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Dissertations / Theses on the topic 'Ultrasound scan'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Sayasneh, Ahmad. "Ultrasound scan characterisation of ovarian masses." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/34343.

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Background: Different ultrasound based models, rules and descriptors are used to characterise ovarian masses. LR2 is a logistic regression model with six variables to assess the preoperative risk of ovarian malignancy. Simple rules (SR) are ten features of an adnexal mass that may be identified using ultrasonography. Simple descriptors (SD) are five ultrasound characteristics and one based on age and serum CA 125 that enable an intuitive classification of adnexal masses. Objectives: The main aim was to assess the performance of the conventional (Risk of Malignancy Index RMI) and the IOTA (Inte

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2

Vadalma, Anthony. "Smartphone ultrasound imaging." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/204111/1/Anthony_Vadalma_Thesis.pdf.

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This research project titled 'Smartphone Ultrasound Imaging' aimed to develop an affordable, portable and single handed ultrasound-imaging device to be used in hospitals, developing world nations as well as rural and remote Australia. This study examined the feasibility of combining a conventional smartphone with an ultrasound probe into one single device. All necessary ultrasound signal processing components were built and smartphone applications were developed to successfully transmit data either via Bluetooth or Wi-Fi from the ultrasound to the smartphone.

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3

Liu, Li. "An Affordable Portable Obstetric Ultrasound Simulator for Synchronous and Asynchronous Scan Training." Digital WPI, 2016. https://digitalcommons.wpi.edu/etd-dissertations/444.

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The increasing use of Point of Care (POC) ultrasound presents a challenge in providing efficient training to new POC ultrasound users. In response to this need, we have developed an affordable, compact, laptop-based obstetric ultrasound training simulator. It offers freehand ultrasound scan on an abdomen-sized scan surface with a 5 degrees of freedom sham transducer and utilizes 3D ultrasound image volumes as training material. On the simulator user interface is rendered a virtual torso, whose body surface models the abdomen of a particular pregnant scan subject. A virtual transducer scans the

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4

Adeniyi, Olanrewaju Ari. "FUSION OF ULTRASONIC C-SCAN DATA WITH FINITE ELEMENT ANALYSIS." OpenSIUC, 2012. https://opensiuc.lib.siu.edu/theses/909.

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AN ABSTRACT OF THE THESIS OF Olanrewaju Ari Adeniyi for the Master of Science degree in Mechanical Engineering and Energy Processes presented June 2012, at Southern Illinois University Carbondale Title: FUSION OF ULTRASONIC C-SCAN DATA WITH FINITE ELEMENT ANALYSIS Major Professor: Dr. Tsuchin Philip Chu Ultrasonic testing is a highly valued method in the field of Non-destructive testing (NDT). It is an engineering tool that allows for non-invasive testing and evaluation. It is used widely in the aerospace industry to determine the integrity of complex materials without the use of destructive

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5

Perrey, Christian. "Signal processing concepts for the assessment of coronary plaques with intravascular ultrasound." Berlin Logos-Verl, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2800326&prov=M&dok_var=1&dok_ext=htm.

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6

Postma, Ignatius. "The HI-MAP scan : the use of emergency ultrasound to evaluate haemodynamically unstable patients." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/2870.

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7

Furlan, John Michael. "Particle Concentration Measurements in a Centrifugal Slurry Pump Using an A-Scan Ultrasound Technique." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1301325325.

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8

Lynn, F. A. "The value of a third trimester ultrasound scan in low-risk pregnancy; a discrete choice approach." Thesis, Queen's University Belfast, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.517102.

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9

Sesay, N'Falie Ibrahim. "The effectiveness of a late gestation ultrasound scan in predicting late onset intra-uterine growth restriction." Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/9473.

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Introduction: Fetal growth restriction (FGR) is associated with stillbirth, intrapartum death and major perinatal morbidity. The aim of this study was to determine which third trimester ultrasound parameters best predict FGR defined by percentage body fat (%BF) at delivery. Methods: The antenatal ultrasound findings of a cohort of neonates that had had %BF assessed at birth were reviewed, limiting study to those with an ultrasound within two weeks of delivery. The biometry, amniotic fluid indices (AFI) and Doppler indices were collated with the postnatal findings. Growth restriction was defi

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10

Bevan, Peter D. "Feasibility of B-scan ultrasound attenuation mapping to monitor tissue coagulation due to high-temperature thermal therapy." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ58833.pdf.

