Obstruction identification in branching compliant tubes with application to airway passages

Du, Y.; Al‐Jumaily, Ahmed M.

doi:10.1016/j.jbiomech.2005.04.013

Cited by 2 publications

(2 citation statements)

References 19 publications

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“…Several previous studies led to empirical correlations which are useful in determining, whether obstructions are present [4][5][6][7][8]. However, some other researchers used the impedance technique to investigate and identify occlusions and constrictions in tube-like element or branching networks [9][10][11]. Other models, which include the Navier-Stokes equations for flow in constricted elastic tubes or arterial networks, are available [12].…”

Section: Occlusion and Severe Stenosis Identification In Arterial Systemmentioning

confidence: 99%

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Occlusion and Severe Stenosis Identification in Arterial System

Abdessalem

Saleh

2016

Int. Ann. Sci.

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A B S T R A C TIn the present work, an appropriate method allowing accurate determinations of the position of arterial severe stenosis and full obstruction in the arterial vessels has been developed. This method requires measurements of instantaneous flow velocity and arterial radius at two sites in the arterial tree. The accuracy of the present method for different hemodynamic conditions has been examined. Numerical simulation and Womersley theory of the present model have been investigated. Realistic condition of hemodynamic parameters with noise has been simulated. Also, the effects of stenosis severities and the sites of occlusion have been considered. The results of present work show the location of stenosis and occlusion can be obtained by reasonable accuracy.

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Section: Occlusion and Severe Stenosis Identification In Arterial Systemmentioning

confidence: 99%

“…n cl f n cl n cl   (11) (13) Where ′ = − denotes the distance between the reflecting site and the first measurement site. Combining equations (11), (12) and (13)…”

Section: Occlusion and Severe Stenosis Identification In Arterial Systemmentioning

confidence: 99%

Occlusion and Severe Stenosis Identification in Arterial System

Abdessalem

Saleh

2016

Int. Ann. Sci.

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A new formula for predicting the position of severe arterial stenosis

Abdessalem

Saleh

2017

Computer Methods in Biomechanics and Biomedical Engineering

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Noninvasive location of an occlusion or a severe stenosis in the arterial system is of a great interest for surgical interventions. Here, we present a new method to determine the location of arterial 99% stenosis in the arterial (sub) system. The method requires a measurement of propagation constant and the instantaneous flow rate or velocity at two sites of an arterial tree. The method was successfully tested using Womersley's oscillatory flow theory and the data obtained by a simulation of Fluid structure interaction (FSI). The effect of noise has been investigated to simulate experimental conditions. The results demonstrate that location of 99% severe stenosis could be accurately obtained. The spatial resolution was approximately a few centimeters and the differences between exact and computed values didn't exceed 13%. However, the identifications of stenotic sites decreased with the distance. Further investigation of the developed method in vivo and in vitro is required.

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Obstruction identification in branching compliant tubes with application to airway passages

Cited by 2 publications

References 19 publications

Occlusion and Severe Stenosis Identification in Arterial System

Occlusion and Severe Stenosis Identification in Arterial System

A new formula for predicting the position of severe arterial stenosis

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