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Relevant bibliographies by topics / Ultrasonic imaging / Dissertations / Theses

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Dissertations / Theses on the topic 'Ultrasonic imaging'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 June 2025

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1

Sikdar, Siddhartha. "Ultrasonic imaging of flow-induced vibrations in tissue /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/6100.

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2

Zemp, Roger James. "Detection theory in ultrasonic imaging /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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3

Goode, Ashley Harford. "High resolution ultrasonic imaging system." Thesis, University of Portsmouth, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329278.

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4

Wylie, Stephen Robert. "An underwater ultrasonic imaging system." Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266220.

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5

Hutt, Timothy David. "Towards next generation ultrasonic imaging." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9759.

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Recently the use of ultrasonic arrays for imaging defects in metal components has become economically attractive in Non-Destructive Testing. Given a certain array, the image quality strongly depends on how the measurements are process into an image. The current state-of-the-art imaging algorithm in actual use is delay-and-sum beamforming, which has a resolution capability that is fundamentally limited by the physical approximation used to describe how waves interact with matter. This thesis explores the practical use of alternative non-linear “super-resolution” imaging algorithms that use more

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6

York, George W. P. "Architecture and algorithms for a fully programmable ultrasound system /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/5931.

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7

Mehra, Sumat. "Frequency modulated pulse for ultrasonic B-scan imaging in attenuating medium /." Online version of thesis, 1991. http://hdl.handle.net/1850/11641.

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8

Baylosis, Benito E. "Acoustic imaging of ultrasonic wave propagation." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA290390.

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9

Weaver, J. M. R. "The ultrasonic imaging of plastic deformation." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375316.

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10

Wu, Chung Hao. "DETERMINATION OF BLADDER VOLUMES BY MICROPROCESSOR BASED ULTRASONIC SYSTEM." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275392.

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11

Levine, Ross M. "Ultrasonic guided wave imaging via sparse reconstruction." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51829.

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Structural health monitoring (SHM) is concerned with the continuous, long-term assessment of structural integrity. One commonly investigated SHM technique uses guided ultrasonic waves, which travel through the structure and interact with damage. Measured signals are then analyzed in software for detection, estimation, and characterization of damage. One common configuration for such a system uses a spatially-distributed array of fixed piezoelectric transducers, which is inexpensive and can cover large areas. Typically, one or more sets of prerecorded baseline signals are measured when the stru

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12

Barkefors, Annea. "3D Synthetic Aperture Technique for Ultrasonic Imaging." Thesis, Uppsala University, Signals and Systems Group, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-121022.

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<p>The group for non-destructive testing at Uppsala University has recently implemented the phase shift migration method, which is a method to focus images acquired unfocused using ultrasound. However, their work has been limited to 2D data, while for many applications the gathered data is 3D. This project has extended the old implementation to 3D data. The new implementation has been done in two different ways, giving one algorithm that works fast but needs much RAM, and one algorithm that takes long time but works on smaller computers, not demanding as much memory. The fast algorithm works f

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13

Vyas, Nina. "Imaging dental ultrasonic cavitation and its effects." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7338/.

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Current methods of dental biofilm removal are predominantly mechanical and are not effective in removing it from irregular surfaces in the mouth. Cavitation occurs around dental ultrasonic scalers and may be a more efficient and less damaging technique. Previous work has failed to quantify the cavitation bubble dynamics around ultrasonic scalers and its effects. The aim was to develop imaging and analysis protocols to analyse the cavitation and to investigate its ability to disrupt biofilms and deliver sub-micron particles into dentine. High speed imaging was used to characterise cavitation. I

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14

Jeffery, Roland. "Diagnostic ultrasound imaging and its role within musculoskeletal medicine a dissertation submitted in partial fulfilment for the degree of Master of Health Science, Auckland University of Technology, March 2003." Full thesis, 2003.

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15

Yeung, Tin-wai, and 楊天慧. "Use of three-dimensional ultrasound in the prediction of homozygous alpha0-thalassemia." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41290616.

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16

Leung, Kwok-yin, та 梁國賢. "Prenatal ultrasound prediction of homozygous α⁰-thalassemia". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47454039.