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11

Hillman, Sarah Christine. "The use of prenatal chromosomal microarrays when performed for a fetus with structural abnormalities on ultrasound scan." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/4762/.

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Fetal chromosomes are examined conventionally by G-band karyotyping. More recently Prenatal Chromosomal Microarray (CMA) has been used to look for fetal chromosomal abnormalities. Advantages of CMA include its higher detection rate. Disadvantages include its detection of Variants of Unknown Significance (VOUS). I recruited a prospective cohort of 243 women with structural abnormalities on fetal ultrasound scan. A 1Mb targeted BAC array was performed in addition to G-band karyotyping. In 62 cases from this cohort an additional higher resolution 60K oligonucleotide array was used. A health econo

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12

Lin, Win-Li. "Scan parameter optimization and a temperature controller for scanned focussed ultrasound hyperthermia: A theoretical and experimental study." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/185181.

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Maintenance of the treatment temperatures at their target levels in the face of disturbances, a uniform temperature distribution within the treatment region, an acceptable temperature rise outside that volume, a fast temperature rise, and stability are desirable characteristics of an optimal hyperthermia treatment control system. Since scanned, focussed ultrasound systems (SFUS) have a great deal of flexibility it is necessary to use such a feedback system in shaping the power field during hyperthermia treatments. For best use of such a system many complicated, interacting decisions must be ma

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13

Navarrete, Hurtado Hugo Ariel. "Electromagnetic models for ultrasound image processing." Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/398235.

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Speckle noise appears when coherent illumination is employed, as for example Laser, Synthetic Aperture Radar (SAR), Sonar, Magnetic Resonance, X-ray and Ultrasound imagery. Backscattered echoes from the randomly distributed scatterers in the microscopic structure of the medium are the origin of speckle phenomenon, which characterizes coherent imaging with a granular appearance. It can be shown that speckle noise is of multiplicative nature, strongly correlated and more importantly, with non-Gaussian statistics. These characteristics differ greatly from the traditional assumption of white add

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14

Guipieri, Séraphin. "Caractérisation ultrasonore de la qualité osseuse : application à la chirurgie orthopédique." Thesis, Paris Est, 2015. http://www.theses.fr/2015PESC0026/document.

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La qualité osseuse est un paramètre important à prendre en compte lors des différents types de chirurgie mis en œuvre pour les interventions sur le rachis. Cependant, ce paramètre reste difficile à estimer in vivo du fait notamment de la difficulté à accéder à ce site anatomique. Ce travail porte sur le développement d'une technique ultrasonore permettant d'estimer la qualité osseuse en utilisant la réponse échographique d'une tige métallique insérée dans l'os et utilisée dans le cadre de la chirurgie du rachis. Des travaux expérimentaux montrent la faisabilité de notre approche in vitro. Une

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15

Fabík, Vojtěch. "Fantomy pro oftalmologický ultrazvukový systém." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220047.

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In our work we have studied the ultrasonic imaging systems and their use in ophthalmology, especially with the device Nidek 4000. We described ophthalmological examination methods. In addition, we are using the simulation program Field II. It simulated eye phantom and created his B-scan and biometry, where we compared the effects of different central frequency ultrasonic probes and different speeds of sound in the resulting values. We also created phantoms using agarose gel and materials of different properties. On phantoms, we studied the effect of the velocity of ultrasound in measurement re

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16

Kamal, Dhafer M. "The value of duplex ultrasound versus contrast enhanced CT scan in the follow-up of endoluminally repaired abdominal aortic aneurysm : a blinded study." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=19428.

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I-To compare aneurysm diameter measurements, and the detection of endoleaks in patients post endoluminal aortic aneurysm repair by colour duplex ultrasonography as compared to contrast enhanced CT scan as the gold standard. 2-To evaluate whether contrast enhanced ultrasound (levovist) improves the accuracy of colour duplex ultrasound for the detection of endoleaks as compared to CT.

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17

Müller, Franziska. "Hochauflösende Ultraschallverfahren und Doppler-Sonographie zur Mammadiagnostik bei der Hündin." Doctoral thesis, Universitätsbibliothek Leipzig, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-38087.

