Essays about: "x-ray tomography"

Showing result 11 - 15 of 77 essays containing the words x-ray tomography.

1. 11. Beyond Traditional Tomography: X-ray Multi-projection Imaging for Additive Manufacturing

   University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Author : Maria Esther Vilar Alvarez; [2023]
   Keywords : X-ray tomography; X-ray multiprojection-imaging; deep learning; additive manufacturing; synchrotron radiation; Physics and Astronomy;

   Abstract : The main aim of this bachelor thesis is to push the limits of 3D X-ray imaging by studying the minimum number of projections required to retrieve high-quality reconstructions for additive manufacturing processes. This project first focuses on understanding how X-ray tomography works, by reconstructing additive manufacturing data already obtained (from PSI, TOMCAT beamline) using two standard reconstruction algorithms, GRIDREC and SIRT. READ MORE

3. 12. Water-based Synthesis of Superparamagnetic X-ray Fluorescent Contrast Agents

   University essay from KTH/Tillämpad fysik

   Author : Daniel Cortés García; [2022]
   Keywords : Nanoparticles; SPIONs; XFCT; co-precipitation.; Nanopartiklar; SPIONs; XFCT; samfällning;

   Abstract : Nowadays, nanomedicine is one of the most important application areas fornanoparticles (NPs), where the design and synthesis of new hybrid nanostructures have attracted much interest, when combining properties and functionalities from different constituents. For example, they have been extensivelyused for dual-mode imaging. READ MORE

4. 13. Optimization of an advanced algorithm for bone imaging

   University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

   Author : Adam Mrozek; [2022]
   Keywords : osteoporosis; optimization; programming; engineering; X-ray; bone; mineral density; speed; faster; projection; MATLAB; C ; Technology and Engineering;

   Abstract : Fracture risk in osteoporosis is increased and osteoporosis is the most common metabolic bone disease and treatment is expensive. Osteoporosis is diagnosed by measuring Bone Mineral Density (BMD), which does not consider other factors such as bone geometry or architecture. READ MORE

5. 14. Phase-Contrast Imaging, Towards G2-less Grating Interferometry With Deep Silicon

   University essay from KTH/Fysik

   Author : Rickard Brunskog; [2022]
   Keywords : Phase-contrast imaging; phase-contrast; CT-scanning; Computed-tomography; 1 micrometer resolution x-ray; grating-less phase-contrast imaging; Faskontraströntgen; faskontrast; CT-skanning; 1 mikrometer upplösning x-ray; gitterlös faskontrast; datortomografi;

   Abstract : Conventional phase-contrast imaging entails stepping an analyser grating across the detector to resolve the interference pattern caused by the x-rays after passing through a series of gratings in a so-called Talbot-Lau interferometer. However, the analyser grating in the interferometer poses a challenge, not only due to the machinery and alignment required but also due to each exposure delivering a dose to the subject. READ MORE

6. 15. Mapping of Material & Conversion Parameters of Packaging Production – Boardio®

   University essay from Lunds universitet/Kemiteknik (CI)

   Author : Yusuf Qasem; Younes Chraibi Ottosson; [2022]
   Keywords : Chemical Engineering; Packaging; Packaging Production; Paperboard; Converting; Lamination; Extrusion; Die-cutting; X-ray tomography; GPI; Creasing; Perforation; Tensile Strength; Technology and Engineering;

   Abstract : With an increased demand for sustainable packaging solutions for the ever-growing FMCG market, fiber-based systems rise as an answer to phasing out plastics in packages and reducing the humanity’s climate footprint. However, constructing a packaging solution largely consisting of paperboard comes with its challenges, such as integrating functionalities in the anisotropic paperboard that formerly were provided by a fundamentally different materials with divergent mechanical properties, being isotropic polymers. READ MORE