نتایج جستجو برای: vocal mass lesions
تعداد نتایج: 654953 فیلتر نتایج به سال:
OBJECTIVE Laryngomalacia is the most common cause of congenital stridor. Laryngomalacia may be associated with other structural and functional airway lesions. While previous studies suggested a 10-45% rate of synchronous airway lesions (SALs), the exact rate and it's clinical significance is unknown. The purpose of this study was to determine the prevalence of SALs below the glottic level in co...
several lesions (inflammatory, neoplastic and congenital) can involve in the skull base. the role of imaging is to detect the location and extension of lesion, determine mass and mass like lesions, differentiate benign from malignant tumors, detect invasion to adjacent structures and make decision in surgical planning. skull base divides to anterior, middle and posterior cranial fossa and some ...
A theory of vocal fold oscillation is developed on the basis of the body-cover hypothesis. The cover is represented by a distributed surface layer that can propagate a mucosal surface wave. Linearization of the surface-wave displacement and velocity, and further small-amplitude approximations, yields closed-form expressions for conditions of oscillation. The theory predicts that the lung pressu...
Eighty-one patients with long-term tracheostomy tubes (mean duration, 4.9 months) were examined via fiberoptic bronchoscopy prior to decannulation. Obstructive airway lesions were observed in 54 patients (67 percent). All tracheal lesions were anatomically located proximal to the stoma. No cuff lesions were observed. The two most commonly observed lesions were tracheal granuloma (60 percent) an...
Animal vocalisations play a role in individual recognition and mate choice. In nesting penguins, acoustic variation in vocalisations originates from distinctiveness in the morphology of the vocal apparatus. Using the source-filter theory approach, we investigated vocal individuality cues and correlates of body size and mass in the ecstatic display songs the Humboldt and Magellanic penguins. We ...
35 In adult male zebra finches, transecting the vocal nerve causes previously stable (i.e., 36 crystallized) song to slowly degrade, presumably because of the resulting distortion in 37 auditory feedback. How and where distorted feedback interacts with song motor 38 networks to induce this process of song decrystallization remains unknown. The song 39 premotor nucleus HVC is a potential site wh...
The impact of vocal hyperfunction on relative fundamental frequency during voicing offset and onset.
PURPOSE This study tested the hypothesis that individuals with vocal hyperfunction would show decreases in relative fundamental frequency (RFF) surrounding a voiceless consonant. METHOD This retrospective study of 2 clinical databases used speech samples from 15 control participants and women with hyperfunction-related voice disorders: 82 prior to treatment (muscle tension dysphonia, n=22; vo...
OBJECTIVE/HYPOTHESIS Certain lesions appear to occur predominantly in one gender or in younger or older patients. We examined a large sample from a treatment-seeking population to describe gender and age associations of an array of benign vocal fold lesions. STUDY DESIGN Retrospective review. METHODS The medical records and evaluations of all adult patients presenting for care over a 5-year...
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