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An 53 Hündinnen aus dem Patientengut der Klinik für Kleintiere der Universität Leipzig, die mit Umfangsvermehrungen der Mamma vorgestellt und anschließend in der Klinik für Kleintiere operiert wurden, wurde präoperativ eine sonographische Untersuchung der Mamma durchgeführt. Darüber hinaus wurden die Mammarkomplexe von acht tragenden und einer laktierenden Hündin mit dieser Technik untersucht. Ziel war es, Kriterien zur Einschätzung der Dignität der Tumoren mit Hilfe dieser nichtinvasiven Methode zu erarbeiten. Es sollten die Fragen geklärt werden, ob mit Hilfe der hochauflösenden Sonographie

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18

Hellmark, Lindgren Birgitta. "Pregnoscape : Den gravida kroppen som arena för motstridiga perspektiv på risk, kön och medicinsk teknik." Doctoral thesis, Uppsala universitet, Institutionen för kulturantropologi och etnologi, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6749.

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Pregnancy and birth are not only physiological processes but also socially and culturally organized events. Pregnancy is an individual experience as well as the focus of collective concerns and values. In this dissertation the pregnant body is understood as an arena of social truths and contesting perspectives: a public stage where different perspectives on medical technology, risk and gender are acted out. Swedish maternity care dominates the arena, and women have to adjust to the authority of medical knowledge. This, however, does not mean that women comply without questions. As the study sh

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19

Naji, Osama. "Ultrasound studies of caesarean section scar in pregnancy." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/19445.

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Incomplete healing of CS scars has become a recognised sequel to this operation, and is associated with complications in later pregnancies. These can include caesarean scar pregnancy (CSP), a morbidly adherent placenta, scar dehiscence or rupture. To date there is uncertainty relating to the recognition of poor scar healing and the factors that lead to it. In recent years, there has been an increase in studies using ultrasound imaging to describe scars as deficient, or incompletely healed. However, these studies were carried out in the non-pregnant state, with a paucity of data to associate th

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20

Benjamin, Alex(Alex Robert). "3D organ property mapping using freehand ultrasound scans." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/128989.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2020<br>Cataloged from student-submitted PDF of thesis.<br>Includes bibliographical references (pages 141-151).<br>3D organ property mapping has gained a considerable amount of interest in the recent years because of its diagnostic and clinical significance. Existing methods for 3D property mapping include computed tomography (CT), magnetic resonance imaging (MRI), and 3D ultrasound (3DUS). These methods, while capable of producing 3D maps, suffer from one or more of the following drawbacks: high cost,

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21

Saldanha, Fatima Aparecida Targino. "Acompanhamento pré e pós-natal dos casos com translucência nucal fetal aumentada." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/5/5139/tde-09102014-111046/.

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Objetivo: analisar o resultado das gestações e pós-natal dos fetos com translucência nucal (TN) aumentada. Método: Duzentos e setenta e cinco fetos com TN aumentada foram avaliados no setor de Medicina Fetal da Clínica Obstétrica do HC-FMUSP, com análise do cariótipo, ultra-sonografia seriada, ecocardiografias fetal e pós-natal e avaliação clinica genética pós-natal. Resultados: 14,2% apresentaram cariótipos alterados e 85,8% normais. A ultra-sonografia morfológica esteve alterada em 73,1% dos casos com cariótipo anormal e em 24,7% dos normais, destes, um terço apresentou malformações estrutur

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22

Schöne, Martin. "Possibilities of Articular Cartilage Quantification Based on High-Frequency Ultrasound Scans and Ultrasound Palpation." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/21781.

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In der Diagnostik und Reparatur von hyalinem Gelenkknorpel sind neue Methoden zur Quantifizierung von Struktur und mechanischer Belastbarkeit gefragt, um die Behandlung von Knorpelschäden an Millionen von Patienten weltweit zu verbessern. Mittels hochfrequentem, fokussierten Ultraschall werden Oberflächenparameter für Reflektivität und Rauheit an Gelenkknorpel bestimmt. Es wird gezeigt wie die Oberflächenneigung kontrolliert werden kann. Die Ergebnisse vermitteln ein besseres Verständnis über die Zusammensetzung der Ultraschallsignale aus reflektierten und gestreuten Komponenten. 3D Ultrasch

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23

Schöne, Martin [Verfasser]. "Possibilities of Articular Cartilage Quantification Based on High-Frequency Ultrasound Scans and Ultrasound Palpation / Martin Schöne." Berlin : Humboldt-Universität zu Berlin, 2020. http://d-nb.info/1216877203/34.

