نتایج جستجو برای: stroboscopy

تعداد نتایج: 98  

Journal: :Transactions of the Optical Society 1905

Journal: :Journal of Clinical Otolaryngology Head and Neck Surgery 2015

Journal: :Hippokratia 2012
A Printza S Triaridis C Themelis J Constantinidis

BACKGROUND AND AIMS Voice disorders are common. The aim of this study is to evaluate the diagnostic value of stroboscopy for voice disorders related with benign pathology and apply results in evidence based health care. METHODS Prospective study. Tertiary care hospital. Voice Clinic. One hundred and fifty consecutive patients with an initial diagnosis of benign laryngeal disease or dysphonia ...

2010
Daryush D Mehta Dimitar D Deliyski Robert E Hillman

Purpose: The purpose of this article is to clear up misconceptions that have propagated in the clinical voice literature that inappropriately cite Talbot ’s law (1834) and the theory of persistence of vision as the scientific principles that underlie laryngeal stroboscopy. Method: After initial research into Talbot ’s (1834) original studies, it became clear that his experiments were not design...

2015
Pedersen

Background: Video stroboscopy has been the only way to visualize vocal fold movement for more than 50 years. Now we can capture the true movement of the vocal folds with high-speed recordings. Objective: A prospective randomized study was made to show if high speed films gave supplementary information that was better than video stroboscopy for diseases of the laryngeal function. Method: Randomi...

Journal: :The Annals of otology, rhinology, and laryngology 2016
Peak Woo

INTRODUCTION 4K video is a new format. At 3840 × 2160 resolution, it has 4 times the resolution of standard 1080 high definition (HD) video. Magnification can be done without loss of resolution. This study uses 4K video for video-stroboscopy. MATERIAL AND METHOD Forty-six patients were examined by conventional video-stroboscopy (digital 3 chip CCD) and compared with 4K video-stroboscopy. The ...

Journal: :Biomed. Signal Proc. and Control 2005
S. Bianchi Leonardo Bocchi Claudia Manfredi Giovanna Cantarella N. Migali

Vocal folds oscillation crucially influences all the basic qualities of voice, such as pitch and loudness, as well as the spectrum. Stroboscopy provides the standard view of the larynx. Videokymography is a new diagnostic tool developed to overcome specific limitations of stroboscopy in severely dysphonic patients with an aperiodic signal. It registers the movements of the vocal folds with a hi...

Journal: :Current opinion in otolaryngology & head and neck surgery 2012
Daryush D Mehta Robert E Hillman

PURPOSE OF REVIEW To summarize recent technological advancements and insight into the role of stroboscopy in laryngeal imaging. RECENT FINDINGS Although stroboscopic technology has not undergone major technological improvements, recent clarifications have been made to the application of stroboscopic principles to video-based laryngeal imaging. Also recent advances in coupling stroboscopy with...

Journal: :International journal of pediatric otorhinolaryngology 2005
Christopher J Hartnick Steven M Zeitels

OBJECTIVE Laryngo-stroboscopy remains as the clinical gold standard for assessing properties of the glottal phonatory and valvular function. This includes deficits of closure as well as mucosal wave irregularities secondary to abnormal zones of pliability and symmetry. Per-oral stroboscopy has technical limitations in children due to the size of the telescope and issues of patient compliance. H...

Journal: :Otolaryngology–Head and Neck Surgery 2011

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