homens com idades entre 14 e 35 anos com pĂłs-muda vocal. Eles responderam a um questionĂĄrio especĂfico, e tambĂ©m foram submetidos a uma avaliação antropomĂ©trica da face, a avaliação dento-oclusal, o exame fonetografia e tambĂ©m a uma anĂĄlise da frequĂȘncia fundamental habitual da voz. RESULTADOS: frequĂȘncia fundamental mĂnima: 89Hz ± 3Hz ou 29st ±14st; FrequĂȘncia fundamental mĂĄxima: 665Hz±179Hz ou 63st±5st; ExtensĂŁo Vocal: 34st±6st; Intensidade mĂnima: 66 dB ± 3dB; Intensidade mĂĄxima: 114dB ± 5dB; ExtensĂŁo DinĂąmica MĂĄxima: 42dB ± 4dB, Ărea do Fonetograma: 936,4 dB.st ± 258,8 dB.st ou 42,1 cmÂČ Â± 11,6 cmÂČ; FrequĂȘncia Fundamental Habitual para a vogal "a": 111,26 Hz ± 15,24 Hz. CONCLUSĂO: apesar de os estudos nacionais e internacionais apresentados neste trabalho nĂŁo considerarem a condição dentofacial dos indivĂduos, os resultados foram semelhantes.<br>PURPOSE: to characterize, by means of phonetography, the profile of voice extension in individuals with post changes, dentofacial balanced voice. METHOD: fifteen male individuals participated in this study, in vocal postmutation, aged between 14 and 35 years old. They answered a specific self-response questionnaire, and they were also submitted to an anthropometric assessment of the face, dento-occlusal evaluation, phonetography examination and to an analysis of the usual fundamental frequency of the voice. RESULTS: minimum Fundamental Frequency: =89Hz±3Hz or =29st±14st, Maximum Fundamental Frequency: X=665Hz±179Hz or X=63st±5, Voice Extension: X=34st±6st, Minimum Intensity: X=66dB±3dB, Maximum Intensity: X=114dB±5dB, Maximum Dynamic Extension: X=42dB±4dB, Phonetogram Area: X=936,4dB.st±258,8dB.st or X=42,1cmÂȱ11,6cmÂČ, Usual Fundamental Frequency of the "a" vowel: X=111,26Hz±15,24Hz. CONCLUSION: although national and international studies presented in this work do not consider the dentofacial condition of the subjects, the results were very similar
Three-dimensional imaging of the larynx for pre-operative planning of laryngeal framework surgery
Modern laryngeal framework surgery (LFS) requires an exact understanding of the laryngeal biomechanics and precise pre-operative planning, for which bi-planar imaging is not sufficient. The aim of the study was to test whether MIMICS, a commercially available software package for three-dimensional (3D) rendering of high-resolution computerised tomography (HRCT), is suitable for 3D imaging of the larynx, analysis of laryngeal biomechanics and pre-operative planning. We examined four cadaver larynx and one patient larynx. In the five larynges, all relevant structures and landmarks could be 3D visualised. Superimposing of two HRCT scans shows that when the arytenoids move from 'respiration' to 'phonation', they perform a rotating, translating and tilting motion. Moreover, we could demonstrate that the vocal fold elongates by 7% with cricothyroid approximation. We conclude that MIMCS is well suited for 3D imaging of the larynx, analysis of laryngeal biomechanics and pre-operative planning of LFS procedures