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24

Smith, Bryan Ronain. "Nanoparticulate platforms for molecular imaging of atherosclerosis and breast cancer." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1150309580.

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25

Tegos, Thomas Ioannis. "The identification of the unstable carotid plaque on ultrasound." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367735.

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26

Zardan, Jean-Philippe. "Etude d’un contrôle ultrasonore pour la détection et l’identification de l’ondulation de plis dans les CFRP aéronautiques." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4357.

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L'ondulation pli est un défaut majeur qui peut apparaître dans certains matériaux composites tels que le CFRP. Des mesures de vitesse et atténuation ultrasonore permettent la détection, mais pas l'identification, de l'ondulation pli. Dans la présente étude, il est démontré que pour identifier cette ondulation pli, il est important de prendre en compte la déviation du faisceau ultrasonore. Deux méthodes différentes, A²Scan et C²Scan, permettent de détecter et mesurer cette déviation. D'une part, de l'écart produit un comportement asymétrique dans les réponses obtenues à des angles d'incidence o

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27

Zhang, Hai. "Comparative study of infrared thermography, ultrasonic C-scan, X-ray computed tomography and terahertz imaging on composite materials." Doctoral thesis, Université Laval, 2017. http://hdl.handle.net/20.500.11794/36573.

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L’évaluation non destructive (NDT) des matériaux composites est compliquée en raison de la vaste gamme de défauts rencontrés (y compris délaminage, microfissuration, fracture de la fibre, retrait des fibres, fissuration matricielle, inclusions, vides et dommages aux chocs). La capacité de caractériser quantitativement le type, la géométrie et l’orientation des défauts est essentielle. La thermographie infrarouge (IRT), en tant que technique de diagnostic d’image, peut satisfaire le besoin industriel croissant de NDT&E. Dans la thèse, la thermographie par excitation optique et mécanique a été u

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28

Binte, Mokhtar Hanan. "Contribution to the study of impact damage on composite laminates : the effect of hygrothermal ageing and preloading." Thesis, Dijon, 2012. http://www.theses.fr/2012DIJOS045.

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Ce travail a pour but d'étudier la tolérance à l'impact de 3 stratifiés carbone/époxy soumis simultanément à différents types de chargements hygrothermiques et mécaniques. Ces stratifications présentant des caractéristiques mécaniques globales particulières d'isotropie, il s'agit ici de déterminer l'influence de la séquence d'empilement sur le développement de l'endommagement lors d'un impact. Dans un premier temps, la cinétique de vieillissement hygrothermique des trois stratifications est étudiée et analysée. Ensuite, leur tolérance à un unique impact ainsi qu'à des impacts répétés est évalu

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29

Aboissière, Jacky. "Propagation de dommages d'impact dans un matériau composite stratifié à fibres de carbone et résine époxyde." Toulouse 3, 2003. http://www.theses.fr/2003TOU30027.

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30

Loïc, Martinez. "NOUVELLES MÉTHODES D'IDENTIFICATION D'ONDES DE SURFACE - ÉTUDE DE L'ONDE A SUR UNE CIBLE COURBE." Phd thesis, Université du Havre, 1998. http://tel.archives-ouvertes.fr/tel-00583081.

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Le problème de la propagation d'ondes sur une plaque plane élastique en contact avec deux liquides différents est traité. Une étude numérique détaillée montre les propriétés de l'onde A et l'existence d'une nouvelle onde (onde A*) quand deux fluides différents sont en contact avec la lame. Une étude expérimentale des ondes A et A* est ensuite menée en utilisant des techniques expérimentales particulières à la caractérisation de l'onde A: génération d'une onde non atténuée par une impulsion et caractérisation par analyse temps-fréquence. La propagation d'une onde dans un milieu monodimensionnel

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31

Porras, Pérez Antonio Reyes. "Multi-cue image integration for cardiac tissue characterization." Doctoral thesis, Universitat Pompeu Fabra, 2015. http://hdl.handle.net/10803/296796.

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Una caracterización precisa y completa del tejido cardíaco es esencial para el diagnóstico y tratamiento de problemas cardíacos. Para caracterizar la función cardíaca desde diferentes perspectivas, en la práctica clínica, se adquieren grandes cantidades de datos de distinta naturaleza sobre un mismo paciente, proporcionando información útil para la evaluación del corazón. Aunque los distintos datos obtenidos de cada paciente se suelen analizar por separado para evaluar la función cardíaca desde diferentes perspectivas, la combinación efectiva de esta información heterogénea podría ser útil par

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32

Hu, Pei-Chi, and 胡旆綺. "Side-Scan Technology Used in High-Frequency Ultrasound Needle Transducer." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/r6t2rt.