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Homozygous α0-thalassemia is a serious autosomal recessive disorder with poor fetal outcome and severe maternal complications. Conventionally, prenatal diagnosis is performed by an invasive test. A non-invasive approach using serial ultrasonography can effectively reduce the need for invasive tests in unaffected pregnancies. For two-dimensional ultrasound prediction, a total of 777 at-risk fetuses were studied from 12 to 20 weeks between 1995 and 2006. At 12–15 weeks’ gestation, the highest sensitivity (98.3%) was achieved by the combination of fetal cardiothoracic ratio (CTR) and/o

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17

Pao, Tsang-Long. "Ultrasonic tapered phased arrays for three-dimensional imaging." Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/13541.

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18

Cannon, Cormac. "Motion-compensation for complementary-coded medical ultrasonic imaging." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/3768.

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Ultrasound is a well-established tool for medical imaging. It is non-invasive and relatively inexpensive, but the severe attenuation caused by propagation through tissue limits its effectiveness for deep imaging. In recent years, the ready availability of fast, inexpensive computer hardware has facilitated the adoption of signal coding and compression techniques to counteract the effects of attenuation. Despite widespread investigation of the topic, published opinions vary as to the relative suitability of discrete-phase-modulated and frequency-modulated (or continuous-phase-modulated) signals

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19

Mireault, Alfred Norman. "Mechanical design of an ultrasonic tomographic imaging system." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/105689.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 42-44).<br>The paper presents the design and fabrication of a prototype for limb imaging aimed at tackling several of the issues. The design of the a US probe positioning system is intended to augment a system for motion measurement as well as a framework for the integration of motion and US data. The design of the imaging system below represents early steps towards a full-volume imaging technique for use in comp

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20

Guérendel, Philippe. "Ultrasonic modeling--application to deep-water multiples imaging." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/52920.

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21

Smyth, Katherine Marie. "Piezoelectric micro-machined ultrasonic transducers for medical imaging." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/108938.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 175-184).<br>Next generation medical imaging technology hinges on the development of cost effective and array compatible transducers making piezoelectric micro-machined ultrasonic transducers (pMUTs) an attractive alternative to the current bulk piezoelectric technology. This thesis aims to realize pMUT potential starting with the development of an effective single cell model that is further scaled to optimize

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22

Keshmiri, Esfandabadi Yasamin <1988&gt. "Compressive Sensing and Imaging of Guided Ultrasonic Wavefields." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amsdottorato.unibo.it/9410/1/COMPRESSIVE%20SENSING%20AND%20IMAGING%20OF%20GUIDED%20ULTRASONIC%20WAVEFIELDS.pdf.

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Structural health monitoring (SHM) and Nondestructive Evaluation (NDE) technologies can be used to predict the structural remaining useful life through appropriate diagnosis and prognosis methodologies. The main goal is the detection and characterization of defects that may compromise the integrity and the operability of a structure. The use of Lamb waves, which are ultrasonic guided waves (GW), have shown potential for detecting damage in specimens as a part of SHM or NDT systems. These methods can play a significant role in monitoring and tracking the integrity of structures by estimating th

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23

Li, Bo. "Detection of particles and estimation of size distribution in process fluids /." Online version of thesis, 1992. http://hdl.handle.net/1850/11258.

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24

Eljaaidi, Abdalla Agila. "2D & 3D ultrasound systems in development of medical imaging technology." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2193.

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Thesis (MTech (Electrical Engineering))--Cape Peninsula University of Technology, 2016.<br>Ultrasound is widely used in most medical clinics, especially obstetrical clinics. It is a way of imaging methods that has important diagnostic value. Although useful in many different applications, diagnostic ultrasound is especially useful in antenatal (before delivery) diagnosis. The use of two-dimensional ultrasound (2DUS) in obstetrics has been established. However, there are many disadvantages of 2DUS imaging. Several researchers have published information on the significance of patients being show

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25

廖威賢 and Wai-yin Liu. "Ultrasonic reflection tomography over circular aperture." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1992. http://hub.hku.hk/bib/B31210910.

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26

Sebastian, Dalys. "Development of a field-deployable voice-controlled ultrasound scanner system." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0625104-170951/.

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27

Basoglu, Chris. "A generalized programmable system and efficient algorithms for ultrasound backend processing /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/5978.

