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.
Results
Showing 1 to 20 of 9631 for “"Imaging"”.
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Imaging Glioblastoma metabolism using mass spectrometry imaging
… Using isotope tracing and mass spectrometry imaging (MSI), I identified three metabolic signatures in patient GB tumours: glycolytic, oxidative and a mixed glycolytic/oxidative phenotype. These phenotypes do not correlate with microenvironmental characteristics such as proliferation rate, …
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Fast Magnetic Resonance Imaging by Data Sharing: Generalized Series Imaging and Parallel Imaging
… and image reconstruction in data-sharing imaging. Specifically, two imaging techniques based on a generalized series (GS) model and a parallel data acquisition strategy are developed to improve imaging speed with a minimal concomitant loss of image quality. First, a new GS imaging method …
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Null subtraction imaging technique for biomedical ultrasound imaging
In ultrasonic imaging, reduction of lateral sidelobes results in an improved image with less distortion and fewer artifacts. In general, apodization is used to lower sidelobes in exchange for increasing the width of the mainlobe and thus decreasing lateral resolution. Null subtraction imaging (NSI) …
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Phonon imaging
… thesis describes the development of the phonon imaging method. This technique permits the direct measurement of the angular and temporal distribution of phonons emitted from a point source of heat in insulators at low temperatures. It is a derivative of the ballistic heat pulse method, but one …
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Personal imaging
… embodiment of this invention, called Personal Imaging, most notably, a system which I show attains new levels of creativity in photography, defines a new genre of documentary video, and goes beyond digital photography/video to define a new renaissance in imaging, based on simple principles of …
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DEVLOPEMNT OF FLUORESCENT IMAGING TOOLS FOR LIVE CELL IMAGING
… behaviors in real time. Fluorescent live cell imaging presents an appealing approach to learn about cell dynamics and function by providing specificity and high resolution. However, one of the biggest limitations of these imaging modalities is penetration depth. With advancements in studying …
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Imaging of mice and men; adventures in multispectral imaging
… we investigate the application of multispectral imaging in early stage prion disease. By analysis of the protein conformation sensitivity of the mid infrared spectra (with particular interest in the Amide I band) we seek to identify structurally relevant markers in a mouse model before clinical …
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Clinically relevant magnetic resonance imaging and spectroscopic imaging development
… of this thesis, a single slab 3D fast spin echo imaging (3DFSE) method has been implemented and optimized. This involved sequence design and implementation, SAR considerations, parameter adjustments and clinical testing. The method can deliver 3D Tl or T2 weighted brain image with isotropic Imm3 …
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Imaging The Vasculature With Susceptibility Weighted Imaging: Applications And Analysis
<p>Modern magnetic resonance imaging sequences allow detailed non-invasive imaging of both the arteries and veins. This work is divided into four sections that examine different applications and analysis of these sequences.</p> <p>Susceptibility weighted imaging (SWI) typically generates excellent …
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Full Mueller imaging: direction dependent corrections in polarimetric radio imaging
Magnetic fields pervade the universe, spanning a multitude of scales from the dipolar field on Earth, to the largest gravitationally bound structures such as galaxy clusters [1]. The magnetic fields play a vital role in the evolution of these astronomical systems. In addition to the multitude of …
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Imaging Neuromuscular Synaptogenesis
… Here, using whole-mount high-resolution live imaging, we show that glutamatergic synaptogenesis on all muscles in Drosophila embryos is preceded by formation of a myopodial cluster into which PSD-95/Dlg is rapidly recruited. Cell-specific disruption of myopodial clustering affect …
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Electric field imaging
… This thesis introduces Electric Field Imaging, a new physical channel and inference framework for machine perception of human action. Though electric field sensing is an important sensory modality for several species of fish, it has not been seriously explored as a channel for machine …
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Spatiotemporal brain imaging
… develops and applies a spatiotemporal neuroimaging method. I describe a linear estimation inverse approach, which is a method for the combination of functional magnetic resonance imaging (fMRI) with electroencephalography (EEG) and magnetoencephalography (MEG). fMRI provides millimeter …
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Imaging through scattering
… in particular for biomedical applications. Imaging through scattering media has long been a challenge, as scattering corrupts scenes in a non-invertible way. The use of near-visible optical spectrum for biomedical purposes has many advantages, such as optical contrast, optical resolution and …
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Femtosecond Transient Imaging
… proposes a novel framework called transient imaging for image formation and scene understanding through impulse illumination and time images. Using time-of-flight cameras and multi-path analysis of global light transport, we pioneer new algorithms and systems for scene understanding through …
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Quantum-mimetic imaging
… use of nonclassical states of light to perform imaging or sensing. Although these experiments require quantum descriptions of light to explain their behavior, the advantages they claim are not necessarily unique to quantum light. This thesis explores the underlying principles behind two of those …
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A High-Resolution Microscopic Electrical Impedance Imaging Modality: Scanning Impedance Imaging
Electrical impedance imaging is an imaging technique which has the capability of revealing the spatial distribution of the electrical impedance inside biological tissues. Classical electrical impedance imaging including Electrical Impedance Tomography (EIT) typically has low resolution. Advances in …
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Quantitative phase imaging: advances to 3D imaging and applications to neuroscience
… provides a brief overview of quantitative phase imaging (QPI) methods along with applications and advances made on them. First, spatial light interference microscopy (SLIM) is introduced as a QPI method extensively used in this thesis. Using this setup, an application of QPI in neuroscience is …
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