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碩士<br>國立陽明大學<br>生物醫學工程學系<br>103<br>Epidural Anesthesia (EA) is one of the most common anesthesia methods. The anesthesiologist will insert the epidural needle, place catheter and inject anesthetic into the narrow epidural space. Too deep needle insertion would cause Dural Puncture which result in Cerebral Spinal Fluid (CSF) leakage with headache and vomit complications etc. We develop a 30 MHz high-frequency ultrasound needle transducer technology, place the needle transducer into the epidural needle and is able to provide guiding and locating in EA insertion. In this research, the 40% increas

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Lai, Chao-Wei, and 賴昭維. "Quantifying the Visual Features of Ultrasound Image Texture with Back-Scan Conversion." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/80093487983155981037.

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博士<br>國立臺灣大學<br>電機工程學研究所<br>96<br>The visual features are important in clinically diagnosing liver diseases with ultrasound image texture. However, there is no consistent definition of these features. In this study, several textural features proposed by Amadasun are adopted for quantifying the visual features of ultrasound image texture. To cope with the distortion caused by the digital scan conversion (DSC) in ultrasound imaging, a back-scan conversion (BSC) algorithm is applied to homogenize the sampling format and sampling rate of ultrasound image texture before measuring these features. Th

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34

Lai, Chao-Wei. "Quantifying the Visual Features of Ultrasound Image Texture with Back-Scan Conversion." 2008. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2907200821261200.

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Fuller, Michael I. "Integrated circuit design for low-cost, pocket-sized, C-scan medical ultrasound imaging /." 2007. http://wwwlib.umi.com/dissertations/fullcit/3187858.

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Yen, YU-JEN, and 顏郁人. "Correlation Study of Image Features between Ultrasound and PET on Breast Cancer Scan." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/12084505898935265017.

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碩士<br>義守大學<br>資訊工程學系碩士在職專班<br>101<br>In the past decade, the incidence and death rate of female with breast cancer is increasing year after year, and the mean age of patience is becoming younger. According to the study of American Joint Committee on Cancer (AJCC), early detection and treatment of breast cancer can greatly improve the survival rate of patients. The aim of this study was to retrieve the image features and to do the correlation analysis between Positron Emission Tomography (PET) and Breast Ultrasound ianges of breast cancer patients. This study collected 14 cases (mean age: 55) w

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Nalaila, Sungael. "Whole genome scan of QTL for ultrasound and carcass merit traits in beef cattle." Master's thesis, 2010. http://hdl.handle.net/10048/1595.

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A whole genome scan was conducted to identify and fine map QTL regions for ultrasound and carcass merit traits in beef cattle. A total of 465 steers and bulls, genotyped for 4592 SNPs, were analysed for 16 ultrasound and carcass merit traits using interval mapping, single marker regression and Bayesian shrinkage approaches. Thirty QTL and 22 SNPs associated with traits were identified by interval mapping and single marker regression respectively. In Bayesian shrinkage estimation, 218 QTL were identified, wherein 11 of the 30 QTL identified by interval mapping were confirmed. The proportions of

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Stegman, Kelly J. "Development of 2D Ultrasound Tracking Software and Hardware to Monitor Multiple Flexor Tendon Displacement for Applications Toward Hand Prostheses." Thesis, 2013. http://hdl.handle.net/1828/5129.

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This thesis work provides a new way to detect and track the displacement of flexor tendons within the human arm, using a non-invasive, ultrasound-based, speckle tracking technique. By tracking the tendons in the arm, it provides a way to monitor a person’s intention to move their hands and fingers. This has application to hand prosthetic control, as well as tendon injury assessment, which has significant contributions to the medical and rehabilitation community. The system works by capturing and processing a sequence of B-scan ultrasound images, to detect and track the flexor tendon motion (ex

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Ferreira, Marco Andre Florindo. "Sistema de Visualização para Oftalmologia usando Dispositivos Android." Master's thesis, 2015. http://hdl.handle.net/10316/40409.

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40

Paulino, Diogo Gilberto Coelho. "Protocolos de fluidoterapia e sua avaliação através da Veterinary Point-Of-Care Ultrasound." Master's thesis, 2020. http://hdl.handle.net/10437/11867.

