Publication detail
Analysis of fiber deposition using automatic image processing method
BĚLKA, M. LÍZAL, F. JEDELSKÝ, J. JÍCHA, M.
Czech title
Analýza depozice vláken využívající metodu automatického zpracování obrazu
English title
Analysis of fiber deposition using automatic image processing method
Type
conference paper
Language
en
Original abstract
Fibers are permanent threat for a human health. They have an ability to penetrate deeper in the human lung, deposit there and cause health hazards, e.g. lung cancer. An experiment was carried out to gain more data about deposition of fibers. Monodisperse glass fibers were delivered into a realistic model of human airways with an inspiratory flow rate of 30 l/min. Replica included human airways from oral cavity up to seventh generation of branching. Deposited fibers were rinsed from the model and placed on nitrocellulose filters after the delivery. A new novel method was established for deposition data acquisition. The method is based on a principle of image analysis. The images were captured by high definition camera attached to a phase contrast microscope. Results of new method were compared with standard PCM method, which follows methodology NIOSH 7400, and a good match was found. The new method was found applicable for evaluation of fibers and deposition fraction and deposition efficiency were calculated afterwards.
Czech abstract
Vlákna jsou permanentní hrozbou pro lidské zdraví. Při vdechnutí mají schopnost proniknout hlouběji do lidských plic, usadit se tam a způsobit zdravotní problémy např. rakovinu plic. Byl proveden experiment, aby se získalo více dat o depozici vláken. Monodisperzní skleněná vlákna byla transportována do realistického modelu dýchacích cest při objemovém průtoku 30 l/min. Model se skládal z dýchacích cest počínajících ústní dutinou až do sedmé generace větvení. Po transportu a usazení byla vlákna z modelu vypláchnuta a přefiltrována přes nitrocelulózové filtry. K získání dat o depozici byla použita nová metoda, která byla založena na principu analýzy snímků. Snímky byly pořízeny kamerou s vysokým rozlišením, která byla připojena k mikroskopu s fázovým kontrastem. Výsledky nové metody se porovnaly se standartní metodou, která vychází z metodiky NIOSH 7400 a byla objevena dobrá shoda. Nová metoda se tedy zdá použitelná k vyhodnocování filtrů s vlákny . Po vyhodnocení hodnot depozice byly spočteny depoziční účinnost a depoziční frakce.
English abstract
Fibers are permanent threat for a human health. They have an ability to penetrate deeper in the human lung, deposit there and cause health hazards, e.g. lung cancer. An experiment was carried out to gain more data about deposition of fibers. Monodisperse glass fibers were delivered into a realistic model of human airways with an inspiratory flow rate of 30 l/min. Replica included human airways from oral cavity up to seventh generation of branching. Deposited fibers were rinsed from the model and placed on nitrocellulose filters after the delivery. A new novel method was established for deposition data acquisition. The method is based on a principle of image analysis. The images were captured by high definition camera attached to a phase contrast microscope. Results of new method were compared with standard PCM method, which follows methodology NIOSH 7400, and a good match was found. The new method was found applicable for evaluation of fibers and deposition fraction and deposition efficiency were calculated afterwards.
Keywords in Czech
aerosol, depozice, plíce, vlákna, depoziční frakce, depoziční účinnost, zpracování obrazu, fázově-kontrastní mikroskopie
Keywords in English
aerosol, deposition, human lungs, fibers, deposition fraction and efficiency, image analysis, phase-contrast microscopy
RIV year
2012
Released
09.04.2013
Publisher
EDP Sciences
Location
FRANCE
ISBN
978-80-7372-912-7
ISSN
2100-014X
Book
International Conference Experimental Fluid Mechanics 2012 Conference proceedings
Volume
45
Number
1
Pages from–to
1–4
Pages count
4
BIBTEX
@inproceedings{BUT95365,
author="Miloslav {Bělka} and František {Lízal} and Jan {Jedelský} and Miroslav {Jícha},
title="Analysis of fiber deposition using automatic image processing method",
booktitle="International Conference Experimental Fluid Mechanics 2012 Conference proceedings",
year="2013",
volume="45",
number="1",
month="April",
pages="1--4",
publisher="EDP Sciences",
address="FRANCE",
isbn="978-80-7372-912-7",
issn="2100-014X"
}