Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/4312
Título: A theoretical study on modelling the respiratory tract with ladder networks by means of intrinsic fractal geometry
Autor: Ionescu, Clara M.
Muntean, Ionut
Machado, J. A. Tenreiro
Keyser, Robin De
Abrudean, Mihail
Palavras-chave: Fractal structure
Fractional calculus
Frequency domain
Input impedance
Ladder network
Respiratory system
Data: 2010
Editora: IEEE
Relatório da Série N.º: IEEE Transactions on Biomedical Engineering; Vol. 57, Issue 2
Resumo: Fractional order modeling of biological systems has received significant interest in the research community. Since the fractal geometry is characterized by a recurrent structure, the self-similar branching arrangement of the airways makes the respiratory system an ideal candidate for the application of fractional calculus theory. To demonstrate the link between the recurrence of the respiratory tree and the appearance of a fractional-order model, we develop an anatomically consistent representation of the respiratory system. This model is capable of simulating the mechanical properties of the lungs and we compare the model output with in vivo measurements of the respiratory input impedance collected in 20 healthy subjects. This paper provides further proof of the underlying fractal geometry of the human lungs, and the consequent appearance of constant-phase behavior in the total respiratory impedance.
Peer review: yes
URI: http://hdl.handle.net/10400.22/4312
ISSN: 0018-9294
Versão do Editor: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5223670
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