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28

Parsons, Adrian. "Seismic exploration techniques applied to ultrasonic imaging within concrete." Thesis, University of Liverpool, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368818.

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29

Coila, Pacompia Andres Leonel. "Regularized spectral log difference technique for ultrasonic attenuation imaging." Master's thesis, Pontificia Universidad Católica del Perú, 2017. http://tesis.pucp.edu.pe/repositorio/handle/123456789/8991.

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The attenuation coefficient slope (ACS) has the potential to be used for tissue characterization and as a diagnostic ultrasound tool, hence complementing B-mode images. The ACS can be valuable for estimation of other ultrasound parameters such as the backscatter coefficient. There is a well-known tradeoff between the precision of the estimated ACS values and the data block size used in spectral-based techniques such as the spectral log difference (SLD). This trade-off limits the practical usefulness of spectral-based attenuation imaging techniques. In this thesis work, the regularized sp

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30

Gunarathne, Gunti P. P. "A new real-time high speed ultrasonic imaging system." Thesis, Loughborough University, 1986. https://dspace.lboro.ac.uk/2134/32232.

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An ultrasonic imaging technique was to be developed for sizing and characterization of defects in thick sections of steel. The problems generally found with the existing techniques in such applications are low speed, inadequate image quality, large size and high cost.

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31

Krishna, Aditya. "Topological Imaging of Tubular Structures using Ultrasonic guided waves." Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0111.

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Les structures tubulaires sont largement utilisées dans diverses industries telles que l’aérospatiale, le pétrole et le gaz, le nucléaire, etc. Le Contrôle Non Destructive (CND) de ces structures joue un rôle crucial au cours de leur cycle de vie. Afin de tester de grandes structures avec une accessibilité limitée, la méthode de CND utilisant des ondes guidées a été développée comme une solution viable. En raison de la nature de ces ondes, elles sont capables de se propager sur de grandes distances sans perdre une grande partie de leur énergie. Cependant, elles sont complexes puisque leur vite

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32

Benane, Mehdi Yanis. "Ultrafast, broadband and multi-pulse transmissions for ultrasonic imaging." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1268/document.

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L'échographie est un outil de diagnostic largement utilisé grâce à des vertus telles que l'acquisition / traitement de données en temps réel, la facilité d'utilisation et la sécurité pour le patient / praticien pendant l'examen. Cependant, comparée à d'autres méthodes d'imagerie telles que la tomographie à rayons X et l'imagerie par résonance magnétique, l'échographie présente l'inconvénient de fournir une qualité d'image relativement basse. Dans cette thèse, nous étudions une méthode capable d'augmenter la qualité d'image, permettant ainsi de meilleurs diagnostics échographiques. Afin d'augme

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33

Majhi, Subhra. "Ultrasonic Wave based Monitoring and Imaging of Civil Infrastructure." Thesis, Curtin University, 2019. http://hdl.handle.net/20.500.11937/78313.

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Australian infrastructure which is predominantly close to the coast are at risk of corrosion. The prevalent visual monitoring of infrastructure warrant alleviation. Ultrasonic waves rely on interaction of waves with the substrate structure. In reinforced concrete infrastructure, they can travel through embedded rebar or surrounding concrete. Processing these wave have revealed their traits. Representative images coalescing these waves are developed. A synergistic wave based monitoring scheme through rebar and concrete is presented to disseminate corrosion.

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34

Liu, Wai-yin. "Ultrasonic reflection tomography over circular aperture /." [Hong Kong] : University of Hong Kong, 1992. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13440019.

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35

Hu, Rui, and 胡瑞. "Applications of non-invasive vascular imaging techniques in cardiovascular risk assessment and management." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B36923242.

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36

Neethling-Du, Toit Merle. "Ultrasound features of the deep infrapatellar Bursa." Thesis, Cape Peninsula University of Technology, 2006. http://hdl.handle.net/20.500.11838/2584.

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Thesis (MTech (Radiography))--Cape Peninsula University of Technology, 2006.<br>The knee is one of the most complicated joints in the body. The deep infrapatellar bursa being only a small water-pocket and forming a small part of the knee. The deep infrapatellar bursa can get inflamed and cause great discomfort, especially to professional sportsmen and -women. If such a inflammation is present, a common treament option are to inject a cortisone solution into the bursa for quick relieve and healing. This study was performed to investigate the specific ultrasound features of a normal de

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37

Lefley, Paul W. "A sensing system for two dimensional acoustical imaging." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328408.

