Endoscopic evaluation of cilia motion on the respiratory epithelial by laser reflectometry utilizing optical fibers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21460%2F12%3A00209959" target="_blank" >RIV/68407700:21460/12:00209959 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Endoscopic evaluation of cilia motion on the respiratory epithelial by laser reflectometry utilizing optical fibers

Popis výsledku v původním jazyce

The oscillation frequency of the respiratory epithelium cilia (about 20Hz) is extremely sensitive to many factors (dust, gases, infection). This paper presents a laboratory method of laser reflectometry using standard optical fibers for lighting and collecting backscattered laser signal, which can be used due to their geometry in endoscope examination. The movement of cilia is modeled by the mirror with controlled oscillation. The light beam from a pigtailed semiconductor laser operating at wavelength of 640nm is coupled to the SM fiber and the reflected intensity is captured by the GI MM fiber. The detected backscattered signal carrying information about the frequency of the oscillation mirror is evaluated using fast Fourier transform (FFT). Measurements for three different surfaces were done and their analysis compared with the set frequency of mirror oscillations. The results give us information about minimum reflected intensity which can be processed by this method as well as the a

Název v anglickém jazyce

Endoscopic evaluation of cilia motion on the respiratory epithelial by laser reflectometry utilizing optical fibers

Popis výsledku anglicky

The oscillation frequency of the respiratory epithelium cilia (about 20Hz) is extremely sensitive to many factors (dust, gases, infection). This paper presents a laboratory method of laser reflectometry using standard optical fibers for lighting and collecting backscattered laser signal, which can be used due to their geometry in endoscope examination. The movement of cilia is modeled by the mirror with controlled oscillation. The light beam from a pigtailed semiconductor laser operating at wavelength of 640nm is coupled to the SM fiber and the reflected intensity is captured by the GI MM fiber. The detected backscattered signal carrying information about the frequency of the oscillation mirror is evaluated using fast Fourier transform (FFT). Measurements for three different surfaces were done and their analysis compared with the set frequency of mirror oscillations. The results give us information about minimum reflected intensity which can be processed by this method as well as the a

Druh

O - Ostatní výsledky

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

<a href="/cs/project/EE.2.3.20.0092" target="_blank" >EE.2.3.20.0092: Rozvoj výzkumného týmu BIO-OPT-XUV na FBMI ČVUT</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů