Search for dissertations about: "spectral CT"
Showing result 1 - 5 of 10 swedish dissertations containing the words spectral CT.
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1. Spectral Computed Tomography with a Photon-Counting Silicon-Strip Detector
Abstract : Computed tomography (CT) is a widely used medical imaging modality. By rotating an x-ray tube and an x-ray detector around the patient, a CT scanner is able to measure the x-ray transmission from all directions and form an image of the patient’s interior. READ MORE
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2. A Segmented Silicon Strip Detector for Photon-Counting Spectral Computed Tomography
Abstract : Spectral computed tomography with energy-resolving detectors has a potential to improve the detectability of images and correspondingly reduce the radiation dose to patients by extracting and properly using the energy information in the broad x-ray spectrum. A silicon photon-counting detector has been developed for spectral CT and it has successfully solved the problem of high photon flux in clinical CT applications by adopting the segmented detector structure and operating the detector in edge-on geometry. READ MORE
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3. Spectral Photon-Counting Computed Tomography with Silicon Detectors: New Models and Applications
Abstract : X-ray computed tomography (CT) is a widely used imaging modality that enables visualization of nearly every part of the human body. It is used for diagnosis of disease and injury as well as medical treatment planning. READ MORE
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4. An Event-Reconstructing Silicon Detector for 1 µm Resolution Spectral Computed Tomography
Abstract : Computed tomography (CT) is a medical imaging modality in which cross-sectional images of the human body are created using x-rays. Commercial CT scanners utilize energy-integrating detectors to measure the x-ray attenuation. However, photon-counting detectors with energy-discriminating abilities have started to emerge. READ MORE
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5. Characterization and Optimization of Silicon-strip Detectors for Mammography and Computed Tomography
Abstract : The goal in medical x-ray imaging is to obtain the image quality requiredfor a given detection task, while ensuring that the patient dose is kept as lowas reasonably achievable. The two most common strategies for dose reductionare: optimizing incident x-ray beams and utilizing energy informationof transmitted beams with new detector techniques (spectral imaging). READ MORE