Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"speckle tracking"”.
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Untersuchung der myokardialen Deformation des singulären linken Ventrikels mittels 2-dimensionaler Feature Tracking Magnetresonanztomographie
… in der Fontan-Zirkulation mittels 2D-MRT Feature Tracking und 2D-Speckle Tracking Echokardiographie untersucht und mit gesunden Kontrollen verglichen. Die meisten Patienten waren der NYHA-Klasse I zuzordnen und hatten eine normale Ejektionsfraktion (Median 55,6%), die jedoch gegenüber Kontrollen …
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Marcadores de predição de lesão miocárdica em mulheres com câncer submetidas à quimioterapia com doxorrubicina
… QT; e exames de ecocardiograma com a técnica do speckle tracking antes de iniciar a QT, após a terceira, quarta ou sexta QT e após um ano de início da QT. Resultados: das 40 pacientes, 37 tinham câncer de mama, 2 linfomas e1 sarcoma. A média de idade foi 55,9±10,8 anos. Os fatores de risco para …
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The pathophysiology of heart failure with preserved ejection fraction
… and diastolic dyssynchrony as measured by speckle tracking imaging (STI). And that the LV anterior wall appears to be the most delayed segment. We also demonstrated that HfpEF patients exhibited chronotropic incompetence during peak exercise testing and abnormal HR recovery following …
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Cardiovascular consequences of anabolic steroid use
… well as an in-depth cardiac assessment utilising speckle tracking echocardiography which can assess regional and global cardiac deformation in multiple planes. In AS users we observed an increase in resting heart rate and low- density lipoprotein concomitant to a decrease in high-density …
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Detecting subclinical anthracycline therapy related cardiac dysfunction in low income country (SATRACD study)
… cell injury that can be detected using speckle tracking echocardiography (STE), together with Troponin-I. Limited availability of STE in Uganda posts challenges in detecting subclinical ATRCD. Anthracycline can also affect cancer survivors' cardiovascular health through altering …
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Noninvasive Multi-Modality Studies of Cardiac Electrophysiology, Mechanics, and Anatomical Substrate in Healthy Adults, Arrhythmogenic Cardiomyopathy, and Heart Failure
… was applied in combination with speckle tracking echocardiography (STE) to longitudinally image heart failure patients undergoing cardiac resynchronization therapy (CRT). STE is an echocardiographic technique for measuring strain (contraction) in the heart. CRT is a highly …
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An investigation into the mechanisms, consequences and moderators of intradialytic hypotension in paediatric haemodialysis
… (endocardial wall motion) and a novel method (Speckle tracking 2-dimensional strain) I then measured the regional left ventricular (LV) function in children (aged 2 to 17 years) at the start of dialysis and again during peak stress at the end of HD. I found rising cardiac troponin I levels in …
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Fetal Cardiac Function and Venous Circulation - Experiences with Velocity Vector Imaging
… and have shown promise. Using the novel speckle tracking technique Velocity Vector Imaging, strain, strain rate and velocity of the ventricular and atrial walls were measured in a cohort of 250 healthy fetuses and compared to results in a group of 38 fetuses with signs of impaired …
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Mechanical characterization of tissue-like materials using information based machine learning
… data, as well as ultrasound images. A speckle-tracking algorithm estimated motion of the phantoms within the imaged region. Force-displacement data and the Autoprogressive training algorithm was then used to build informational models describing the constitutive behavior of the gelatin …
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Dynamic evaluation of female pelvic floor muscle function using 2D ultrasound and image processing methods
… U.S.A. <br/><br/>Two methods of IPM were used; speckle tracking for measuring displacement of the ano-rectal angle (ARA) and symphysis pubis (SP); and segmentation IPM for measuring displacement of the urethra. Good to excellent inter and intra observer reliability was established for processing …
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Development and Validation of Non-Invasive Methods for the Identification of Patient-Specific Hyperelastic and Anisotropic Material Properties of Abdominal Aortic Aneurysms In Vivo
… 4D ultrasound (3D and time) combined with speckle tracking (4D US), enabling spatially and temporally resolved assessment of local wall deformations. The first study developed a method to improve the reliability of single ultrasound acquisitions, reflecting current clinical standards. A …
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The Heart of the Rugby Football League Athlete: An Aid to Pre-Participation Cardiac Screening
… with the application of TTE including novel speckle tracking echocardiography (STE). The aims of this thesis were 1) to establish left ventricular (LV) structural and functional indices of the senior RFL athlete using TTE and STE and a mathematical model of the structural-functional …
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Effect of the Pdgfbʳᵉᵗ mutation on cardiovascular homeostasis
… structure and function was performed using speckle tracking echocardiography (STE) in a combined male and female cohort of pdgfb+/+, pdgfbret/+ and pdgfbret/ret mice. Using STE, subtle changes to segmental systolic and diastolic cardiac strain were detected at 9 and 12 months of age in …
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La Metabolomica: una nuova era in Cardiologia. Le nostre esperienze originali nei campi dell' insufficienza cardiaca, della cardiopatia ischemica e dell' ipertensione polmonare
… (S) and Strain Rate (SR) values using Speakle Tracking Imaging. The three groups showed a progressive impairment of systolic function from Group A to Group C, with intermediate values in Group B. The application of Pattern-recognition methods to 1H-NMR spectra identified 3 metabolic clusters …