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 8 of 8 for “"depth-of-interaction"”.
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Design, Calibration, and Evaluation of Depth-of-Interaction-Capable Pet Detector Modules
… small-bore PET systems suffer from a tradeoff between system sensitivity, and image quality degradation. In these systems long crystals allow mispositioning of the line of response due to parallax error and this mispositioning causes resolution blurring, but long crystals are necessary for …
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Evaluation of room-temperature semiconductor detectors for ultrahigh resolution pet imaging
The evaluation of a room-temperature semiconductor detector for ultrahigh resolution positron emission tomography (PET) imaging is presented. The approach is based on the use of a CdTe semiconductor detector. The detector is a 2mm thick cadmium telluride (CdTe) detector with a pixel pitch of 350μm …
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System-on-chip-based radiation imaging system with pulse shape discrimination capability
… 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 adoption. These …
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Hybrid pixel-waveform semiconductor detectors: novel detector readout for semiconductor pet imaging of small animal neurodegenerative models
… intellectual challenge: the engineering of the instrument cannot occur without mastery knowledge of its governing principles while a lack of clear understanding of the application provides an uncertain instrument performance requirement. Therefore, this work lays the contextual importance …
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Design study of a two-panel head-and-neck cancer dedicated position emission tomography system
… and neck cancer (HNC) is collectively a group of cancers that usually begin in mucosal surfaces inside the head and neck. Due to the complex anatomy and vital physiological role of the tumor-involved regions, the goal of HNC treatment is not only to improve survival outcomes but also to …
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Towards simultaneous single emission microscopy and magnetic resonance imaging
… in vivo. In this dissertation, the development of an ultrahigh resolution MR-compatible SPECT (Single Photon Emission Computed Tomography) system that can be operated inside a pre-existing clinical MR scanner for simultaneous dual-modality imaging of small animals will be discussed. This system …
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Exploring how school intra-organizational mechanisms mediate the effects of external interventions on improving teaching and learning
… mechanism may mediate the impact of external interventions on improving teaching and learning. This first study examines how high-quality professional development (PD) can promote the diffusion of effective teaching strategies among teachers through collaboration. Drawing on …
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Design study of an organ-dedicated positron emission tomography system
… its low spatial resolution limits the management of cancers in specific organs or regions. To promote the pre-clinical and clinical research and improve the diagnosis accuracy and treatment out- comes, organ-dedicated PET systems, such as brain-dedicated scanners, or breast-dedicated scanners, …