Modelling And Vibration Analysis Of Alveolar Resonance Mechanism Of Ultrasound-Induced Lung Haemorrhage

The most widely studied biological adverse effect of the diagnostic ultrasound is the ultrasound-induced lung haemorrhage. The ultrasound-induced lung haemorrhage has been observed in various experimental studies on animals. Nevertheless, the actual mechanism by which the ultrasound-induced lung hae...

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Main Author:	Devadason, John Jabaraj
Format:	Thesis
Language:	English
Published:	2013
Subjects:	QC1 Physics (General)
Online Access:	http://eprints.usm.my/46118/1/John%20Jabaraj%20AL%20Devadason24.pdf
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spelling	my-usm-ep.461182020-02-07T02:16:52Z Modelling And Vibration Analysis Of Alveolar Resonance Mechanism Of Ultrasound-Induced Lung Haemorrhage 2013-10 Devadason, John Jabaraj QC1 Physics (General) The most widely studied biological adverse effect of the diagnostic ultrasound is the ultrasound-induced lung haemorrhage. The ultrasound-induced lung haemorrhage has been observed in various experimental studies on animals. Nevertheless, the actual mechanism by which the ultrasound-induced lung haemorrhage occurs still remains undetermined and unproven. One of the proposed but unexplored mechanisms is the alveolar resonance mechanism. The hypothetical alveolar resonance mechanism is proposed as the forced vibration and resonance of the alveolar structure by the external ultrasound waves. This modelling and vibration analysis study, theoretically investigates the alveolar resonance mechanism and its capability for producing the ultrasound-induced lung haemorrhage. Firstly, the facet of the alveolar wall was modelled as square and circular membranes with fixedboundary. Then, the application of the linear theory of vibration together with the laws of linear elasticity, unto the membrane models, produced the equations of fundamental frequency and threshold pressure. The fundamental frequency of each membrane model represents the natural frequency of the alveolar structure at which the alveolar resonance mechanism may occur. 2013-10 Thesis http://eprints.usm.my/46118/ http://eprints.usm.my/46118/1/John%20Jabaraj%20AL%20Devadason24.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Sains Fizik
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	QC1 Physics (General)
spellingShingle	QC1 Physics (General) Devadason, John Jabaraj Modelling And Vibration Analysis Of Alveolar Resonance Mechanism Of Ultrasound-Induced Lung Haemorrhage
description	The most widely studied biological adverse effect of the diagnostic ultrasound is the ultrasound-induced lung haemorrhage. The ultrasound-induced lung haemorrhage has been observed in various experimental studies on animals. Nevertheless, the actual mechanism by which the ultrasound-induced lung haemorrhage occurs still remains undetermined and unproven. One of the proposed but unexplored mechanisms is the alveolar resonance mechanism. The hypothetical alveolar resonance mechanism is proposed as the forced vibration and resonance of the alveolar structure by the external ultrasound waves. This modelling and vibration analysis study, theoretically investigates the alveolar resonance mechanism and its capability for producing the ultrasound-induced lung haemorrhage. Firstly, the facet of the alveolar wall was modelled as square and circular membranes with fixedboundary. Then, the application of the linear theory of vibration together with the laws of linear elasticity, unto the membrane models, produced the equations of fundamental frequency and threshold pressure. The fundamental frequency of each membrane model represents the natural frequency of the alveolar structure at which the alveolar resonance mechanism may occur.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Devadason, John Jabaraj
author_facet	Devadason, John Jabaraj
author_sort	Devadason, John Jabaraj
title	Modelling And Vibration Analysis Of Alveolar Resonance Mechanism Of Ultrasound-Induced Lung Haemorrhage
title_short	Modelling And Vibration Analysis Of Alveolar Resonance Mechanism Of Ultrasound-Induced Lung Haemorrhage
title_full	Modelling And Vibration Analysis Of Alveolar Resonance Mechanism Of Ultrasound-Induced Lung Haemorrhage
title_fullStr	Modelling And Vibration Analysis Of Alveolar Resonance Mechanism Of Ultrasound-Induced Lung Haemorrhage
title_full_unstemmed	Modelling And Vibration Analysis Of Alveolar Resonance Mechanism Of Ultrasound-Induced Lung Haemorrhage
title_sort	modelling and vibration analysis of alveolar resonance mechanism of ultrasound-induced lung haemorrhage
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Fizik
publishDate	2013
url	http://eprints.usm.my/46118/1/John%20Jabaraj%20AL%20Devadason24.pdf
_version_	1747821614336049152

Modelling And Vibration Analysis Of Alveolar Resonance Mechanism Of Ultrasound-Induced Lung Haemorrhage

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