Publication:
Guidance and monitoring of liquid-filled tubes using time domain acoustic reflectometry

dc.contributor.advisor Juan García, Eduardo J.
dc.contributor.author Ordóñez Estévez, Sandra L.
dc.contributor.college College of Engineering en_US
dc.contributor.committee Velez Reyes, Miguel
dc.contributor.committee Hunt, Shawn
dc.contributor.department Department of Electrical and Computer Engineering en_US
dc.contributor.representative Sundaram, Paul A.
dc.date.accessioned 2019-05-15T17:59:39Z
dc.date.available 2019-05-15T17:59:39Z
dc.date.issued 2005
dc.description.abstract Time domain acoustic reflectometry is proposed in this research as a method to detect atherosclerosis, estimating the location and extension of arterial obstructions by determining what is ahead of the catheter tip (“forward looking”), as opposed to the Intravascular Ultrasound (IVUS) that provides only 2D cross-sectional area images of the artery (“Side Looking”) but does not provide any depth information. Since the proposed technique has not yet been investigated for liquid-filled tubes, in this research, the sound wave propagation in rigid liquid-filled tubes was studied by comparing an acoustical transmission line model predictions with measurements made in water-filled copper pipes. Model predictions underestimated energy losses and speed of sound values with errors of 40% and 120 m/s, respectively. en_US
dc.description.abstract En esta investigación se propone el uso de la reflectometría acústica en el dominio del tiempo como método de detección de arterosclerosis, para estimar la posición y extensión de las obstrucciones arteriales observando delante de la punta del catéter, al contrario del Ultrasonido Intravascular (IVUS), el cual solo proporciona imágenes en 2D del área seccional de la arteria sin proporcionar ninguna información sobre su profundidad. Dado que la técnica propuesta no ha sido investigada en tubos llenos de líquido, la propagación del sonido en tubos rígidos llenos de líquido fue estudiada aquí comparando las predicciones de un modelo de línea de transmisión acústico con mediciones en tubos de cobre llenos de agua. Las predicciones del modelo subestiman los valores de pérdida de energía y velocidad del sonido con un error del 40% y 120 m/s, respectivamente. en_US
dc.description.graduationYear 2005 en_US
dc.description.sponsorship Supported by the “National Institute of Health” NIH, program MBRS-SCORE. en_US
dc.identifier.uri https://hdl.handle.net/20.500.11801/2409
dc.language.iso en en_US
dc.rights.holder (c) 2005 Sandra Liliana Ordóñez-Estévez en_US
dc.rights.license All rights reserved en_US
dc.title Guidance and monitoring of liquid-filled tubes using time domain acoustic reflectometry en_US
dc.type Thesis en_US
dspace.entity.type Publication
thesis.degree.discipline Electrical Engineering en_US
thesis.degree.level M.S. en_US
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