Essays about: "Spektral CT"
Found 5 essays containing the words Spektral CT.
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1. Improving proton therapy planning with photon-counting spectral computed tomography
University essay from KTH/FysikAbstract : Proton radiation therapy is an alternative to conventional photon radiation therapy, which accounts for the majority of radiation treatments today. The rationale for using protons in radiation therapy lies in their dose deposition properties; photons deposit a radiation dose inversely proportional to the energy, and therefore tissue depth, while protons exhibit a sharp Bragg peak when traversing matter. READ MORE
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2. Deep Ring Artifact Reduction in Photon-Counting CT
University essay from KTH/FysikAbstract : Ring artifacts are a common problem with the use of photon-counting detectors and commercial deployment rests on being able to compensate for them. Deep learning has been proposed as a candidate for tackling the inefficiency or high cost of traditional techniques. READ MORE
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3. Neural Networks for Material Decomposition in Photon-Counting Spectral CT
University essay from KTH/Medicinteknik och hälsosystemAbstract : Photon counting computed tomography scanners constitute a major improvement of the field of computed tomography, opening various prospective and enabling the decomposition of computed tomography images into different materials. The material decomposition algorithm, mapping photon counts to material pathlengths, relies on a forward model with Poisson statistics. READ MORE
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4. Learning the Forward Operator in Photon-Counting Computed Tomography
University essay from KTH/Matematik (Avd.)Abstract : Computed Tomography (CT) is a non-invasive x-ray imaging method capable of reconstructing highly detailed cross-sectional interior maps of an object. CT is used in a range of medical applications such as detection of skeletal fractures, organ trauma and artery calcification. READ MORE
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5. Event-based High Resolution X-ray Imaging using Compton Coincidence Detection
University essay from KTH/Medicinsk avbildningAbstract : Research on photon counting detectors (PCDs) is focused on semiconductor materials, and silicon is a strong candidate to use in PCDs for photon counting computer tomography (CT). In a silicon detector, a significant portion of the counts is due to Compton scattering events. READ MORE