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Orientação: Rute Teixeira; co-orientação: Ângela Martins<br>A VPOCUS (Veterinary Point-of-Care Ultrasound) representa um conjunto de técnicas especificamente desenvolvidas para detetar não só lesões a nível abdominal, como também a nível torácico. É um exame repetível, objetivo e rápido, sendo desta forma de extrema importância na avaliação diária em doentes traumáticos e instáveis, até na avaliação geral de todos os doentes. Pretendeu-se com o presente estudo verificar a diferenciação da presença de linhas B, como sinal clínico em cães, independentemente dos sinais de SRIS (síndrome de respo

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Müller, Franziska. "Hochauflösende Ultraschallverfahren und Doppler-Sonographie zur Mammadiagnostik bei der Hündin: High-resolution and Doppler methods in sonography of the mammary gland of the bitch." Doctoral thesis, 2009. https://ul.qucosa.de/id/qucosa%3A11014.

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An 53 Hündinnen aus dem Patientengut der Klinik für Kleintiere der Universität Leipzig, die mit Umfangsvermehrungen der Mamma vorgestellt und anschließend in der Klinik für Kleintiere operiert wurden, wurde präoperativ eine sonographische Untersuchung der Mamma durchgeführt. Darüber hinaus wurden die Mammarkomplexe von acht tragenden und einer laktierenden Hündin mit dieser Technik untersucht. Ziel war es, Kriterien zur Einschätzung der Dignität der Tumoren mit Hilfe dieser nichtinvasiven Methode zu erarbeiten. Es sollten die Fragen geklärt werden, ob mit Hilfe der hochauflösenden Sonographie

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42

Silva, Ana Margarida Bernardo da. "Caracterização da aparência ecográfica de lesões esplénicas em relação ao seu diagnóstico histopatológico em cães." Master's thesis, 2022. http://hdl.handle.net/10437/12788.

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Orientação: Nazaré Cunha ; coorientação: Inês Oliveira<br>As patologias esplénicas são doenças comummente diagnosticadas em canídeos e apresentam manifestações clínicas inespecíficas, sendo necessário recorrer a exames complementares de diagnóstico, como a ecografia abdominal e a citologia. O objetivo do presente trabalho foi caracterizar uma população de canídeos esplenectomizados e a aparência ecográfica das suas lesões esplénicas de modo a determinar a capacidade de diferenciar lesões benignas de malignas. Para tal, avaliou-se a imagem ecográfica de 19 canídeos em comparação com o seu diagn

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Chen, Hung-Ju, and 陳泓儒. "Implementation of a burn scar assessment system by ultrasound techniques." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/54039867414465029489.

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碩士<br>國立成功大學<br>醫學工程研究所碩博士班<br>93<br>Tissue injury and the ensuing healing process cause scar formation. In addition to physical disability, the subsequent disfigurements from burns often bring negative psychological impacts on the survivors. Scar hypertrophy and contracture limited joints motion and body functions. With the current technologies available, therapies no longer focus sorely on the process of wound healing, but also emphasize on the cosmetic and functional outcomes. Therefore, proper evaluation and assessment of the steps to nil scar status is expected. However, the frequently em

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Azinhais, Marta Coutinho Candeias Viegas. "Laserterapia de alta intensidade no tratamento de tendões e ligamentos da extremidade distal do membro em equinos: aplicação a quatro casos clínicos." Master's thesis, 2022. http://hdl.handle.net/10437/12821.

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Orientação: Joana Simões ; coorientação: Mafalda Vaz Pinto<br>Enquanto atleta, o cavalo está altamente predisposto a lesões de estruturas ligamentosas e tendinosas localizadas na porção distal dos membros. O aumento do conhecimento científico sobre lesões locomotoras apela, cada vez mais, a tratamentos que preservem e otimizem o futuro da carreira desportiva do cavalo. É nesta perspetiva que se verifica uma crescente preferência por soluções pouco invasivas – onde se integra a laserterapia de alta intensidade. O presente trabalho teve por objetivo desenvolver o tema da laserterapia no tratamen

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Taylor, Jason Richard Benjamin. "Wavelet-based blind deconvolution and denoising of ultrasound scans for non-destructive test applications." 2012. http://hdl.handle.net/1993/14161.

