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 17 of 17 for “"Chest CT"”.
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Measurement and Applicants of Incidental Coronary Calcium on Chest CT Scans
… general metadata -- e.g., title, author, abstract, subject headings, etc. -- is publicly available, but access to the submitted files is restricted to UT Southwestern campus access and/or authorized UT Southwestern users.
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Segmentation and Quantification of Airways and Blood Vessels in Chest CT
Contains fulltext : 178922.pdf (Publisher’s version ) (Open Access)
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Feasibility Study of Low Dose Chest CT for Initial Evaluation of Blunt Chest Trauma Patient
INTRODUCTION: Multi-detector computed tomography (MDCT) is now modality of choice for evaluation of the polytrauma patients including thoracic injury. However, the routine use of CT results in rapid increase of the CT radiation dose in blunt chest trauma evaluation. Therefore, according to the …
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Emphysema Quantification using Low Dose Chest CT : Efficacy of Follow up Examinations in Asymptomatic Smokers
Pulmonary function test (PFT), plain chest radiography and computed tomography(CT) of chest are commonly used for the diagnosis of emphysema. It is important to diagnose emphysema. However, it is more important to evaluate the degree of extent and progression of emphysema, because they are related …
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Widened mediastinum on chest radiography as a prompt for further imaging in suspected blunt traumatic aortic injury: 3-year experience at a major trauma centre
… the presence of a widened mediastinum on a chest radiograph (CXR) as the commonest indication for chest computed tomography (CT) in cases of suspected blunt traumatic aortic injury (BTAI). Evaluating the practical implementation and accuracy of this tool could improve the degree of …
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Real-Time Computed Tomography-based Medical Diagnosis Using Deep Learning
… cancer risk is associated with high X-ray dose CT scans, limiting its applicability in medical diagnosis and telemedicine applications. CT scans acquired at low X-ray dose generate low-quality images with noise and streaking artifacts. Therefore we develop a deep learning-based CT image …
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Is Observation for Traumatic Hemothorax Safe?
… We sought to 1) determine the safety of selective observation for traumatic hemothorax, and 2) identify predictors of failed observation. Methods: All patients with traumatic hemothorax from 2000-2014 at a Level I Trauma Center were identified and categorized by size as small (<300cc) or …
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Eosinophilic Asthma Response to Therapy: 129Xe Magnetic Resonance Imaging and Computed Tomography
… this therapy results in disease modifying activity, specifically in the asthmatic airways and pulmonary vasculature, is still poorly understood. Pulmonary structure and function may be evaluated using computed tomography (CT) and hyperpolarized noble gas magnetic resonance imaging (MRI), …
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Tomosynthesis in pulmonary cystic fibrosis
… aims of this thesis were to investigate whether chest tomosynthesis might be used in pulmonary cystic fibrosis, to design and validate a tomosynthesis scoring system, and to determine the effective dose from chest tomosynthesis in children. In a prospective study starting in 2008 clinical chest …
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Deficiência de arginina-vasopressina (diabetes insipidus central) como primeira manifestação de histiocitose de células de Langerhans: relato de caso
Introduction: Langerhans cell histiocytosis (LCH) is a rare clonal neoplasm of the mononuclear phagocyte system characterized by proliferation of CD1a⁺/Langerin⁺ myeloid dendritic cells and activating mutations in the MAPK/ERK pathway (such as BRAF V600E and MAP2K1). Involvement of the …
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Experimentelle Untersuchung zum Einfluss der Dosisreduktion auf die CT-Bildqualität : Rundherddiagnostik bei Schweinelungen
… insbe-sondere seit Einführung der Mehrschicht-CT, eine herausragende Rolle. Dabei er-weist sich jedoch nach wie vor die Strahlenexposition als limitierender Faktor. Dies ist vor allem bei Kindern und Jugendlichen zu berücksichtigen. Daher kam die Prä-misse auf, Aufnahmen mit möglichst geringer …
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Missed Breast Cancer Risk Factors and Clinicopathologic Features: A Six-Year Analysis of Data from a Single Institution
… been consistently decreasing due to the introduction of screening mammography and continual innovations in treatment [1,13,15]. However, cancers missed on screening and diagnostic imaging studies impede further reductions in mortality, necessitating scrutiny of common themes in these cases. …
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Deep learning approach to discontinuity-preserving image registration
… using regularizers to impose smoothness restrictions on unknown deformation fields. The majority of these methods assume global smoothness in the image domain, which pose issues for scenarios where motion discontinuities exist. Examples where local motion discontinuities happen are the sliding …
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A Phantom Study for Attenuation Change and Detection of Calcification in Lung Nodules According to Variation of Examination Techniques in Low Dose CT
… tube voltage and current setting in low-dose CT comparing with standard-dose CT. Material and Methods : A chest phantom containing artificial nodules was scanned with 64-detector-row and 128-detector-row CT scanners using a standard and various low-dose settings with iterative reconstruction. …
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Deep neural networks for medical image super-resolution
… deep neural networks has ensured high reconstruction fidelity and photo-realistic super-resolution image generation. However, challenges still exist in the medical domain, requiring novel network architectures, training tricks, and SR image evaluation techniques. This dissertation concentrates …
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Examination of the Molecular Epidemiology, Expansion, Population Structure, and Virulence of the Emerging Fungal Pathogen,<italic>Cryptococcus gattii</italic> in the United States
<p><italic>Cryptococcus gattii</italic> has been actively emerging and adapting to the climates and environment in western North America, bringing with it life-threatening disease to humans and animals. Through systematic investigations of the dynamics of this pathogen in the United States, by …