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 18 of 18 for “"Computed Tomography Imaging"”.
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Three-Dimensional Photoacoustic Computed Tomography: Imaging Models and Reconstruction Algorithms
<p>Photoacoustic computed tomography: PACT), also known as optoacoustic tomography, is a rapidly emerging imaging modality that holds great promise for a wide range of biomedical imaging applications. Much effort has been devoted to the investigation of imaging physics and the optimization of …
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A tri-modality x-ray fluorescence, x-ray luminescence, x-ray transmission computed tomography imaging platform for monitoring and stimulating metal-containing nanoparticles
… X-ray fluorescence (XFCT) and X-ray luminescence computed tomography (XLCT) to monitor the therapeutic delivery during radiation therapy. X-ray Raleigh scattering (XRS) produced by the scattered monochromatic incident X-ray can also be correlated with the data from XFCT/XLCT while X-ray …
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Immobilization and Catheter Guidance for Breast Brachytherapy Using Patient-Specific Templates
… placement accuracy, integration of pre-operative imaging, supplemented by computerized surgical planning and mathematical optimization were used to develop and test an intra-operative immobilization and catheter guidance system. A custom-template specific to each patient with optimally-placed …
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4D Study of Thoracic Cancer Radiation Treatment
… accomplish this goal. The application of 4D CT imaging to radiotherapy treatment planning is an active area of research with the goal to reduce the required normal tissue irradiation and improve the tumor coverage. Deformable image registration holds the key to link the information of two images …
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A Computational Model of Inert Gas Mixing in the Lung
… markers or contrast agents in experimental and imaging methods that measure lung function. The premise is that by analysing the expired concentrations of inert gas, or by quantifying their distribution from \textit{in vivo} imaging, information can be gained about the ventilatory function of the …
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In vitro Investigation of Carpal Tunnel Volume and Morphology Changes with Non-Neutral Wrist Postures
… Analysis was performed in vitro using computed tomography imaging of cadaveric upper-extremities positioned in flexion-extension (FE) and radial-ulnar deviation (RUD) postures using a custom active joint motion simulator.This thesis presents four studies of the carpal tunnel. The first …
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Establishing a Model of Organ regeneration in the Adult Mammal: Age Dependence and the Utility of Non-Invasive Imaging
… and the prognostic value of non-invasive imaging were evaluated. Removal of a large portion of the urinary bladder (subtotal cystectomy; STC) in adult rats initiated a proliferative response that gave rise to normal bladder wall architecture, including nerves, vessels, urothelium, and …
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Characterization of Rheumatoid Arthritis-Specific Immune Responses and Evaluation of a Novel Peptide Immunotherapy in the Collagen Induced Arthritis Mouse Model
… testing), and osteopenia (measured by micro-computed tomography imaging and bone mineral density analysis). Arthritic mice developed elevated splenic T cell proliferative responses to HomoCitP, but not CitP, which strongly correlated with joint swelling, pain, and histopathological damage. …
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Development of correction algorithm for pulsed terahertz computed tomography (THz-CT)
… in Terahertz (THz) science, technology, and imaging. In particular, the technique of 3-D computed tomography has been adapted to the THz range. However, it has been widely recognized that a fundamental limitation to THz computed tomography imaging is the refractive effects of the sample under …
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Contusion Progression in Traumatic Brain Injury
… TBI patients, characterise BBB permeability with computed tomography imaging, and identify key mediators of this process using intracerebral microdialysis. • Study I: A robust and effective stereological method for measuring the volume of brain lesions was validated and applied to a cohort of TBI …
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The Design, Synthesis and Characterization of Lanthanide-based Nanomaterials and Their Use in 3D Biological Imaging and Radiation Dosimetry
… (UCNPs) (2) the development of a 3D imaging modalities that leverage the unique photophysical properties of upconverting nanomaterials and (3) the application of scintillating nanoscale radiation detection materials as an alternative to the single-crystal bulk lanthanide doped …
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Enhancing the Biodistribution and Physicochemical Properties of Gold Nanoparticles by Modifying their Surface Characteristics
L'abstract è presente nell'allegato / the abstract is in the attachment
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The Effect of Scan Settings on the Identification of Tooth Socket Lamina Dura Surface: A CBCT Study
<p>Aim: Cone-beam computed tomography (CBCT) is becoming a common adjunct in orthodontic diagnosis and treatment, however several questions remain about the impact of surrounding anatomical structures and varying scan settings on the ability to delineate buccal bone and overall diagnostic quality …
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The Effect of Tooth Presence on Identification of Tooth Socket Lamina Dura Surface: A CBCT Study
<p>Aim: The accuracy in identifying anatomical landmarks on CBCT images can be affected by the presence of surrounding anatomical structures with similar radiodensity. The purpose of this study was to evaluate the effect of the presence of tooth structure on the accuracy in identifying the lamina …
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Development of a Three-Dimensional Image-Guided Needle Positioning System for Small Animal Interventions
… animal needle positioning system guided by micro-computed tomography (micro-CT) imaging was developed. A phantom was developed to calibrate the geometric accuracy of micro-CT scanners to a traceable standard of measurement. Use of the phantom ensures the geometric fidelity of micro-CT images for …
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Development and Application of Computational Tools for the Study and Optimization of Variable Resolution X-ray (VRX) Computed Tomography Scanners
… analysis and evaluation of some aspects of VRX imaging. This included a comparison of the performance of different targeting VRX geometries in terms of spatial and contrast resolution, and a study of the effect of the VRX angle on the severity of common artifacts in single-arm images.</p>