Centrális légúti radondepozíció és tisztulás

Kudela, Gábor and Balásházy, Imre and Madas, Balázs Gergely (2009) Centrális légúti radondepozíció és tisztulás. In: V. Magyar Radon Fórum. Pannon Egyetemi Kiadó, Veszprém, pp. 19-28. ISBN 978 963 9696 78 5


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Abstract Most of the lung cancers of former uranium miners developed in the large central airways. Current computational fluid dynamics calculations indicate high primary deposition in this region. However, the cellular burden of the radon progenies deposited in the deep regions of the lung and clears up by the mucus layer may contribute to the health effects found in airway generations 2–5. In this work, the deposition distribution of inhaled radon progenies was computed by a developed version of the stochastic lung model. A clearance model was constructed to simulate the up clearing fractions of attached and non-attached radon progenies in each bronchial airway generations. Finally, the ratio of the primarily deposited and the up cleared fraction has been calculated in airway generation level at different breathing patterns and mucus velocities. The characteristic input data of the clearance model are the deposition pattern, the velocity of the mucus per generation, the length of the airways and the half life of radon progenies. Based on the results, in the central airways, the radiation burden of the up clearing, more deeply deposited, radon progenies can significantly be higher than the burden of the primarily deposited fraction in these central airways.

Item Type: Book Section
Subjects: R Medicine / orvostudomány > RA Public aspects of medicine / orvostudomány társadalmi szerepe > RA0421 Public health. Hygiene. Preventive Medicine / közegészségügy, higiénia, betegség-megelőzés
R Medicine / orvostudomány > RC Internal medicine / belgyógyászat > RC0254 Neoplasms. Tumors. Oncology (including Cancer) / daganatok, tumorok, onkológia
T Technology / alkalmazott, műszaki tudományok > TD Environmental technology. Sanitary engineering / környezetvédelem, hulladékkezelés, egészségügyi mérnöki technika (ivóvízellátási és szennyvízkezelési technika)
T Technology / alkalmazott, műszaki tudományok > TK Electrical engineering. Electronics Nuclear engineering / elektrotechnika, elektronika, atomtechnika
Depositing User: MTMT SWORD
Date Deposited: 20 May 2014 08:18
Last Modified: 31 Mar 2023 07:52

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