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 11 of 11 for “"Radiation imaging"”.
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System-on-chip-based radiation imaging system with pulse shape discrimination capability
Compact scintillator array-based radiation imaging systems, capable of source characterization and localization of radioactive materials for nuclear security, safeguards, and non-proliferation applications, remain an unexplored technology as several technological challenges have prevented their …
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Observations of variability of TeV gamma-ray blazars
… very-high-energy photons. The Very Energetic Radiation Imaging Telescope Array System (VERITAS) is an array of four 12-m imaging Cherenkov telescopes that is sensitive to gamma rays in the energy range between ~100 GeV and ~30 TeV.
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A photon counting pixel detector for x-ray imaging
… in this thesis as an alternative to current imaging systems in medical imaging and synchrotron radiation applications. The technology has been developed from research performed in High Energy Physics, in particular, for the ATLAS experiment at the LHC, planned for 2005. This thesis describes …
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Study of propagation and detection methods of terahertz radiation for spectroscopy and imaging
… 1012 cycles per second or 300 pm in wavelength) radiation are rapidly expanding. In particular, THz imaging is emerging as a powerful technique to spatially map a wide variety of objects with spectral features which are present for many materials in THz region. Objects buried within dielectric …
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Complexation of trivalent lanthanides by three diphosphonate ligands in the blood plasma
… study three diphosphonate ligands applied in radiation imaging of bone or nonradiative treatment of osteoporosis were chosen. They are APD (1-hydroxy-3-aminopropylidene- diphosphonic acid), MDP (methylenediphosphonic acid) and HEDP (1- hydroxy-ethylene-diphosphonic acid). Formation constants …
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A Dark Matter line search using 3D-modeling of Cherenkov showers below 10 TeV with VERITAS
… focused on the latter method. The Very Energetic Radiation Imaging Telescope Array System, V ERITAS, is a telescope array that detects Cherenkov radiation. Theory predicts that DM particles annihilate into, e.g., a γγ pair and create a distinctive energy spectrum when detected by such telescopes, …
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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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Developing a Microbubble-based Contrast Agent for X-ray Phase Contrast Imaging to Detect Neovasculature in Breast Cancer
X-ray phase contrast imaging (XPC) generates contrast from refraction and scattering of X-rays, unlike absorption in conventional radiology. This technique greatly improves the sharpness of boundaries and reveals micro-structured tissues that are not easily detected by conventional absorption-based …
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Applications of machine learning in nuclear imaging and radiation detection
… two problem areas are discussed: nuclear imaging and radiation detection. The techniques to approach these problems are primarily based on a variant of Artificial Neural Network (ANN) called Convolutional Neural Network (CNN), which is one of the most popular forms of 'deep learning' …
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The search for dark matter annihilation in galaxy clusters at VERITAS
<p>Recent data and cosmological models point to a significant fraction of the Universe being comprised of Cold Dark Matter (DM), though little is known about it directly as it does not interact electromagnetically. The most likely explanation for DM is a Weakly Interacting Massive Particle (WIMP) …
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Development of New Radiolabeling Methods and Insights on Ionizing Radiation Interactions with Nanoparticles
… applications, ranging from waste remediation to imaging and therapy in the medical field. The overarching aim of this body of work is two-fold. The first aim is development of new radiolabeling methods for various nanoparticles that allow stable attachment of a variety of imaging and therapeutic …