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A novel technique for blind deconvolution of ultrasound is introduced. Existing deconvolution techniques for ultrasound such as cepstrum-based methods and the work of Adam and Michailovich – based on Discrete Wavelet Transform (DWT) shrinkage of the log-spectrum – exploit the smoothness of the pulse log-spectrum relative to the reflectivity function to estimate the pulse. To reduce the effects of non-stationarity in the ultrasound signal on both the pulse estimation and deconvolution, the log-spectrum is time-localized and represented as the Continuous Wavelet Transform (CWT) log-scalogram in

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Dosedla, Erik. "Ultrazvuková charakteristika dutiny břišní v průběhu 6 tydnů po císařském řezu." Doctoral thesis, 2017. http://www.nusl.cz/ntk/nusl-372356.

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Caesarean section is one of the most frequently performed surgery in medicine. The Cesarean section scar in the uterus can lead to a number of pathological conditions which affect the women reproductive health. In industrialized countries, this issue relates to at least 30% of women, which means that it is a major medical problem. Ultrasound examination of the uterus after Cesarean section includes some specific features, resulting from the rapidly changing dimensions of the uterus, as well as from patient compliance in early puerperium. When dealing with postpartum complications, it is necess

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Bacelar, Joana Filipa Correia Soares. "Estudo da relação entre a doença renal e as alterações ecográficas observadas no rim do gato." Master's thesis, 2016. http://hdl.handle.net/10437/7523.

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Orientação : João Requicha ; co-orientação : Ana Santana<br>A doença renal é uma doença diagnosticada frequentemente em gatos seniores e geriátricos, apesar de afetar gatos de todas as idades. O exame ecográfico do rim, apesar de não fornecer informações sobre o funcionamento renal, é uma ferramenta vital no diagnóstico de alterações morfológicas no sistema urinário. O presente estudo, observacional transversal, teve como objetivo avaliar as alterações ecográficas mais frequentes no rim do gato, assim como identificar relações entre a idade dos indivíduos e a presença de doença renal. Este

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Santos, António Manuel Barroso Rodrigues dos. "Utilização da ecografia no aumento de rentabilidade em explorações de ovinos." Master's thesis, 2013. http://hdl.handle.net/10437/4802.

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Orientação : João António Martins Cannas da Silva ; co-orientação : Maria do Carmo Feliciano<br>Neste estudo avaliou-se a eficácia reprodutiva da aplicação de dois sistemas de maneio, na época de cobrição, em ovinos. Avaliou-se também a variação sazonal de parâmetros reprodutivos. Na exploração A houve primeiro a pré-exposição a carneiros férteis (45 dias), onde se efectuaram cobrições naturais. O diagnóstico de gestação foi feito aos 90 dias, com nova introdução de machos. Posteriormente foram retirados os carneiros, realizando-se novo diagnóstico aos 180 dias. Efetuaram-se ainda dois grupos

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Leonardo, Joana Figueiredo. "Estudo ecográfico em glândulas adrenais aumentadas." Master's thesis, 2013. http://hdl.handle.net/10437/4841.

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Orientação : Margarida Alves ; co-orientação : Pedro Morais de Almeida ; responsabilidade externa : Luís Cruz<br>A ecografia abdominal tem inúmeras vantagens na observação das glândulas adrenais, especialmente em animais geriátricos. Em muitos animais, as adrenais são ecograficamente detetadas apenas quando aumentadas. Alguns tipos de aumento têm significado patológico, podendo estar ou não associado a distúrbios endócrinos, o que reforça a importância da sua observação aquando do exame ecográfico. O presente trabalho teve como objetivos, descrever os achados ecográficos de glândulas adren

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Serralheiro, Maria Margarida Marques. "Análise retrospetiva da utilização de ecografia convencional e ultrassonografia biomicroscópica em oftalmologia de canídeos e felídeos." Master's thesis, 2018. http://hdl.handle.net/10437/9409.

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Orientação: Daniel Murta ; orientação externa: Ana Paula Resende<br>A oftalmologia humana tem sofrido constantes avanços tecnológicos com a evolução da medicina ao longo dos anos, começando a haver cada vez mais formas de diagnóstico capazes de aprofundar alterações oculares, no entanto em medicina veterinária este ainda é um ramo pouco explorado, mas que se encontra em crescimento. A ultrassonografia ocular entende-se pela utilização da ondas de som, em frequências superiores às detetadas pelo ouvido humano, emitidas por um transdutor posicionado sobre o globo ocular que permite a avali

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