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38

Lai, Di. "Independent component analysis (ICA) applied to ultrasound image processing and tissue characterization /." Online version of thesis, 2009. http://hdl.handle.net/1850/11367.

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39

Munro, W. S. H. "Ultrasonic phased arrays for use in imaging and automatic vehicle guidance." Thesis, University of Nottingham, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334215.

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40

Ashraf, Muhammad. "A 3D ultrasonic camera for subsea applications." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318304.

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41

Tang, Mei-yee. "Medical imaging : applications of functional magnetic resonance imaging and the development of a magnetic resonance compatible ultrasound system /." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36749710.

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42

Tang, Mei-yee, and 鄧美宜. "Medical imaging: applications of functional magnetic resonance imaging and the development of a magnetic resonancecompatible ultrasound system." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B37897688.

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43

Pomeroy, Simon. "Ultrasonic phased arrays for robotics modelling and experimental implementation." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254469.

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44

Satir, Sarp. "Modeling and optimization of capacitive micromachined ultrasonic transducers." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/54303.

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The objective of this research is to develop large signal modeling and optimization methods for Capacitive Micromachined Ultrasonic Transducers (CMUTs), especially when they are used in an array configuration. General modeling and optimization methods that cover a large domain of CMUT designs are crucial, as many membrane and array geometry combinations are possible using existing microfabrication technologies. Currently, large signal modeling methods for CMUTs are not well established and nonlinear imaging techniques utilizing linear piezoelectric transducers are not applicable to CMUTs becau

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45

Zhu, Hui. "Scatterer number density estimation for tissue characterization in ultrasound imaging /." Online version of thesis, 1990. http://hdl.handle.net/1850/10882.

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46

SAUTTO, MARCO. "ANALOG FRONT-END CIRCUITS FOR HIGHLY INTEGRATED ULTRASOUND IMAGING SYSTEMS." Doctoral thesis, Università degli studi di Pavia, 2017. http://hdl.handle.net/11571/1203280.

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Ultrasound imaging is a well-established medical diagnostic technique. Compared with other imaging modalities, such as for example X-ray, ultrasound is harmless to the patient and less expensive while providing real-time imaging capability with adequate resolution for most applications. Piezoelectric materials have dominated the ultrasound transducers technology for a long time but, thanks to the intense research activity in recent years, capacitive micromachined ultrasonic transducers (CMUT) are emerging as a competitive alternative for next generation imaging systems. The objective of the th

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47

Hall, James Stroman. "Adaptive dispersion compensation and ultrasonic imaging for structural health monitoring." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41159.

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Ultrasonic guided wave imaging methods offer a cost-effective mechanism to perform in situ structural health monitoring (SHM) of large plate-like structures, such as commercial aircraft skins, ship hulls, storage tanks, and civil structures. However, current limits in imaging quality, environmental sensitivities, and implementation costs, among other things, are preventing widespread commercial adoption. The research presented here significantly advances state of the art guided wave imaging techniques using inexpensive, spatially distributed arrays of piezoelectric transducers. Novel adaptiv

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48

Qian, Yichen. "Design of high frequency ultrasonic array transducers for medical imaging." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/336225/.

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Ultrasonic transducers have been widely used in the medical applications. High frequency array transducers have recently attracted many research interests, since it provides not only the electronic beamforming but also the very fine image resolution. The transducers are usually either annular or linear arrays. This study concentrates on the design of both types of array in high frequency applications. The annular array is firstly investigated, and an optimized design of array geometry is developed including the kerfs influence which is usually neglected in the design of high frequency arrays.

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49

Choi, Hongsoo. "Fabrication, characterization and modeling of K₃₁ piezoelectric micromachined ultrasonic transducers (pMUTs)." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Dissertations/Fall2007/h_choi_091007.pdf.

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50

Huck, Todd E. "A study of in vitro phase aberration measurements in ultrasonic imaging /." Online version of thesis, 1994. http://hdl.handle.net/1850/12135.

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