Boundary element model for simulating sound propagation and source localization within the lungs.

Boundary element model for simulating sound propagation and source localization within the lungs. Research Abstract Details 

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Boundary element model for simulating sound propagation and source localization within the lungs. Abstract Text:

M B Ozer,S Acikgoz,T J Royston,H A Mansy,R H Sandler,

An acoustic boundary element (BE) model is used to simulate sound propagation in the lung parenchyma. It is computationally validated and then compared with experimental studies on lung phantom models. Parametric studies quantify the effect of different model parameters on the resulting acoustic field within the lung phantoms. The BE model is then coupled with a source localization algorithm to predict the position of an acoustic source within the phantom. Experimental studies validate the BE-based source localization algorithm and show that the same algorithm does not perform as well if the BE simulation is replaced with a free field assumption that neglects reflections and standing wave patterns created within the finite-size lung phantom. The BE model and source localization procedure are then applied to actual lung geometry taken from the National Library of Medicine's Visible Human Project. These numerical studies are in agreement with the studies on simpler geometry in that use of a BE model in place of the free field assumption alters the predicted acoustic field and source localization results. This work is relevant to the development of advanced auscultatory techniques that utilize multiple noninvasive sensors to construct acoustic images of sound generation and transmission to identify pathologies.

Boundary element model for simulating sound propagation and source localization within the lungs. Publishing Authors By Initials

MB Ozer,S Acikgoz,TJ Royston,HA Mansy,RH Sandler,

For similar natural sciences: chemistry: chemistry, physical: viscosity research abstracts see: natural sciences: chemistry: chemistry, physical: viscosity research

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Boundary element model for simulating sound propagation and source localization within the lungs. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: The Journal of the Acoustical Society of America

VOLUME: 122

Page Numbers: 657-61

Journal Abbreviation: J. Acoust. Soc. Am.

ISSN: 1520-8524

DAY: 3

MONTH: Jul

YEAR: 2007

Boundary element model for simulating sound propagation and source localization within the lungs. Information

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LANGUAGE: eng

NlmUniqueID: 7503051

Boundary element model for simulating sound propagation and source localization within the lungs. Keywords Mesh Terms:

KEYWORDS: Viscosity

MESH TERMS: anatomy & histology

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Grant and Affiliation Information for Boundary element model for simulating sound propagation and source localization within the lungs.

AFFILIATION: Baxter Healthcare Corporation, Deerfield, Illinois 60015, USA.

Country: United States

AGENCY: United States NHLBI

GRANT: HL061108

ACRONYM: HL

MEDLINETA: J Acoust Soc Am

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